### Expected Output of Basic Example

Source: https://maud.lambda.xyz/getting-started.html

The rendered HTML output from the basic Maud program.

```text
<p>Hi, Lyra!</p>

```

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

### Basic Maud HTML Rendering Example

Source: https://maud.lambda.xyz/getting-started.html

A minimal Rust program demonstrating how to use the `maud::html!` macro to create and render an HTML string. The `html!` macro expands to a `Markup` type, which can be converted to a `String`.

```rust
use maud::html;

fn main() {
    let name = "Lyra";
    let markup = html! {
        p { "Hi, " (name) "!" }
    };
    println!("{}", markup.into_string());
}

```

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

### Render a Page Using Composed Markup

Source: https://maud.lambda.xyz/partials.html

Demonstrates how to use the `page` function to render the complete HTML structure, including dynamic content passed as Markup. This shows the practical application of the composed components.

```rust
page("Hello!", html! {
    div { "Greetings, Maud." }
});

```

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

### Create a New Rust Project

Source: https://maud.lambda.xyz/getting-started.html

Use Cargo to create a new binary Rust project. This sets up the basic project structure.

```bash
cargo new --bin pony-greeter
cd pony-greeter

```

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

### Basic HTML Structure with Maud Macro

Source: https://maud.lambda.xyz/

This snippet demonstrates the basic syntax of the `html!` macro for creating HTML elements and text content. It shows how to define a heading and a paragraph with a link.

```rust
html! {
    h1 { "Hello, world!" }
    p.intro {
        "This is an example of the "
        a href="https://github.com/lambda-fairy/maud" { "Maud" }
        " template language."
    }
}

```

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

### Using Classes and IDs

Source: https://maud.lambda.xyz/elements-attributes.html

Add classes and IDs using `.foo` and `#bar` syntax, which can be chained and mixed with other attributes. For Rust 2021 and later, `#` must be preceded by a space.

```rust
html! {
    input #cannon .big.scary.bright-red type="button" value="Launch Party Cannon";
}


```

```rust
html! {
    // Works on all Rust editions
    input #pinkie;

    // Works on Rust 2018 and older only
    input#pinkie;
}


```

```rust
html! {
    div."col-sm-2" { "Bootstrap column!" }
}


```

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

### Define and Compose Header, Footer, and Page Markup

Source: https://maud.lambda.xyz/partials.html

Defines reusable header and footer components and a main page component that composes them. Use this pattern to build complex UIs from smaller, manageable parts.

```rust
use maud::{DOCTYPE, html, Markup};

/// A basic header with a dynamic `page_title`.
fn header(page_title: &str) -> Markup {
    html! {
        (DOCTYPE)
        meta charset="utf-8";
        title { (page_title) }
    }
}

/// A static footer.
fn footer() -> Markup {
    html! {
        footer {
            a href="rss.atom" { "RSS Feed" }
        }
    }
}

/// The final Markup, including `header` and `footer`.
///
/// Additionally takes a `greeting_box` that's `Markup`, not `&str`.
pub fn page(title: &str, greeting_box: Markup) -> Markup {
    html! {
        // Add the header markup to the page
        (header(title))
        h1 { (title) }
        (greeting_box)
        (footer())
    }
}

```

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

### Axum Integration with Maud

Source: https://maud.lambda.xyz/web-frameworks.html

Demonstrates returning Maud's `Markup` directly as a response in an Axum application. This utilizes the 'axum' feature for `IntoResponse` implementation.

```rust
use maud::{html, Markup};
use axum::{Router, routing::get};

async fn hello_world() -> Markup {
    html! {
        h1 { "Hello, World!" }
    }
}

#[tokio::main]
async fn main() {
    // build our application with a single route
    let app = Router::new().route("/", get(hello_world));

    // run it with hyper on localhost:3000
    let listener = tokio::net::TcpListener::bind("0.0.0.0:3000").await.unwrap();

    axum::serve(listener, app.into_make_service()).await.unwrap();
}

