Serde

https://docs.rs/serde/latest
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Serde is a framework for serializing and deserializing Rust data structures efficiently and...
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### Implement Serialize for u64

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Example implementation of the Serialize trait for u64.

```rust
impl Serialize for u64 {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.serialize_u64(*self)
    }
}
```

--------------------------------

### Implement custom deserialization logic

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=

Example of implementing the deserialize method for a type, parsing a string from the deserializer.

```rust
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
    where
        D: Deserializer<'de>,
    {
        let s = String::deserialize(deserializer)?;
        s.parse().map_err(de::Error::custom)
    }
}
```

--------------------------------

### Implement Serialize for u32

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Example implementation of the Serialize trait for u32, with a suggestion to forward to serialize_u64 if the format does not differentiate.

```rust
impl Serialize for u32 {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.serialize_u32(*self)
    }
}
```

--------------------------------

### Implement Serialize for Unit Struct

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Example of implementing Serialize for a unit struct using serialize_unit_struct.

```rust
use serde::{Serialize, Serializer};

struct Nothing;

impl Serialize for Nothing {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.serialize_unit_struct("Nothing")
    }
}
```

--------------------------------

### Implement custom deserialization logic

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=std%3A%3Avec

Example of implementing the deserialize method for a custom type using Serde's Deserializer.

```rust
    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
    where
        D: Deserializer<'de>,
    {
        let s = String::deserialize(deserializer)?;
        s.parse().map_err(de::Error::custom)
    }
}
```

--------------------------------

### Serialize tuples with Serde

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Examples of serializing fixed-size tuples and array-based structures using serialize_tuple.

```rust
use serde::ser::{Serialize, SerializeTuple, Serializer};

# mod fool {
#     trait Serialize {}
impl<A, B, C> Serialize for (A, B, C)
#     {}
# }
#
# struct Tuple3<A, B, C>(A, B, C);
#
# impl<A, B, C> Serialize for Tuple3<A, B, C>
where
    A: Serialize,
    B: Serialize,
    C: Serialize,
{
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        let mut tup = serializer.serialize_tuple(3)?;
        tup.serialize_element(&self.0)?;
        tup.serialize_element(&self.1)?;
        tup.serialize_element(&self.2)?;
        tup.end()
    }
}
```

```rust
use serde::ser::{Serialize, SerializeTuple, Serializer};

const VRAM_SIZE: usize = 386;
struct Vram([u16; VRAM_SIZE]);

impl Serialize for Vram {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        let mut seq = serializer.serialize_tuple(VRAM_SIZE)?;
        for element in &self.0[..] {
            seq.serialize_element(element)?;
        }
        seq.end()
    }
}
```

--------------------------------

### Implement Serialize for f64

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html

Example implementation of the Serialize trait for f64 using the Serializer trait.

```rust
# use serde::Serializer;
#
# serde_core::__private_serialize!();
#
impl Serialize for f64 {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.serialize_f64(*self)
    }
}
```

--------------------------------

### Implement Deserialize for i128

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

The start of an i128 Deserialize implementation using a custom Visitor.

```rust
impl<'de> Deserialize<'de> for i128 {
            #[inline]
            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
                D: Deserializer<'de> {
                struct PrimitiveVisitor;
                impl<'de> Visitor<'de> for PrimitiveVisitor {
                    type Value = i128;
```

--------------------------------

### Implement Serialize for u16

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Example implementation of the Serialize trait for u16, with a suggestion to forward to serialize_u64 if the format does not differentiate.

```rust
impl Serialize for u16 {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.serialize_u16(*self)
    }
}
```

--------------------------------

### Implement Serialize for u8

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Example implementation of the Serialize trait for u8, with a suggestion to forward to serialize_u64 if the format does not differentiate.

```rust
impl Serialize for u8 {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.serialize_u8(*self)
    }
}
```

--------------------------------

### Implement SeqAccess next_element and size_hint

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Default implementation for next_element and size_hint in SeqAccess.

```rust
        T: DeserializeSeed<'de>;
        /// This returns `Ok(Some(value))` for the next value in the sequence, or
        /// `Ok(None)` if there are no more remaining items.
        ///
        /// This method exists as a convenience for `Deserialize` implementations.
        /// `SeqAccess` implementations should not override the default behavior.
        #[inline]
        fn next_element<T>(&mut self) -> Result<Option<T>, Self::Error> where
            T: Deserialize<'de> {
            self.next_element_seed(PhantomData)
        }
        /// Returns the number of elements remaining in the sequence, if known.
        #[inline]
        fn size_hint(&self) -> Option<usize> { None }
    }
```

--------------------------------

### Implement Deserialize Trait

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=std%3A%3Avec

Example of implementing the Deserialize trait for a custom type.

```rust
use serde::de::{self, Deserialize, Deserializer};

                impl<'de> Deserialize<'de> for IpAddr {
```

