### Accessing Metadata with `and_then`

Source: https://docs.rs/signifix/0.10.1/signifix/metric/type.Result.html

This example demonstrates chaining fallible operations using `and_then` to get file metadata and modified time. It handles potential errors like file not found.

```rust
use std::{io::ErrorKind, path::Path};

// Note: on Windows "/" maps to "C:\\"
let root_modified_time = Path::new("/").metadata().and_then(|md| md.modified());
assert!(root_modified_time.is_ok());

let should_fail = Path::new("/bad/path").metadata().and_then(|md| md.modified());
assert!(should_fail.is_err());
assert_eq!(should_fail.unwrap_err().kind(), ErrorKind::NotFound);
```

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

### into_ok() - Get Ok value, never panics

Source: https://docs.rs/signifix/0.10.1/signifix/binary/type.Result.html

Returns the contained Ok value. This method is guaranteed not to panic.

```APIDOC
## into_ok()

### Description
Returns the contained `Ok` value, but never panics. This method is known to never panic on the result types it is implemented for.

### Method
`into_ok`

### Parameters
None

### Request Example
```rust
fn only_good_news() -> Result<String, !> {
    Ok("this is fine".into())
}

let s: String = only_good_news().into_ok();
println!("{s}");
```

### Response
#### Success Response (T)
- The contained `Ok` value.

#### Response Example
```rust
// If Ok(value), returns value
// This method is designed for Result types where the Err variant is unreachable (!).
```
```

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

### Handling File Metadata Operations with `Result`

Source: https://docs.rs/signifix/0.10.1/signifix/binary/type.Result.html

Demonstrates using `Result` and `and_then` for file system operations like getting metadata, which can fail due to path errors or permissions. Note that path interpretation can be OS-dependent.

```rust
use std::{io::ErrorKind, path::Path};

// Note: on Windows "/" maps to "C:\"
let root_modified_time = Path::new("/").metadata().and_then(|md| md.modified());
assert!(root_modified_time.is_ok());

let should_fail = Path::new("/bad/path").metadata().and_then(|md| md.modified());
assert!(should_fail.is_err());
assert_eq!(should_fail.unwrap_err().kind(), ErrorKind::NotFound);
```

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

### Undefined Behavior Example: `unwrap_err_unchecked` on Ok

Source: https://docs.rs/signifix/0.10.1/signifix/metric/type.Result.html

Demonstrates the undefined behavior that occurs when `unwrap_err_unchecked` is called on a `Result` that is `Ok`.

```rust
let x: Result<u32, &str> = Ok(2);
unsafe { x.unwrap_err_unchecked() }; // Undefined behavior!
```

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

### Collect Results with Underflow Check

Source: https://docs.rs/signifix/0.10.1/signifix/metric/type.Result.html

This example shows `collect` used with `checked_sub` to detect underflow. The operation stops and returns the first `Err` encountered.

```rust
let v = vec![1, 2, 0];
let res: Result<Vec<u32>, &'static str> = v.iter().map(|x: &u32| 
    x.checked_sub(1).ok_or("Underflow!")
).collect();
assert_eq!(res, Err("Underflow!"));
```

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

### unwrap_or_default() - Get Ok value or default

Source: https://docs.rs/signifix/0.10.1/signifix/binary/type.Result.html

Returns the contained Ok value or the default value for the type if the Result is Err.

```APIDOC
## unwrap_or_default()

### Description
Returns the contained `Ok` value or a default value for the type if `self` is `Err`.

### Method
`unwrap_or_default`

### Parameters
None

### Request Example
```rust
let good_year_from_input = "1909";
let bad_year_from_input = "190blarg";
let good_year = good_year_from_input.parse::<u32>().unwrap_or_default();
let bad_year = bad_year_from_input.parse::<u32>().unwrap_or_default();

assert_eq!(1909, good_year);
assert_eq!(0, bad_year);
```

### Response
#### Success Response (T)
- The contained `Ok` value or the default value of type `T`.

#### Response Example
```rust
// If Ok(value), returns value
// If Err, returns default::default()
```
```

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

### unwrap() - Get Ok value or panic

Source: https://docs.rs/signifix/0.10.1/signifix/binary/type.Result.html

Retrieves the value from an Ok variant. Panics if the Result is an Err, using the error's value as the panic message.

```APIDOC
## unwrap()

### Description
Returns the contained `Ok` value. Panics if the `self` is `Err`.

### Method
`unwrap`

### Parameters
None

### Request Example
```rust
let x: Result<u32, &str> = Ok(2);
assert_eq!(x.unwrap(), 2);
```

### Response
#### Success Response (T)
- The contained `Ok` value.

#### Response Example
```rust
// If Ok(2), returns 2
// If Err("message"), panics with "message"
```
```