```

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

### Rouille Integration with Maud

Source: https://maud.lambda.xyz/web-frameworks.html

Demonstrates how to directly use Maud's rendered HTML as a response in Rouille. No extra features are required.

```rust
use maud::html;
use rouille::{Response, router};

fn main() {
    rouille::start_server("localhost:8000", move |request| {
        router!(request,
            (GET) (/{name: String}) => {
                Response::html(html! {
                    h1 { "Hello, " (name) "!" }
                    p { "Nice to meet you!" }
                })
            },
            _ => Response::empty_404()
        )
    });
}

```

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

### Submillisecond Route Returning Maud Markup

Source: https://maud.lambda.xyz/web-frameworks.html

Shows how to define a Submillisecond route that returns Maud's HTML markup directly as a response.

```rust
use maud::{html, Markup};
use std::io::Result;
use submillisecond::{router, Application};

fn main() -> Result<()> {
    Application::new(router! {

        GET "/hello" => helloworld
    })
    .serve("0.0.0.0:3000")
}

fn helloworld() -> Markup {
    html! {
        h1 { "Hello, World!" }
    }
}

```

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

### Creating Elements with Content

Source: https://maud.lambda.xyz/elements-attributes.html

Use curly braces `{}` to define elements that contain other elements or text. This is the standard way to build nested HTML structures.

```rust
html! {
    h1 { "Poem" }
    p {
        strong { "Rock," }
        " you are a rock."
    }
}


```

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

### Shorthand for Including CSS Stylesheets

Source: https://maud.lambda.xyz/render-trait.html

Implement `Render` for a `Css` struct to create a shorthand for linking CSS stylesheets, reducing repetitive HTML.

```rust
use maud::{html, Markup, Render};

/// Links to a CSS stylesheet at the given path.
struct Css(&'static str);

impl Render for Css {
    fn render(&self) -> Markup {
        html! {
            link rel="stylesheet" type="text/css" href=(self.0);
        }
    }
}

```

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

### Tide Integration with Maud

Source: https://maud.lambda.xyz/web-frameworks.html

Illustrates using Maud's `html!` macro to generate responses directly within a Tide web application. Requires the 'tide' feature.

```rust
use maud::html;
use tide::Request;
use tide::prelude::*;

#[async_std::main]
async fn main() -> tide::Result<()> {
    let mut app = tide::new();
    app.at("/hello/:name").get(|req: Request<()>| async move {
        let name: String = req.param("name")?.parse()?;
        Ok(html! {
            h1 { "Hello, " (name) "!" }
            p { "Nice to meet you!" }
        })
    });
    app.listen("127.0.0.1:8080").await?;
    Ok(())
}

```

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

### Actix Request Handler with Maud Markup

Source: https://maud.lambda.xyz/web-frameworks.html

Demonstrates an Actix request handler returning Maud's Markup, which implements actix_web::Responder.

```rust
use actix_web::{get, App, HttpServer, Result as AwResult};
use maud::{html, Markup};
use std::io;

#[get("/")]
async fn index() -> AwResult<Markup> {
    Ok(html! {
        html {
            body {
                h1 { "Hello World!" }
            }
        }
    })
}

#[actix_web::main]
async fn main() -> io::Result<()> {
    HttpServer::new(|| App::new().service(index))
        .bind(("127.0.0.1", 8080))?
        .run()
        .await
}

```

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

### Warp Handler Returning Maud Markup

Source: https://maud.lambda.xyz/web-frameworks.html

Demonstrates a Warp handler that directly returns Maud's HTML markup as a warp::Reply.

```rust
use maud::html;
use warp::Filter;

#[tokio::main]
async fn main() {
    let hello = warp::any().map(|| html! { h1 { "Hello, world!" } });
    warp::serve(hello).run(([127, 0, 0, 1], 8000)).await;
}