--------------------------------

### Implement Serde Visitor Integer Methods

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Methods for visiting unsigned and signed integers, including bounds checking and error reporting for invalid values.

```rust
formatter.write_str("u32")
                    }
                    #[inline]
                    fn visit_u32<E>(self, v: u32) -> Result<Self::Value, E>
                        where E: Error {
                        Ok(v)
                    }
                    #[inline]
                    fn visit_u8<E>(self, v: u8) -> Result<Self::Value, E> where
                        E: Error {
                        Ok(v as Self::Value)
                    }
                    #[inline]
                    fn visit_u16<E>(self, v: u16) -> Result<Self::Value, E>
                        where E: Error {
                        Ok(v as Self::Value)
                    }
                    #[inline]
                    fn visit_i8<E>(self, v: i8) -> Result<Self::Value, E> where
                        E: Error {
                        if 0 <= v {

                            #[allow(irrefutable_let_patterns)]
                            if let Ok(v) = Self::Value::try_from(v as u64) {
                                return Ok(v as Self::Value);
                            }
                        }
                        Err(Error::invalid_value(Unexpected::Signed(v as i64),
                                &self))
                    }
                    #[inline]
                    fn visit_i16<E>(self, v: i16) -> Result<Self::Value, E>
                        where E: Error {
                        if 0 <= v {

                            #[allow(irrefutable_let_patterns)]
                            if let Ok(v) = Self::Value::try_from(v as u64) {
                                return Ok(v as Self::Value);
                            }
                        }
                        Err(Error::invalid_value(Unexpected::Signed(v as i64),
                                &self))
                    }
                    #[inline]
                    fn visit_i32<E>(self, v: i32) -> Result<Self::Value, E>
                        where E: Error {
                        if 0 <= v {

                            #[allow(irrefutable_let_patterns)]
                            if let Ok(v) = Self::Value::try_from(v as u64) {
                                return Ok(v as Self::Value);
                            }
                        }
                        Err(Error::invalid_value(Unexpected::Signed(v as i64),
                                &self))
                    }
                    #[inline]
                    fn visit_i64<E>(self, v: i64) -> Result<Self::Value, E>
                        where E: Error {
                        if 0 <= v {
```

--------------------------------

### Implement visit_i32 for Serde Visitor

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Handles i32 input by checking for non-negative values and attempting a safe conversion.

```rust
                    #[inline]
                    fn visit_i32<E>(self, v: i32) -> Result<Self::Value, E>
                        where E: Error {
                        if 0 <= v {

                            #[allow(irrefutable_let_patterns)]
                            if let Ok(v) = Self::Value::try_from(v as u64) {
                                return Ok(v as Self::Value);
                            }
                        }
                        Err(Error::invalid_value(Unexpected::Signed(v as i64),
                                &self))
                    }
```

--------------------------------

### Invoke FlattenedVecVisitor

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Example usage of the FlattenedVecVisitor to deserialize a sequence into a flattened vector.

```rust
let visitor = FlattenedVecVisitor(PhantomData);
let flattened: Vec<u64> = deserializer.deserialize_seq(visitor)?;
```

--------------------------------

### Implement visit_string for Visitor

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html

Handles string input where ownership is transferred to the visitor.

```rust
#[inline]
        #[doc(cfg(any(feature = "std", feature = "alloc")))]
        fn visit_string<E>(self, v: String) -> Result<Self::Value, E> where
            E: Error {
            self.visit_str(&v)
        }
```

--------------------------------

### SerializeTupleVariant Implementation Example

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=Option%3CT%3E%2C+%28T+-%3E+U%29+-%3E+Option%3CU%3E

Demonstrates implementing Serialize for an enum variant using SerializeTupleVariant.

```rust
use serde::ser::{Serialize, SerializeTupleVariant, Serializer};

    enum E {
        T(u8, u8),
        U(String, u32, u32),
    }

    impl Serialize for E {
        fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
        where
            S: Serializer,
        {
            match *self {
                E::T(ref a, ref b) => {
                    let mut tv = serializer.serialize_tuple_variant("E", 0, "T", 2)?;
                    tv.serialize_field(a)?;
                    tv.serialize_field(b)?;
                    tv.end()
                }
                E::U(ref a, ref b, ref c) => {
                    let mut tv = serializer.serialize_tuple_variant("E", 1, "U", 3)?;
                    tv.serialize_field(a)?;
                    tv.serialize_field(b)?;
                    tv.serialize_field(c)?;
                    tv.end()
                }
            }
        }
    }
```

--------------------------------

### Generic Deserialize Wrappers

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=std%3A%3Avec

Implementations for Reverse<T> and the start of OptionVisitor for deserializing generic types.

```rust
impl<'de, T: Deserialize<'de>> Deserialize<'de> for Reverse<T> {
            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
                D: Deserializer<'de> {
                Deserialize::deserialize(deserializer).map(Reverse)
            }
        }
        struct OptionVisitor<T> {
            marker: PhantomData<T>,
        }
        impl<'de, T> Visitor<'de> for OptionVisitor<T> where
            T: Deserialize<'de> {
            type Value = Option<T>;
            fn expecting(&self, formatter: &mut fmt::Formatter)
                -> fmt::Result {
                formatter.write_str("option")
            }
            #[inline]
            fn visit_unit<E>(self) -> Result<Self::Value, E> where E: Error {
                Ok(None)
            }
            #[inline]
            fn visit_none<E>(self) -> Result<Self::Value, E> where E: Error {
                Ok(None)
            }
            #[inline]
            fn visit_some<D>(self, deserializer: D)
```