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

### into_err() - Get Err value, never panics

Source: https://docs.rs/signifix/0.10.1/signifix/binary/type.Result.html

Returns the contained Err value. This method is guaranteed not to panic.

```APIDOC
## into_err()

### Description
Returns the contained `Err` value, but never panics. This method is known to never panic on the result types it is implemented for.

### Method
`into_err`

### Parameters
None

### Request Example
```rust
fn only_bad_news() -> Result<!, String> {
    Err("Oops, it failed".into())
}

let error: String = only_bad_news().into_err();
println!("{error}");
```

### Response
#### Success Response (E)
- The contained `Err` value.

#### Response Example
```rust
// If Err(value), returns value
// This method is designed for Result types where the Ok variant is unreachable (!).
```
```

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

### Format numbers with Signifix notations

Source: https://docs.rs/signifix/0.10.1/signifix/index.html

Demonstrates how to use metric and binary prefixes to format numbers into fixed-width strings.

```rust
use std::convert::TryFrom;

use signifix::{metric, binary, Result};

let metric = |number| -> Result<(String, String)> {
	let number = metric::Signifix::try_from(number)?;
	Ok((format!("{}", number), format!("{:#}", number)))
};
let binary = |number| -> Result<String> {
	let number = binary::Signifix::try_from(number)?;
	Ok(format!("{}", number))
};

// Three different decimal mark positions covering the three powers of ten
// of a particular metric prefix.
assert_eq!(metric(1E-04), Ok(("100.0 µ".into(), "100µ0".into()))); // 3rd
assert_eq!(metric(1E-03), Ok(("1.000 m".into(), "1m000".into()))); // 1st
assert_eq!(metric(1E-02), Ok(("10.00 m".into(), "10m00".into()))); // 2nd
assert_eq!(metric(1E-01), Ok(("100.0 m".into(), "100m0".into()))); // 3rd
assert_eq!(metric(1E+00), Ok(("1.000  ".into(), "1#000".into()))); // 1st
assert_eq!(metric(1E+01), Ok(("10.00  ".into(), "10#00".into()))); // 2nd
assert_eq!(metric(1E+02), Ok(("100.0  ".into(), "100#0".into()))); // 3rd
assert_eq!(metric(1E+03), Ok(("1.000 k".into(), "1k000".into()))); // 1st
assert_eq!(metric(1E+04), Ok(("10.00 k".into(), "10k00".into()))); // 2nd
assert_eq!(metric(1E+05), Ok(("100.0 k".into(), "100k0".into()))); // 3rd
assert_eq!(metric(1E+06), Ok(("1.000 M".into(), "1M000".into()))); // 1st

// Three different decimal mark positions and a thousands separator covering
// the four powers of ten of a particular binary prefix.
assert_eq!(binary(1_024f64.powi(0) * 1E+00), Ok("1.000   ".into())); // 1st
assert_eq!(binary(1_024f64.powi(0) * 1E+01), Ok("10.00   ".into())); // 2nd
assert_eq!(binary(1_024f64.powi(0) * 1E+02), Ok("100.0   ".into())); // 3rd
assert_eq!(binary(1_024f64.powi(0) * 1E+03), Ok("1 000   ".into())); // 4th
assert_eq!(binary(1_024f64.powi(1) * 1E+00), Ok("1.000 Ki".into())); // 1st
assert_eq!(binary(1_024f64.powi(1) * 1E+01), Ok("10.00 Ki".into())); // 2nd
assert_eq!(binary(1_024f64.powi(1) * 1E+02), Ok("100.0 Ki".into())); // 3rd
assert_eq!(binary(1_024f64.powi(1) * 1E+03), Ok("1 000 Ki".into())); // 4th
assert_eq!(binary(1_024f64.powi(2) * 1E+00), Ok("1.000 Mi".into())); // 1st

// Rounding over prefixes is safe against floating-point inaccuracies.
assert_eq!(metric(999.949_999_999_999_8),
	Ok(("999.9  ".into(), "999#9".into())));
assert_eq!(metric(999.949_999_999_999_9),
	Ok(("1.000 k".into(), "1k000".into())));
assert_eq!(binary(1_023.499_999_999_999_94),
	Ok("1 023   ".into()));
assert_eq!(binary(1_023.499_999_999_999_95),
	Ok("1.000 Ki".into()));
```

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

### impl<T, U, E> Product<Result<U, E>> for Result<T, E>

Source: https://docs.rs/signifix/0.10.1/signifix/type.Result.html

Provides the Product implementation for Result, allowing multiplication of Results if T implements Product.

```APIDOC
## Product<Result<U, E>> for Result<T, E>

### Description
This implementation allows for the multiplication of `Result` types, provided that the `Ok` type `T` implements the `Product` trait for the `Ok` type `U`.

### Method
`product` (from the `Product` trait)

### Endpoint
N/A (Implementation detail)

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Request Example
```rust
// Example requires T to implement Product<U>
// For instance, if T is Vec<U>
let results: Vec<Result<i32, &str>> = vec![Ok(2), Ok(3)];
let product_result: Result<i32, &str> = results.into_iter().product();
assert_eq!(product_result, Ok(6));

let results_with_err: Vec<Result<i32, &str>> = vec![Ok(2), Err("error"), Ok(3)];
let product_result_err: Result<i32, &str> = results_with_err.into_iter().product();
assert_eq!(product_result_err, Err("error"));
```

### Response
#### Success Response (200)
- **Result<T, E>** (type) - The product of the `Ok` values if all elements are `Ok`, otherwise the first `Err` encountered.

#### Response Example
```rust
// Ok(6)
// Err("error")
```
```