```

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

### Markdown Rendering with `pulldown-cmark` and `ammonia`

Source: https://maud.lambda.xyz/render-trait.html

Implement `Render` for a `Markdown` struct to convert Markdown text to sanitized HTML using `pulldown-cmark` for parsing and `ammonia` for security.

```rust
use ammonia;
use maud::{Markup, PreEscaped, Render};
use pulldown_cmark::{Parser, html};

/// Renders a block of Markdown using `pulldown-cmark`.
struct Markdown<T>(T);

impl<T: AsRef<str>> Render for Markdown<T> {
    fn render(&self) -> Markup {
        // Generate raw HTML
        let mut unsafe_html = String::new();
        let parser = Parser::new(self.0.as_ref());
        html::push_html(&mut unsafe_html, parser);
        // Sanitize it with ammonia
        let safe_html = ammonia::clean(&unsafe_html);
        PreEscaped(safe_html)
    }
}

```

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

### Add Maud Dependency to Cargo.toml

Source: https://maud.lambda.xyz/getting-started.html

Specify the Maud crate as a dependency in your project's Cargo.toml file. The asterisk (*) indicates the latest compatible version.

```toml
[dependencies]
maud = "*"

```

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

### Add Actix-web Feature for Maud

Source: https://maud.lambda.xyz/web-frameworks.html

Include the 'actix-web' feature in your Cargo.toml to enable Maud integration with Actix.

```toml
# ...
[dependencies]
maud = { version = "*", features = ["actix-web"] }
# ...

```

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

### Rocket Route Returning Maud Markup

Source: https://maud.lambda.xyz/web-frameworks.html

Shows a Rocket route handler that directly returns Maud's Markup, leveraging its Responder implementation.

```rust
use maud::{html, Markup};
use rocket::{get, routes};
use std::borrow::Cow;

#[get("/<name>")]
fn hello(name: &str) -> Markup {
    html! {
        h1 { "Hello, " (name) "!" }
        p { "Nice to meet you!" }
    }
}

#[rocket::launch]
fn launch() -> _ {
    rocket::build().mount("/", routes![hello])
}

```

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

### Tide Feature for Maud

Source: https://maud.lambda.xyz/web-frameworks.html

Shows the Cargo.toml dependency for enabling Tide support in Maud. This allows returning Maud's HTML directly as a Tide response.

```toml
# ...
[dependencies]
maud = { version = "*", features = ["tide"] }
# ...

```

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

### Poem Handler Returning Maud Markup

Source: https://maud.lambda.xyz/web-frameworks.html

Illustrates a Poem handler that returns Maud's HTML markup, which is automatically converted into a Poem response.

```rust
use maud::{html, Markup};
use poem::{get, handler, listener::TcpListener, Route, Server};

#[handler]
fn hello_world() -> Markup {
    html! {
        h1 { "Hello, World!" }
    }
}

#[tokio::main]
async fn main() -> Result<(), std::io::Error> {
    let app = Route::new().at("/hello", get(hello_world));
    Server::new(TcpListener::bind("0.0.0.0:3000"))
        .name("hello-world")
        .run(app)
        .await
}

```

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

### Enable Submillisecond Feature for Maud

Source: https://maud.lambda.xyz/web-frameworks.html

Add the 'submillisecond' feature to your Maud dependency in Cargo.toml to enable Submillisecond integration.

```toml
# ...
[dependencies]
maud = { version = "*", features = ["submillisecond"] }
# ...

```

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

### Enable Warp Feature for Maud

Source: https://maud.lambda.xyz/web-frameworks.html

Add the 'warp' feature to your Maud dependency in Cargo.toml to enable Warp integration.

```toml
# ...
[dependencies]
maud = { version = "*", features = ["warp"] }
# ...

```

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

### Enable Poem Feature for Maud

Source: https://maud.lambda.xyz/web-frameworks.html

Add the 'poem' feature to your Maud dependency in Cargo.toml to enable Poem integration.

```toml
# ...
[dependencies]
maud = { version = "*", features = ["poem"] }
# ...