--------------------------------

### Implement visit_u* methods for Visitor

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html

Handles unsigned integer inputs, with smaller types forwarding to visit_u64.

```rust
fn visit_u8<E>(self, v: u8) -> Result<Self::Value, E> where E: Error {
    self.visit_u64(v as u64)
}
```

```rust
fn visit_u16<E>(self, v: u16) -> Result<Self::Value, E> where
    E: Error {
    self.visit_u64(v as u64)
}
```

```rust
fn visit_u32<E>(self, v: u32) -> Result<Self::Value, E> where
    E: Error {
    self.visit_u64(v as u64)
}
```

```rust
fn visit_u64<E>(self, v: u64) -> Result<Self::Value, E> where
    E: Error {
    Err(Error::invalid_type(Unexpected::Unsigned(v), &self))
}
```

```rust
fn visit_u128<E>(self, v: u128) -> Result<Self::Value, E> where
    E: Error {
    let mut buf = [0u8; 57];
    let mut writer = crate::format::Buf::new(&mut buf);
    fmt::Write::write_fmt(&mut writer,
            format_args!("integer `{0}` as u128", v)).unwrap();
    Err(Error::invalid_type(Unexpected::Other(writer.as_str()),
            &self))
}
```

--------------------------------

### Implement visit_u32 and visit_u64 for PrimitiveVisitor

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

These methods handle unsigned 32-bit and 64-bit integer inputs by attempting to convert them into the target value type, returning an error if the conversion fails.

```rust
                    #[inline]
                    fn visit_u32<E>(self, v: u32) -> Result<Self::Value, E>
                        where E: Error {
                        Self::Value::try_from(v as
                                    u64).map_err(|_|
                                Error::invalid_value(Unexpected::Unsigned(v as u64), &self))
                    }
                    #[inline]
                    fn visit_u64<E>(self, v: u64) -> Result<Self::Value, E>
                        where E: Error {
                        Self::Value::try_from(v as
                                    u64).map_err(|_|
                                Error::invalid_value(Unexpected::Unsigned(v as u64), &self))
                    }
```

--------------------------------

### Implement Serialize for str

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html

Example implementation of the Serialize trait for str using the Serializer trait.

```rust
# use serde::Serializer;
#
# serde_core::__private_serialize!();
#
impl Serialize for str {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.serialize_str(self)
    }
}
```

--------------------------------

### Implement StringVisitor and StringInPlaceVisitor

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Provides visitors for standard String deserialization and in-place modification, along with the Deserialize implementation for String.

```rust
struct StringVisitor;
        struct StringInPlaceVisitor<'a>(&'a mut String);
        impl<'de> Visitor<'de> for StringVisitor {
            type Value = String;
            fn expecting(&self, formatter: &mut fmt::Formatter)
                -> fmt::Result {
                formatter.write_str("a string")
            }
            fn visit_str<E>(self, v: &str) -> Result<Self::Value, E> where
                E: Error {
                Ok(v.to_owned())
            }
            fn visit_string<E>(self, v: String) -> Result<Self::Value, E>
                where E: Error {
                Ok(v)
            }
            fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E> where
                E: Error {
                match str::from_utf8(v) {
                    Ok(s) => Ok(s.to_owned()),
                    Err(_) =>
                        Err(Error::invalid_value(Unexpected::Bytes(v), &self)),
                }
            }
            fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<Self::Value, E>
                where E: Error {
                match String::from_utf8(v) {
                    Ok(s) => Ok(s),
                    Err(e) =>
                        Err(Error::invalid_value(Unexpected::Bytes(&e.into_bytes()),
                                &self)),
                }
            }
        }
        impl<'a, 'de> Visitor<'de> for StringInPlaceVisitor<'a> {
            type Value = ();
            fn expecting(&self, formatter: &mut fmt::Formatter)
                -> fmt::Result {
                formatter.write_str("a string")
            }
            fn visit_str<E>(self, v: &str) -> Result<Self::Value, E> where
                E: Error {
                self.0.clear();
                self.0.push_str(v);
                Ok(())
            }
            fn visit_string<E>(self, v: String) -> Result<Self::Value, E>
                where E: Error {
                *self.0 = v;
                Ok(())
            }
            fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E> where
                E: Error {
                match str::from_utf8(v) {
                    Ok(s) => { self.0.clear(); self.0.push_str(s); Ok(()) }
                    Err(_) =>
                        Err(Error::invalid_value(Unexpected::Bytes(v), &self)),
                }
            }
            fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<Self::Value, E>
                where E: Error {
                match String::from_utf8(v) {
                    Ok(s) => { *self.0 = s; Ok(()) }
                    Err(e) =>
                        Err(Error::invalid_value(Unexpected::Bytes(&e.into_bytes()),
                                &self)),
                }
            }
        }
        #[doc(cfg(any(feature = "std", feature = "alloc")))]
        impl<'de> Deserialize<'de> for String {
            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
                D: Deserializer<'de> {
                deserializer.deserialize_string(StringVisitor)
            }
            fn deserialize_in_place<D>(deserializer: D, place: &mut Self)
                -> Result<(), D::Error> where D: Deserializer<'de> {
                deserializer.deserialize_string(StringInPlaceVisitor(place))
            }
        }
```