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

### into_ok()

Source: https://docs.rs/signifix/0.10.1/signifix/type.Result.html

Returns the contained `Ok` value. This is a nightly-only experimental API that is guaranteed not to panic.

```APIDOC
## into_ok()

### Description
Returns the contained `Ok` value. This is a nightly-only experimental API that is guaranteed not to panic.

### Method
`into_ok()`

### Parameters
None

### Request Example
```rust
fn only_good_news() -> Result<String, !> {
    Ok("this is fine".into())
}

let s: String = only_good_news().into_ok();
println!("{s}");
```

### Response
#### Success Response (T)
Returns the contained `Ok` value.

#### Response Example
```rust
// If Ok(value), returns value.
```
```

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

### Undefined Behavior Example: `unwrap_unchecked` on Err

Source: https://docs.rs/signifix/0.10.1/signifix/metric/type.Result.html

Demonstrates the undefined behavior that occurs when `unwrap_unchecked` is called on a `Result` that is `Err`.

```rust
let x: Result<u32, &str> = Err("emergency failure");
unsafe { x.unwrap_unchecked() }; // Undefined behavior!
```

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

### Convert Result to Iterator (Ok Case)

Source: https://docs.rs/signifix/0.10.1/signifix/metric/type.Result.html

When a `Result` is `Ok`, `into_iter` yields a single element containing the value. This example collects the value into a vector.

```rust
let x: Result<u32, &str> = Ok(5);
let v: Vec<u32> = x.into_iter().collect();
assert_eq!(v, [5]);
```

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

### Signifix Crate Overview

Source: https://docs.rs/signifix/0.10.1/signifix/binary/index.html

Provides an overview of the signifix crate's main components and their functionalities.

```APIDOC
## Module signifix

Formatter of Signifix default notation with binary prefix.

### Structs

#### Signifix

Intermediate implementor type of this module’s `TryFrom` and `Display` trait implementations. Former tries to convert a given number into this type by determining the appropriate binary prefix, the normalized significand, and the decimal mark position while latter uses this type’s fields to format the number as a string of four significant figures inclusive the binary prefix symbol.

### Enums

#### Error

An error arising from this module’s `TryFrom` trait implementation for its `Signifix` type.

### Constants

#### DEF_MAX_LEN

Number of characters in default notation when a sign is prefixed.

#### DEF_MIN_LEN

Number of characters in default notation when no sign is prefixed.

#### FACTORS

Binary prefix factors from `1 024 ^ 1` to `1 024 ^ 8` indexed from `1` to `8`, or `1 024 ^ 0` indexed at `0`.

#### SYMBOLS

Binary prefix symbols from `Some("Ki")` to `Some("Yi")` indexed from `1` to `8`, or `None` indexed at `0`.

### Type Aliases

#### Result

The canonical `Result` type using this module’s `Error` type.
```

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

### Customize Output via Parts

Source: https://docs.rs/signifix/0.10.1/signifix/index.html

Extracts integer and fractional parts from Signifix to build custom formatted tables.

```rust
use std::convert::TryFrom;

use signifix::metric::{Signifix, Result};

struct SignifixTable<'a>(&'a[Signifix]);

impl<'a> std::fmt::Display for SignifixTable<'a> {
	fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
		f.pad(" Int Fra   10³\n")?;
		f.pad("---- ---- ----\n")?;
		for entry in self.0 {
			let (integer, fractional) = entry.parts();
			f.pad(&format!("{:4} {:<3}    {:2}\n",
				integer, fractional, entry.prefix() as i32 - 8))?;
		}
		Ok(())
	}
}

let customization = |entries: &[_]| -> Result<String> {
	let mut table = Vec::with_capacity(entries.len());
	for entry in entries {
		table.push(Signifix::try_from(*entry)?);
	}
	Ok(SignifixTable(&table).to_string())
};

assert_eq!(customization(&[
	 1.234E-06,
	 12.34E+00,
	-123.4E+24,
]), Ok(concat!(
	" Int Fra   10³\n",
	"---- ---- ----\n",
	"   1 234    -2\n",
	"  12 34      0\n",
	"-123 4       8\n",
).into()));
```

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

### try_into Conversion Method

Source: https://docs.rs/signifix/0.10.1/signifix/metric/struct.Signifix.html

Documentation for the try_into conversion method used for type transformation.

```APIDOC
## fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

### Description
Performs the conversion from one type to another, returning a Result to handle potential conversion errors.

### Parameters
- **self** (T) - Required - The instance to be converted.

### Response
- **Result<U, <U as TryFrom<T>>::Error>** - Returns the converted type U on success, or an error defined by the TryFrom implementation on failure.
```

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

### unwrap_err() - Get Err value

Source: https://docs.rs/signifix/0.10.1/signifix/binary/type.Result.html

Retrieves the error from an Err variant. Panics if the Result is an Ok, using the Ok's value as the panic message.

```APIDOC
## unwrap_err()

### Description
Returns the contained `Err` value, consuming the `self` value. Panics if the value is an `Ok`.

### Method
`unwrap_err`

### Parameters
None

### Request Example
```rust
let x: Result<u32, &str> = Err("emergency failure");
assert_eq!(x.unwrap_err(), "emergency failure");
```

### Response
#### Success Response (E)
- The contained `Err` value.

#### Response Example
```rust
// If Err("message"), returns "message"
// If Ok(2), panics with "2"
```
```

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

### Display transfer rates in terminal

Source: https://docs.rs/signifix/0.10.1/signifix/index.html

Shows how to format transfer rates with custom handling for slow, idle, or error states.

```rust
use std::convert::TryFrom;

use std::f64;
use std::time::Duration;
use signifix::metric::{Signifix, Error, DEF_MIN_LEN};

let transfer_rate = |bytes: u64, duration: Duration| -> String {
	let seconds = duration.as_secs() as f64
		+ duration.subsec_nanos() as f64 * 1E-09;
	let bytes_per_second = bytes as f64 / seconds;
	let unit = "B/s";
	let rate = match Signifix::try_from(bytes_per_second) {
		Ok(rate) => if rate.factor() < 1E+00 {
			" - slow - ".into() // instead of mB/s, µB/s, ...
		} else {
			format!("{}{}", rate, unit) // normal rate
		},
		Err(case) => match case {
			Error::OutOfLowerBound(rate) => if rate == 0f64 {
				" - idle - " // no progress at all
			} else {
				" - slow - " // almost no progress
			},
			Error::OutOfUpperBound(rate) => if rate == f64::INFINITY {
				" - ---- - " // zero nanoseconds
			} else {
				" - fast - " // awkwardly fast
			},
			Error::Nan => " - ---- - ", // zero bytes in zero nanoseconds
		}.into(),
	};
	debug_assert_eq!(rate.chars().count(),
		DEF_MIN_LEN + unit.chars().count());
	rate
};

assert_eq!(transfer_rate(42_667, Duration::from_secs(300)), "142.2  B/s");
assert_eq!(transfer_rate(42_667, Duration::from_secs(030)), "1.422 kB/s");
assert_eq!(transfer_rate(42_667, Duration::from_secs(003)), "14.22 kB/s");
assert_eq!(transfer_rate(00_001, Duration::from_secs(003)), " - slow - ");
assert_eq!(transfer_rate(00_000, Duration::from_secs(003)), " - idle - ");
assert_eq!(transfer_rate(42_667, Duration::from_secs(000)), " - ---- - ");
```

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

### Convert Result to Iterator (Err Case)

Source: https://docs.rs/signifix/0.10.1/signifix/metric/type.Result.html

When a `Result` is `Err`, `into_iter` yields no elements. This example shows collecting an `Err` result, which results in an empty vector.

```rust
let x: Result<u32, &str> = Err("nothing!");
let v: Vec<u32> = x.into_iter().collect();
assert_eq!(v, []);
```

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

### Visualize Filesize Differences

Source: https://docs.rs/signifix/0.10.1/signifix/index.html

Uses the metric module to format numeric differences with a plus sign for positive values and a constant indicator for zero.

```rust
use std::convert::TryFrom;

use signifix::metric::{Signifix, Error, Result};

let filesize_diff = |curr, prev| -> Result<String> {
	Signifix::try_from(curr - prev).map(|diff| format!("{:+#}", diff))
		.or_else(|case| if case == Error::OutOfLowerBound(0f64)
			{ Ok("=const".into()) } else { Err(case) })
};

assert_eq!(filesize_diff(78_346, 57_393), Ok("+20k95".into()));
assert_eq!(filesize_diff(93_837, 93_837), Ok("=const".into()));
assert_eq!(filesize_diff(27_473, 36_839), Ok("-9k366".into()));
```