--------------------------------

### Implement Integer Visitation Methods

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=std%3A%3Avec

Methods for visiting unsigned and signed integers within a Serde Visitor implementation.

```rust
where E: Error {
                        Ok(v as Self::Value)
                    }
                    #[inline]
                    fn visit_u32<E>(self, v: u32) -> Result<Self::Value, E>
                        where E: Error {
                        Ok(v as Self::Value)
                    }
                    #[inline]
                    fn visit_i8<E>(self, v: i8) -> Result<Self::Value, E> where
                        E: Error {
                        if 0 <= v {

                            #[allow(irrefutable_let_patterns)]
                            if let Ok(v) = Self::Value::try_from(v as u64) {
                                return Ok(v as Self::Value);
                            }
                        }
                        Err(Error::invalid_value(Unexpected::Signed(v as i64),
                                &self))
                    }
                    #[inline]
                    fn visit_i16<E>(self, v: i16) -> Result<Self::Value, E>
                        where E: Error {
                        if 0 <= v {

                            #[allow(irrefutable_let_patterns)]
                            if let Ok(v) = Self::Value::try_from(v as u64) {
                                return Ok(v as Self::Value);
                            }
                        }
                        Err(Error::invalid_value(Unexpected::Signed(v as i64),
                                &self))
                    }
                    #[inline]
                    fn visit_i32<E>(self, v: i32) -> Result<Self::Value, E>
                        where E: Error {
                        if 0 <= v {

                            #[allow(irrefutable_let_patterns)]
                            if let Ok(v) = Self::Value::try_from(v as u64) {
                                return Ok(v as Self::Value);
                            }
                        }
                        Err(Error::invalid_value(Unexpected::Signed(v as i64),
                                &self))
                    }
                    #[inline]
                    fn visit_i64<E>(self, v: i64) -> Result<Self::Value, E>
                        where E: Error {
                        if 0 <= v {
```

--------------------------------

### Implement Serialize for char

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html

Example implementation of the Serialize trait for char using the Serializer trait.

```rust
# use serde::Serializer;
#
# serde_core::__private_serialize!();
#
impl Serialize for char {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.serialize_char(*self)
    }
}
```

--------------------------------

### Implement Path and PathBuf Deserialization

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Custom visitors for Path and PathBuf to handle string and byte inputs during deserialization.

```rust
impl<'a> Visitor<'a> for PathVisitor {
            type Value = &'a Path;
            fn expecting(&self, formatter: &mut fmt::Formatter)
                -> fmt::Result {
                formatter.write_str("a borrowed path")
            }
            fn visit_borrowed_str<E>(self, v: &'a str)
                -> Result<Self::Value, E> where E: Error {
                Ok(v.as_ref())
            }
            fn visit_borrowed_bytes<E>(self, v: &'a [u8])
                -> Result<Self::Value, E> where E: Error {
                str::from_utf8(v).map(AsRef::as_ref).map_err(|_|
                        Error::invalid_value(Unexpected::Bytes(v), &self))
            }
        }
        #[doc(cfg(feature = "std"))]
        impl<'de: 'a, 'a> Deserialize<'de> for &'a Path {
            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
                D: Deserializer<'de> {
                deserializer.deserialize_str(PathVisitor)
            }
        }
        struct PathBufVisitor;
        impl<'de> Visitor<'de> for PathBufVisitor {
            type Value = PathBuf;
            fn expecting(&self, formatter: &mut fmt::Formatter)
                -> fmt::Result {
                formatter.write_str("path string")
            }
            fn visit_str<E>(self, v: &str) -> Result<Self::Value, E> where
                E: Error {
                Ok(From::from(v))
            }
            fn visit_string<E>(self, v: String) -> Result<Self::Value, E>
                where E: Error {
                Ok(From::from(v))
            }
            fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E> where
                E: Error {
                str::from_utf8(v).map(From::from).map_err(|_|
                        Error::invalid_value(Unexpected::Bytes(v), &self))
            }
            fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<Self::Value, E>
                where E: Error {
                String::from_utf8(v).map(From::from).map_err(|e|
                        Error::invalid_value(Unexpected::Bytes(&e.into_bytes()),
                            &self))
            }
        }
        #[doc(cfg(feature = "std"))]
        impl<'de> Deserialize<'de> for PathBuf {
            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
                D: Deserializer<'de> {
                deserializer.deserialize_string(PathBufVisitor)
            }
        }
        #[doc(cfg(feature = "std"))]
        impl<'de> Deserialize<'de> for Box<Path> {
            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
                D: Deserializer<'de> {
                Deserialize::deserialize(deserializer).map(PathBuf::into_boxed_path)
            }
        }
```