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

### Calculate Boundary Statistics

Source: https://docs.rs/signifix/0.10.1/signifix/index.html

Utilizes the binary module to represent memory usage as a percentage of a total size, handling small values with a specific threshold.

```rust
use std::convert::TryFrom;

use signifix::binary::{Signifix, Error, Result};

let boundary_stat = |used: u64, size: u64| -> Result<String> {
	if used == 0 {
		let size = Signifix::try_from(size)?;
		return Ok(format!("    0   B (    0 %) of {}B", size));
	}
	let p100 = Signifix::try_from(used as f64 / size as f64 * 100.0)
		.map(|p100| format!("{:.*} %", p100.exponent(), p100.significand()))
		.or_else(|error| if let Error::OutOfLowerBound(_) = error
			{ Ok("  < 1 %".into()) } else { Err(error) })?;
	let used = Signifix::try_from(used)?;
	let size = Signifix::try_from(size)?;
	Ok(format!("{}B ({}) of {}B", used, p100, size))
};

assert_eq!(boundary_stat(0_000u64.pow(1), 1_024u64.pow(3)),
	Ok("    0   B (    0 %) of 1.000 GiB".into()));
assert_eq!(boundary_stat(1_024u64.pow(2), 1_024u64.pow(3)),
	Ok("1.000 MiB (  < 1 %) of 1.000 GiB".into()));
assert_eq!(boundary_stat(3_292u64.pow(2), 1_024u64.pow(3)),
	Ok("10.34 MiB (1.009 %) of 1.000 GiB".into()));
assert_eq!(boundary_stat(8_192u64.pow(2), 1_024u64.pow(3)),
	Ok("64.00 MiB (6.250 %) of 1.000 GiB".into()));
assert_eq!(boundary_stat(1_000u64.pow(3), 1_024u64.pow(3)),
	Ok("953.7 MiB (93.13 %) of 1.000 GiB".into()));
assert_eq!(boundary_stat(1_024u64.pow(3), 1_024u64.pow(3)),
	Ok("1.000 GiB (100.0 %) of 1.000 GiB".into()));
```

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

### expect_err() - Get Err value or panic

Source: https://docs.rs/signifix/0.10.1/signifix/binary/type.Result.html

Retrieves the error from an Err variant. Panics if the Result is an Ok, including the provided message and the Ok's content in the panic message.

```APIDOC
## expect_err()

### Description
Returns the contained `Err` value, consuming the `self` value. Panics if the value is an `Ok`.

### Method
`expect_err`

### Parameters
- **msg** (string) - Required - The message to include in the panic if the Result is `Ok`.

### Request Example
```rust
let x: Result<u32, &str> = Ok(10);
x.expect_err("Testing expect_err"); // panics with `Testing expect_err: 10`
```

### Response
#### Success Response (E)
- The contained `Err` value.

#### Response Example
```rust
// If Err("message"), returns "message"
// If Ok(10), panics with "Testing expect_err: 10"
```
```

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

### fn product<I>

Source: https://docs.rs/signifix/0.10.1/signifix/binary/type.Result.html

Calculates the product of elements in an iterator of Results, short-circuiting on the first Err encountered.

```APIDOC
## fn product<I>(iter: I) -> Result<T, E>

### Description
Takes each element in the Iterator: if it is an Err, no further elements are taken, and the Err is returned. Should no Err occur, the product of all elements is returned.

### Parameters
#### Path Parameters
- **iter** (Iterator<Item = Result<U, E>>) - Required - The iterator containing Result values to multiply.
```

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

### Collect Results from Iterator

Source: https://docs.rs/signifix/0.10.1/signifix/metric/type.Result.html

Use `collect` to aggregate results from an iterator. If any element is an Err, it's returned immediately. Otherwise, a container with all Ok values is returned. This example demonstrates checking for overflow.

```rust
let v = vec![1, 2];
let res: Result<Vec<u32>, &'static str> = v.iter().map(|x: &u32| 
    x.checked_add(1).ok_or("Overflow!")
).collect();
assert_eq!(res, Ok(vec![2, 3]));
```

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

### Signifix Formatting

Source: https://docs.rs/signifix/0.10.1/signifix/binary/struct.Signifix.html

Custom formatting method for localized output.

```APIDOC
## fmt

### Description
Format trait implementation allowing explicit localization of the output string.

### Parameters
- **decimal_mark** (str) - The character used as the decimal separator.
- **grouping_sep** (str) - The character used as the grouping separator.

### Response
- **Result** - Returns the formatted string representation of the Signifix value.
```

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

### Constant DEF_MIN_LEN

Source: https://docs.rs/signifix/0.10.1/signifix/metric/constant.DEF_MIN_LEN.html

Documentation for the DEF_MIN_LEN constant used in signifix::metric.

```APIDOC
## CONSTANT DEF_MIN_LEN

### Description
Number of characters in default notation when no sign is prefixed.

### Definition
`pub const DEF_MIN_LEN: usize = 7;`
```

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

### Constant DEF_MAX_LEN

Source: https://docs.rs/signifix/0.10.1/signifix/binary/constant.DEF_MAX_LEN.html

Documentation for the DEF_MAX_LEN constant used in the signifix crate.

```APIDOC
## Constant: DEF_MAX_LEN

### Description
Represents the number of characters in the default notation when a sign is prefixed.

### Value
9 (usize)
```