--------------------------------

### Serialize implementation for NonZero integers

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Serializes non-zero integer types by calling their get() method.

```rust
macro_rules! nonzero_integers {
            ($($T:ident,)+) =>
            {
                $(impl Serialize for num::$T
                {
                    fn serialize<S>(&self, serializer: S) -> Result<S::Ok,
                    S::Error> where S: Serializer,
                    { self.get().serialize(serializer) }
                })+
            }
        }
```

```rust
impl Serialize for num::NonZeroI8 {
            fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
                where S: Serializer {
                self.get().serialize(serializer)
            }
        }
```

```rust
impl Serialize for num::NonZeroI16 {
            fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
                where S: Serializer {
                self.get().serialize(serializer)
            }
        }
```

```rust
impl Serialize for num::NonZeroI32 {
            fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
                where S: Serializer {
                self.get().serialize(serializer)
            }
        }
```

--------------------------------

### Implement PathVisitor for &Path

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=

Defines a visitor to handle borrowed path deserialization from strings or bytes.

```rust
impl<'a> Visitor<'a> for PathVisitor {
            type Value = &'a Path;
            fn expecting(&self, formatter: &mut fmt::Formatter)
                -> fmt::Result {
                formatter.write_str("a borrowed path")
            }
            fn visit_borrowed_str<E>(self, v: &'a str)
                -> Result<Self::Value, E> where E: Error {
                Ok(v.as_ref())
            }
            fn visit_borrowed_bytes<E>(self, v: &'a [u8])
                -> Result<Self::Value, E> where E: Error {
                str::from_utf8(v).map(AsRef::as_ref).map_err(|_|
                        Error::invalid_value(Unexpected::Bytes(v), &self))
            }
        }
```

--------------------------------

### Implement visit_i8, visit_i16, and visit_i32

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=std%3A%3Avec

Handles signed integer inputs by forwarding them to visit_i64.

```rust
fn visit_i8<E>(self, v: i8) -> Result<Self::Value, E> where E: Error {
    self.visit_i64(v as i64)
}
```

```rust
fn visit_i16<E>(self, v: i16) -> Result<Self::Value, E> where
    E: Error {
    self.visit_i64(v as i64)
}
```

```rust
fn visit_i32<E>(self, v: i32) -> Result<Self::Value, E> where
    E: Error {
    self.visit_i64(v as i64)
}
```

--------------------------------

### Implement Tuple Visitor for Fixed Size

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Demonstrates a custom Visitor implementation for a 6-element tuple using in-place seeding.

```rust
fn expecting(&self, formatter: &mut fmt::Formatter)
    -> fmt::Result {
    formatter.write_str("a tuple of size 6")
}
#[inline]
#[allow(non_snake_case)]
fn visit_seq<A>(self, mut seq: A)
    -> Result<Self::Value, A::Error> where A: SeqAccess<'de> {
    if match seq.next_element_seed(InPlaceSeed(&mut (self.0).0))
                {
                Ok(val) => val,
                Err(err) => return Err(err),
            }.is_none() {
        return Err(Error::invalid_length(0, &self));
    }
    if match seq.next_element_seed(InPlaceSeed(&mut (self.0).1))
                {
                Ok(val) => val,
                Err(err) => return Err(err),
            }.is_none() {
        return Err(Error::invalid_length(1, &self));
    }
    if match seq.next_element_seed(InPlaceSeed(&mut (self.0).2))
                {
                Ok(val) => val,
                Err(err) => return Err(err),
            }.is_none() {
        return Err(Error::invalid_length(2, &self));
    }
    if match seq.next_element_seed(InPlaceSeed(&mut (self.0).3))
                {
                Ok(val) => val,
                Err(err) => return Err(err),
            }.is_none() {
        return Err(Error::invalid_length(3, &self));
    }
    if match seq.next_element_seed(InPlaceSeed(&mut (self.0).4))
                {
                Ok(val) => val,
                Err(err) => return Err(err),
            }.is_none() {
        return Err(Error::invalid_length(4, &self));
    }
    if match seq.next_element_seed(InPlaceSeed(&mut (self.0).5))
                {
                Ok(val) => val,
                Err(err) => return Err(err),
            }.is_none() {
        return Err(Error::invalid_length(5, &self));
    }
    Ok(())
}
}
deserializer.deserialize_tuple(6, TupleInPlaceVisitor(place))
}
}
```

--------------------------------

### SerializeStruct Usage Example

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Demonstrates implementing the Serialize trait for a struct using SerializeStruct to define fields.

```rust
use serde::ser::{Serialize, SerializeStruct, Serializer};

struct Rgb {
    r: u8,
    g: u8,
    b: u8,
}

impl Serialize for Rgb {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        let mut rgb = serializer.serialize_struct("Rgb", 3)?;
        rgb.serialize_field("r", &self.r)?;
        rgb.serialize_field("g", &self.g)?;
        rgb.serialize_field("b", &self.b)?;
        rgb.end()
    }
}
```