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

### TryInto Trait Methods

Source: https://docs.rs/signifix/0.10.1/signifix/binary/struct.Signifix.html

Documentation for the try_into conversion method and its associated error type.

```APIDOC
## try_into

### Description
Performs the conversion from one type to another, returning a Result containing the converted type or an error.

### Method
Rust Trait Method

### Parameters
- **self** (T) - Required - The instance to be converted.

### Response
#### Success Response
- **Result<U, Error>** - Returns the converted type U or the associated conversion error.
```

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

### Convert Result to reference with as_ref

Source: https://docs.rs/signifix/0.10.1/signifix/metric/type.Result.html

Produces a new Result containing references to the original values.

```rust
let x: Result<u32, &str> = Ok(2);
assert_eq!(x.as_ref(), Ok(&2));

let x: Result<u32, &str> = Err("Error");
assert_eq!(x.as_ref(), Err(&"Error"));
```

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

### Result::unwrap

Source: https://docs.rs/signifix/0.10.1/signifix/type.Result.html

Returns the contained Ok value or panics.

```APIDOC
## unwrap(self) -> T

### Description
Returns the contained `Ok` value, consuming the `self` value. Panics if the value is an `Err`.
```

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

### impl<T, E> PartialEq for Result<T, E>

Source: https://docs.rs/signifix/0.10.1/signifix/type.Result.html

Provides equality comparison for Result types if both T and E implement PartialEq.

```APIDOC
## fn eq(&self, other: &Result<T, E>) -> bool

### Description
Tests for `self` and `other` values to be equal, and is used by `==`.

### Method
`eq`

### Endpoint
N/A (Implementation detail)

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Request Example
```rust
let res1: Result<i32, &str> = Ok(10);
let res2: Result<i32, &str> = Ok(10);
assert!(res1 == res2);

let res3: Result<i32, &str> = Err("error");
let res4: Result<i32, &str> = Err("error");
assert!(res3 == res4);

let res5: Result<i32, &str> = Ok(10);
let res6: Result<i32, &str> = Ok(20);
assert!(res5 != res6);

let res7: Result<i32, &str> = Ok(10);
let res8: Result<i32, &str> = Err("error");
assert!(res7 != res8);
```

### Response
#### Success Response (200)
- **bool** (type) - `true` if the Results are equal, `false` otherwise.

#### Response Example
```rust
// true
// false
```
```

```APIDOC
## fn ne(&self, other: &Rhs) -> bool

### Description
Tests for `!=`.

### Method
`ne`

### Endpoint
N/A (Implementation detail)

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Request Example
```rust
let res1: Result<i32, &str> = Ok(10);
let res2: Result<i32, &str> = Ok(20);
assert!(res1 != res2);

let res3: Result<i32, &str> = Err("error1");
let res4: Result<i32, &str> = Err("error2");
assert!(res3 != res4);

let res5: Result<i32, &str> = Ok(10);
let res6: Result<i32, &str> = Ok(10);
assert!(res5 == res6); // Demonstrating the opposite of ne
```

### Response
#### Success Response (200)
- **bool** (type) - `true` if the Results are not equal, `false` otherwise.

#### Response Example
```rust
// true
// false
```
```

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

### TryFrom Numeric Conversions for Signifix

Source: https://docs.rs/signifix/0.10.1/signifix/metric/struct.Signifix.html

Endpoints representing the conversion of various numeric types into a Signifix instance.

```APIDOC
## TryFrom<T> for Signifix

### Description
Converts a numeric value into a Signifix instance. Returns a Result containing the Signifix instance or an Error if the conversion fails.

### Parameters
#### Request Body
- **number** (f64, i128, i16, i32, i64, i8, isize, u128, u16, u32, u64, u8, usize) - Required - The numeric value to convert.

### Response
#### Success Response (200)
- **Signifix** (Object) - The successfully converted Signifix instance.

#### Error Response
- **Error** (Type) - The error returned in the event of a conversion failure.
```

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

### Implement Custom Localizations

Source: https://docs.rs/signifix/0.10.1/signifix/index.html

Wraps Signifix in newtypes to implement locale-specific formatting by overriding the Display trait and using the fmt method.

```rust
use std::convert::TryFrom;

use signifix::binary::{Signifix, Result};

struct SignifixSi(Signifix); // English SI style (default)
struct SignifixEn(Signifix); // English locale (whitespace -> comma)
struct SignifixDe(Signifix); // German locale (comma <-> point)

impl std::fmt::Display for SignifixSi {
	fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
		std::fmt::Display::fmt(&self.0, f)
	}
}
impl std::fmt::Display for SignifixEn {
	fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
		self.0.fmt(f, ".", ",")
	}
}
impl std::fmt::Display for SignifixDe {
	fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
		self.0.fmt(f, ",", ".")
	}
}

let localizations = |number| -> Result<(String, String, String)> {
	Signifix::try_from(number).map(|number| (
		format!("{}", SignifixSi(number)),
		format!("{}", SignifixEn(number)),
		format!("{}", SignifixDe(number)),
	))
};

assert_eq!(localizations(999.9f64 * 1_024f64),
	Ok(("999.9 Ki".into(), "999.9 Ki".into(), "999,9 Ki".into())));
assert_eq!(localizations(1_000f64 * 1_024f64),
	Ok(("1 000 Ki".into(), "1,000 Ki".into(), "1.000 Ki".into())));
```

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

### Unwrap or Default Value

Source: https://docs.rs/signifix/0.10.1/signifix/metric/type.Result.html

Returns the Ok value or the default value of the type if the result is an Err.

```rust
let good_year_from_input = "1909";
let bad_year_from_input = "190blarg";
let good_year = good_year_from_input.parse().unwrap_or_default();
let bad_year = bad_year_from_input.parse().unwrap_or_default();

assert_eq!(1909, good_year);
assert_eq!(0, bad_year);
```

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

### Collect Result Iterators

Source: https://docs.rs/signifix/0.10.1/signifix/type.Result.html

Demonstrates how to collect an iterator of Results into a Result containing a collection, stopping at the first error.

```rust
let v = vec![1, 2];
let res: Result<Vec<u32>, &'static str> = v.iter().map(|x: &u32|
    x.checked_add(1).ok_or("Overflow!")
).collect();
assert_eq!(res, Ok(vec![2, 3]));
```

```rust
let v = vec![1, 2, 0];
let res: Result<Vec<u32>, &'static str> = v.iter().map(|x: &u32|
    x.checked_sub(1).ok_or("Underflow!")
).collect();
assert_eq!(res, Err("Underflow!"));
```

```rust
let v = vec![3, 2, 1, 10];
let mut shared = 0;
let res: Result<Vec<u32>, &'static str> = v.iter().map(|x: &u32| {
    shared += x;
    x.checked_sub(2).ok_or("Underflow!")
}).collect();
assert_eq!(res, Err("Underflow!"));
assert_eq!(shared, 6);
```

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

### Signifix Struct Methods

Source: https://docs.rs/signifix/0.10.1/signifix/binary/struct.Signifix.html

Methods available on the Signifix struct for accessing normalized numerical components and binary prefix information.

```APIDOC
## Signifix Methods

### Description
Methods to retrieve normalized significand components, binary prefix factors, and symbols from a Signifix instance.

### Methods
- **significand()** (f64) - Returns the signed significand normalized from ±1.000 to ±999.9.
- **numerator()** (i32) - Returns the signed significand numerator from ±1 000 to ±9 999.
- **denominator()** (i32) - Returns the significand denominator (1, 10, 100, or 1 000).
- **exponent()** (usize) - Returns the exponent of the significand denominator (0 to 3).
- **integer()** (i32) - Returns the signed integer part of the significand.
- **fractional()** (i32) - Returns the fractional part of the significand.
- **parts()** ((i32, i32)) - Returns the signed integer and fractional part as a tuple.
- **prefix()** (usize) - Returns the binary prefix index (0 to 8).
- **symbol()** (Option<&str>) - Returns the binary prefix symbol (e.g., "Ki").
- **factor()** (f64) - Returns the binary prefix factor (1 024 ^ 0 to 1 024 ^ 8).
```

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

### Trait Implementations

Source: https://docs.rs/signifix/0.10.1/signifix/metric/type.Result.html

Standard trait implementations for the Result type.

```APIDOC
## Trait Implementations

### Clone
- `clone(&self) -> Result<T, E>`: Returns a duplicate of the value.
- `clone_from(&mut self, source: &Result<T, E>)`: Performs copy-assignment from `source`.

### Debug
- `fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>`: Formats the value using the given formatter.

### FromIterator
- `FromIterator<Result<A, E>> for Result<V, E>`: Allows collection of results.
```

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

### Constant FACTORS

Source: https://docs.rs/signifix/0.10.1/signifix/metric/constant.FACTORS.html

Documentation for the FACTORS constant used for metric prefix scaling.

```APIDOC
## Constant: FACTORS

### Description
Metric prefix factors ranging from 1E-24 to 1E-03 (indices 0-7), 1E+00 (index 8), and 1E+03 to 1E+24 (indices 9-16).

### Definition
`pub const FACTORS: [f64; 17];`
```