--------------------------------

### Implement Serialize for u128

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=

Example implementation of the Serialize trait for u128, which delegates to the serializer's serialize_u128 method.

```rust
# use serde::Serializer;
#
# serde_core::__private_serialize!();
#
impl Serialize for u128 {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.serialize_u128(*self)
    }
}
```

--------------------------------

### Implement visit_i64 for Serde Visitor

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Handles i64 values during deserialization, including validation and conversion to a target type.

```rust
#[allow(irrefutable_let_patterns)]
                            if let Ok(v) = u128::try_from(v as u64) {
                                if let Some(nonzero) = Self::Value::new(v) {
                                    return Ok(nonzero);
                                }
                            }
                        }
                        Err(Error::invalid_value(Unexpected::Signed(v as i64),
                                &self))
                    }
                    fn visit_i64<E>(self, v: i64) -> Result<Self::Value, E>
                        where E: Error {
                        if 0 < v {
```

--------------------------------

### Compare stateless and stateful deserialization APIs

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Shows the transition from a standard stateless deserialization function to a stateful one using DeserializeSeed.

```rust
fn func<'de, T: Deserialize<'de>>() -> Result<T, Error>
```

```rust
fn func_seed<'de, T: DeserializeSeed<'de>>(seed: T) -> Result<T::Value, Error>
```

--------------------------------

### Implement Serialize for u32

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=

Example implementation of the Serialize trait for u32, which delegates to the serializer's serialize_u32 method.

```rust
# use serde::Serializer;
#
# serde_core::__private_serialize!();
#
impl Serialize for u32 {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.serialize_u32(*self)
    }
}
```

--------------------------------

### Implement numeric visitor methods for Serde

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Visitor methods for handling signed and unsigned integers with bounds checking and error reporting.

```rust
#[allow(irrefutable_let_patterns)]
                            if let Ok(v) = Self::Value::try_from(v as u64) {
                                return Ok(v as Self::Value);
                            }
                        }
                        Err(Error::invalid_value(Unexpected::Signed(v as i64),
                                &self))
                    }
                    #[inline]
                    fn visit_i64<E>(self, v: i64) -> Result<Self::Value, E>
                        where E: Error {
                        if 0 <= v {

                            #[allow(irrefutable_let_patterns)]
                            if let Ok(v) = Self::Value::try_from(v as u64) {
                                return Ok(v as Self::Value);
                            }
                        }
                        Err(Error::invalid_value(Unexpected::Signed(v as i64),
                                &self))
                    }
                    #[inline]
                    fn visit_u16<E>(self, v: u16) -> Result<Self::Value, E>
                        where E: Error {
                        Self::Value::try_from(v as
                                    u64).map_err(|_|
                                Error::invalid_value(Unexpected::Unsigned(v as u64), &self))
                    }
                    #[inline]
                    fn visit_u32<E>(self, v: u32) -> Result<Self::Value, E>
                        where E: Error {
                        Self::Value::try_from(v as
                                    u64).map_err(|_|
                                Error::invalid_value(Unexpected::Unsigned(v as u64), &self))
                    }
                    #[inline]
                    fn visit_u64<E>(self, v: u64) -> Result<Self::Value, E>
                        where E: Error {
                        Self::Value::try_from(v as
                                    u64).map_err(|_|
                                Error::invalid_value(Unexpected::Unsigned(v as u64), &self))
                    }
                }
                deserializer.deserialize_u8(PrimitiveVisitor)
            }
        }
```

--------------------------------

### Implement Serialize for u16

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=

Example implementation of the Serialize trait for u16, which delegates to the serializer's serialize_u16 method.

```rust
# use serde::Serializer;
#
# serde_core::__private_serialize!();
#
impl Serialize for u16 {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.serialize_u16(*self)
    }
}
```

--------------------------------

### Implement Serialize for u8

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=

Example implementation of the Serialize trait for u8, which delegates to the serializer's serialize_u8 method.

```rust
# use serde::Serializer;
#
# serde_core::__private_serialize!();
#
impl Serialize for u8 {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.serialize_u8(*self)
    }
}
```

--------------------------------

### Implement OptionVisitor

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Visitor implementation for deserializing Option types.

```rust
struct OptionVisitor<T> {
            marker: PhantomData<T>,
        }
        impl<'de, T> Visitor<'de> for OptionVisitor<T> where
            T: Deserialize<'de> {
            type Value = Option<T>;
            fn expecting(&self, formatter: &mut fmt::Formatter)
                -> fmt::Result {
                formatter.write_str("option")
            }
            #[inline]
            fn visit_unit<E>(self) -> Result<Self::Value, E> where E: Error {
                Ok(None)
            }
            #[inline]
            fn visit_none<E>(self) -> Result<Self::Value, E> where E: Error {
                Ok(None)
            }
            #[inline]
            fn visit_some<D>(self, deserializer: D)