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

### Signifix Methods

Source: https://docs.rs/signifix/0.10.1/signifix/metric/struct.Signifix.html

Methods available on the Signifix struct to access its components.

```APIDOC
## impl Signifix

### `fn significand(&self) -> f64`
Signed significand normalized from `±1.000` to `±999.9`.

### `fn numerator(&self) -> i32`
Signed significand numerator from `±1 000` to `±9 999`.

### `fn denominator(&self) -> i32`
Significand denominator of either `10`, `100`, or `1 000`.

### `fn exponent(&self) -> usize`
Exponent of significand denominator of either `1`, `2`, or `3`.

### `fn integer(&self) -> i32`
Signed integer part of significand from `±1` to `±999`.

### `fn fractional(&self) -> i32`
Fractional part of significand from `0` to `999`.

### `fn parts(&self) -> (i32, i32)`
Signed integer and fractional part at once, in given order.

### `fn prefix(&self) -> usize`
Metric prefix as `NAMES`, `SYMBOLS`, and `FACTORS` array index from `0` to `16`.

### `fn symbol(&self) -> Option<&str>`
Symbol of metric prefix from `Some("y")` to `Some("Y")`, or `None`.

### `fn factor(&self) -> f64`
Factor of metric prefix from `1E-24` to `1E+24`, or `1E+00`.

### `fn fmt(&self, f: &mut Formatter<'_>, decimal_mark: &str) -> Result`
Format trait implementation allowing explicit localization. Until there is a recommended and possibly implicit localization system for Rust, explicit localization can be achieved by wrapping the `Signifix` type into a locale-sensitive newtype which implements the `Display` trait via this method. Used by this type’s `Display` trait implementation with a decimal point as `decimal_mark`. The `decimal_mark` must be of a single character.
```

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

### Product Operation on Iterators

Source: https://docs.rs/signifix/0.10.1/signifix/type.Result.html

Demonstrates the `product` method for iterators yielding `Result` types. It computes the product of elements, short-circuiting on the first `Err`.

```APIDOC
## fn product<I>(iter: I) -> Result<T, E>

### Description
Takes each element in the `Iterator`: if it is an `Err`, no further elements are taken, and the `Err` is returned. Should no `Err` occur, the product of all elements is returned.

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Request Example
None

### Response
#### Success Response (200)
- **product** (Result<T, E>) - The product of all elements in the iterator, or the first Err encountered.

#### Response Example
```rust
let nums = vec!["5", "10", "1", "2"];
let total: Result<usize, _> = nums.iter().map(|w| w.parse::<usize>()).product();
assert_eq!(total, Ok(100));

let nums = vec!["5", "10", "one", "2"];
let total: Result<usize, _> = nums.iter().map(|w| w.parse::<usize>()).product();
assert!(total.is_err());
```
```

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

### impl<T, U, E> Product<Result<U, E>> for Result<T, E>

Source: https://docs.rs/signifix/0.10.1/signifix/binary/type.Result.html

Implementation of the Product trait for Result, allowing the product of an iterator of Results to be computed. If any element is an Err, that Err is returned.

```APIDOC
## Product Implementation for Result

### Description
This implementation allows computing the product of an iterator of `Result<U, E>` values, where the accumulator `T` also implements `Product<U>`. If any element in the iterator is an `Err`, that `Err` is returned immediately, short-circuiting the computation. If all elements are `Ok`, the product of the contained values is returned within an `Ok`.

### Method
`product` (from the `Product` trait)

### Endpoint
N/A (This is a trait implementation, not an HTTP endpoint)

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Request Example
```rust
// Example requires an iterator of Results and a type T that implements Product<U>
// For instance, if T is Result<i32, &str> and U is i32:

let values = vec![Ok(2), Ok(3), Ok(4)];
let product_result: Result<i32, &str> = values.into_iter().product();
assert_eq!(product_result, Ok(24));

let values_with_err = vec![Ok(2), Err("multiplication error"), Ok(4)];
let product_result_err: Result<i32, &str> = values_with_err.into_iter().product();
assert_eq!(product_result_err, Err("multiplication error"));
```

### Response
#### Success Response (200)
- **Result<T, E>** (type) - The product of the `Ok` values, or the first `Err` encountered.

#### Response Example
```rust
// See request example for detailed response values.
```
```

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

### impl<T, E, F> FromResidual<Yeet<E>> for Result<T, F>

Source: https://docs.rs/signifix/0.10.1/signifix/type.Result.html

Nightly-only experimental API for constructing a Result from a Yeet residual type.

```APIDOC
## fn from_residual(_: Yeet<E>) -> Result<T, F>

### Description
Nightly-only experimental API (`try_trait_v2`). Constructs the type from a compatible `Residual` type.

### Method
`from_residual`

### Endpoint
N/A (Implementation detail)

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Request Example
```rust
// Example usage would depend on the context of try_trait_v2
```

### Response
#### Success Response (200)
- **Result<T, F>** (type) - The constructed Result.

#### Response Example
```rust
// Example response would depend on the context of try_trait_v2
```
```

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

### Constant ALT_MAX_LEN

Source: https://docs.rs/signifix/0.10.1/signifix/metric/constant.ALT_MAX_LEN.html

Documentation for the ALT_MAX_LEN constant used in signifix::metric.

```APIDOC
## CONSTANT ALT_MAX_LEN

### Description
Defines the number of characters in alternate notation when a sign is prefixed.

### Value
6 (usize)
```