```

--------------------------------

### Implement Serialize for i128

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=

Example implementation of the Serialize trait for i128, which delegates to the serializer's serialize_i128 method.

```rust
# use serde::Serializer;
#
# serde_core::__private_serialize!();
#
impl Serialize for i128 {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.serialize_i128(*self)
    }
}
```

--------------------------------

### Implement visit_u8, visit_u16, and visit_u32

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=std%3A%3Avec

Handles unsigned integer inputs by forwarding them to visit_u64.

```rust
fn visit_u8<E>(self, v: u8) -> Result<Self::Value, E> where E: Error {
    self.visit_u64(v as u64)
}
```

```rust
fn visit_u16<E>(self, v: u16) -> Result<Self::Value, E> where
    E: Error {
    self.visit_u64(v as u64)
}
```

```rust
fn visit_u32<E>(self, v: u32) -> Result<Self::Value, E> where
    E: Error {
    self.visit_u64(v as u64)
}
```

--------------------------------

### Implement Serialize for u128

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Example implementation of the Serialize trait for u128, noting that the default behavior returns an error.

```rust
impl Serialize for u128 {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.serialize_u128(*self)
    }
}
```

--------------------------------

### Implement visit_i16 for Serde Visitor

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Handles i16 input by checking for non-negative values and attempting a safe conversion.

```rust
                    #[inline]
                    fn visit_i16<E>(self, v: i16) -> Result<Self::Value, E>
                        where E: Error {
                        if 0 <= v {

                            #[allow(irrefutable_let_patterns)]
                            if let Ok(v) = Self::Value::try_from(v as u64) {
                                return Ok(v as Self::Value);
                            }
                        }
                        Err(Error::invalid_value(Unexpected::Signed(v as i64),
                                &self))
                    }
```

--------------------------------

### Implement visit_i8 for Serde Visitor

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Handles i8 input by checking for non-negative values and attempting a safe conversion.

```rust
                    #[inline]
                    fn visit_i8<E>(self, v: i8) -> Result<Self::Value, E> where
                        E: Error {
                        if 0 <= v {

                            #[allow(irrefutable_let_patterns)]
                            if let Ok(v) = Self::Value::try_from(v as u64) {
                                return Ok(v as Self::Value);
                            }
                        }
                        Err(Error::invalid_value(Unexpected::Signed(v as i64),
                                &self))
                    }
```

--------------------------------

### Implement Serialize for i128

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Example implementation of the Serialize trait for i128, noting that the default behavior returns an error.

```rust
impl Serialize for i128 {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: Serializer,
    {
        serializer.serialize_i128(*self)
    }
}
```

--------------------------------

### Implement visit_string for Visitor

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Handles owned string input, defaulting to visit_str and dropping the string.

```rust
#[inline]
#[doc(cfg(any(feature = "std", feature = "alloc")))]
fn visit_string<E>(self, v: String) -> Result<Self::Value, E> where
    E: Error {
    self.visit_str(&v)
}
```

--------------------------------

### Implement Impossible Serializer Helper

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Example of using the Impossible helper type to indicate unsupported serialization methods in a custom Serializer.

```rust
/// ```edition2021
        /// # use serde::ser::{Serializer, Impossible};
        /// # use serde_core::__private::doc::Error;
        /// #
        /// # struct MySerializer;
        /// #
        /// impl Serializer for MySerializer {
        ///     type Ok = ();
        ///     type Error = Error;
        ///
        ///     type SerializeSeq = Impossible<(), Error>;
        ///     /* other associated types */
        ///
        ///     /// This data format does not support serializing sequences.
        ///     fn serialize_seq(self,
        ///                      len: Option<usize>)
        ///                      -> Result<Self::SerializeSeq, Error> {
        ///         // Given Impossible cannot be instantiated, the only
        ///         // thing we can do here is to return an error.
        /// #         stringify! {
        ///         Err(...)
        /// #         };
        /// #         unimplemented!()
        ///     }
        ///
        ///     /* other Serializer methods */
        /// #     serde_core::__serialize_unimplemented! {
        /// #         bool i8 i16 i32 i64 u8 u16 u32 u64 f32 f64 char str bytes none some
        /// #         unit unit_struct unit_variant newtype_struct newtype_variant
        /// #         tuple tuple_struct tuple_variant map struct struct_variant
        /// #     }
        /// }
```

--------------------------------

### Tuple Deserialization Visitor Implementation

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=Option%3CT%3E%2C+%28T+-%3E+U%29+-%3E+Option%3CU%3E

Manual implementation of a tuple visitor for deserializing 13-element tuples in Rust using Serde.

```rust
                                }.is_none() {
                            return Err(Error::invalid_length(4, &self));
                        }
                        if match seq.next_element_seed(InPlaceSeed(&mut (self.0).5))
                                    {
                                    Ok(val) => val,
                                    Err(err) => return Err(err),
                                }.is_none() {
                            return Err(Error::invalid_length(5, &self));
                        }
                        if match seq.next_element_seed(InPlaceSeed(&mut (self.0).6))
                                    {
                                    Ok(val) => val,
                                    Err(err) => return Err(err),
                                }.is_none() {
                            return Err(Error::invalid_length(6, &self));
                        }
                        if match seq.next_element_seed(InPlaceSeed(&mut (self.0).7))
                                    {
                                    Ok(val) => val,
                                    Err(err) => return Err(err),
                                }.is_none() {
                            return Err(Error::invalid_length(7, &self));
                        }
                        if match seq.next_element_seed(InPlaceSeed(&mut (self.0).8))
                                    {
                                    Ok(val) => val,
                                    Err(err) => return Err(err),
                                }.is_none() {
                            return Err(Error::invalid_length(8, &self));
                        }
                        if match seq.next_element_seed(InPlaceSeed(&mut (self.0).9))
                                    {
                                    Ok(val) => val,
                                    Err(err) => return Err(err),
                                }.is_none() {
                            return Err(Error::invalid_length(9, &self));
                        }
                        if match seq.next_element_seed(InPlaceSeed(&mut (self.0).10))
                                    {
                                    Ok(val) => val,
                                    Err(err) => return Err(err),
                                }.is_none() {
                            return Err(Error::invalid_length(10, &self));
                        }
                        if match seq.next_element_seed(InPlaceSeed(&mut (self.0).11))
                                    {
                                    Ok(val) => val,
                                    Err(err) => return Err(err),
                                }.is_none() {
                            return Err(Error::invalid_length(11, &self));
                        }
                        if match seq.next_element_seed(InPlaceSeed(&mut (self.0).12))
                                    {
                                    Ok(val) => val,
                                    Err(err) => return Err(err),
                                }.is_none() {
                            return Err(Error::invalid_length(12, &self));
                        }
                        Ok(())
                    }
                }
                deserializer.deserialize_tuple(13, TupleInPlaceVisitor(place))
            }
        }
        #[doc(hidden)]
        impl<'de, T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13>
            Deserialize<'de> for
            (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13) where
            T0: Deserialize<'de>, T1: Deserialize<'de>, T2: Deserialize<'de>,
            T3: Deserialize<'de>, T4: Deserialize<'de>, T5: Deserialize<'de>,
            T6: Deserialize<'de>, T7: Deserialize<'de>, T8: Deserialize<'de>,
            T9: Deserialize<'de>, T10: Deserialize<'de>,
            T11: Deserialize<'de>, T12: Deserialize<'de>,
            T13: Deserialize<'de> {
            #[inline]
            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
                D: Deserializer<'de> {
                struct TupleVisitor<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9,
                    T10, T11, T12, T13> {
                    marker: PhantomData<(T0, T1, T2, T3, T4, T5, T6, T7, T8, T9,
                    T10, T11, T12, T13)>,
                }
                impl<'de, T0: Deserialize<'de>, T1: Deserialize<'de>,
                    T2: Deserialize<'de>, T3: Deserialize<'de>,
                    T4: Deserialize<'de>, T5: Deserialize<'de>,
                    T6: Deserialize<'de>, T7: Deserialize<'de>,
                    T8: Deserialize<'de>, T9: Deserialize<'de>,
                    T10: Deserialize<'de>, T11: Deserialize<'de>,
                    T12: Deserialize<'de>, T13: Deserialize<'de>> Visitor<'de>
                    for
                    TupleVisitor<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10,
```

--------------------------------

### Implement visit_u32 for Serde Visitor

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Handles u32 input by casting it directly to the target value type.

```rust
                    #[inline]
                    fn visit_u32<E>(self, v: u32) -> Result<Self::Value, E>
                        where E: Error {
                        Ok(v as Self::Value)
                    }
```

--------------------------------

### Implement ArrayInPlaceVisitor for fixed-size arrays

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=Option%3CT%3E%2C+%28T+-%3E+U%29+-%3E+Option%3CU%3E

Defines a Visitor for a 20-element array that iterates through the sequence and populates the array in-place.

```rust
impl<'a, 'de, T> Visitor<'de> for ArrayInPlaceVisitor<'a, [T; 20]>
            where T: Deserialize<'de> {
            type Value = ();
            fn expecting(&self, formatter: &mut fmt::Formatter)
                -> fmt::Result {
                formatter.write_str("an array of length 20")
            }
            #[inline]
            fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
                where A: SeqAccess<'de> {
                let mut fail_idx = None;
                for (idx, dest) in self.0[..].iter_mut().enumerate() {
                    if match seq.next_element_seed(InPlaceSeed(dest)) {
                                Ok(val) => val,
                                Err(err) => return Err(err),
                            }.is_none() {
                        fail_idx = Some(idx);
                        break;
                    }
                }
                if let Some(idx) = fail_idx {
                    return Err(Error::invalid_length(idx, &self));
                }
```

--------------------------------

### Implement visit_f64 for Visitor

Source: https://docs.rs/serde/latest/src/serde/lib.rs.html?search=u32+-%3E+bool

Handles f64 input, defaulting to a type error.

```rust
fn visit_f64<E>(self, v: f64) -> Result<Self::Value, E> where
    E: Error {
    Err(Error::invalid_type(Unexpected::Float(v), &self))
}
```
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