```

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

### Pattern Matching with @match

Source: https://maud.lambda.xyz/control-structures.html

Implement exhaustive pattern matching using the @match construct, similar to Rust's match expressions. This allows for complex conditional logic based on enumerated types or other patterns.

```rust
enum Princess { Celestia, Luna, Cadance, TwilightSparkle }

let user = Princess::Celestia;

html! {
    @match user {
        Princess::Luna => {
            h1 { "Super secret woona to-do list" }
            ul {
                li { "Nuke the Crystal Empire" }
                li { "Kick a puppy" }
                li { "Evil laugh" }
            }
        },
        Princess::Celestia => {
            p { "Sister, please stop reading my diary. It's rude." }
        },
        _ => p { "Nothing to see here; move along." }
    }
}


```

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

### Looping with @for

Source: https://maud.lambda.xyz/control-structures.html

Iterate over elements of an iterator using the @for .. in .. syntax. This is suitable for rendering lists or collections dynamically.

```rust
let names = ["Applejack", "Rarity", "Fluttershy"];
html! {
    p { "My favorite ponies are:" }
    ol {
        @for name in &names {
            li { (name) }
        }
    }
}


```

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

### Axum Feature for Maud

Source: https://maud.lambda.xyz/web-frameworks.html

Shows the Cargo.toml dependency for enabling Axum support in Maud. This allows Maud's output to be used directly with Axum's `IntoResponse` trait.

```toml
# ...
[dependencies]
maud = { version = "*", features = ["axum"] }
# ...

```

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

### Adding Non-Empty Attributes

Source: https://maud.lambda.xyz/elements-attributes.html

Attach attributes to elements using the `attr="value"` syntax. Attribute values must be quoted string literals.

```rust
html! {
    ul {
        li {
            a href="about:blank" { "Apple Bloom" }
        }
        li class="lower-middle" {
            "Sweetie Belle"
        }
        li dir="rtl" {
            "Scootaloo "
            small { "(also a chicken)" }
        }
    }
}


```

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

### Defining Void Elements

Source: https://maud.lambda.xyz/elements-attributes.html

Terminate void elements, such as `<br>`, using a semicolon `;`. This ensures they are rendered correctly in HTML.

```rust
html! {
    link rel="stylesheet" href="poetry.css";
    p {
        "Rock, you are a rock."
        br;
        "Gray, you are gray,"
        br;
        "Like a rock, which you are."
        br;
        "Rock."
    }
}


```

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

### Wrapper for `std::fmt::Debug` Rendering

Source: https://maud.lambda.xyz/render-trait.html

Use a `Debug` wrapper struct that implements `Render` to display internal state using the `Debug` trait when `Display` is not available. Overrides `.render_to()` for efficiency and uses `Escaper` to prevent XSS vulnerabilities.

```rust
use maud::{Escaper, html, Render};
use std::fmt;
use std::fmt::Write as _;

/// Renders the given value using its `Debug` implementation.
struct Debug<T: fmt::Debug>(T);

impl<T: fmt::Debug> Render for Debug<T> {
    fn render_to(&self, output: &mut String) {
        let mut escaper = Escaper::new(output);
        write!(escaper, "{{:?}}", self.0).unwrap();
    }
}

```

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

### Using DOCTYPE Constant for HTML Declaration

Source: https://maud.lambda.xyz/text-escaping.html

Insert a `<!DOCTYPE html>` declaration using the `maud::DOCTYPE` constant for standard HTML5 document type.

```rust
use maud::DOCTYPE;
html! {
    (DOCTYPE)  // <!DOCTYPE html>
}

```

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

### Conditional Branching with @if, @else if, and @else

Source: https://maud.lambda.xyz/control-structures.html

Use @if, @else if, and @else for conditional rendering based on boolean expressions. Braces are mandatory, and the @else clause is optional. This mirrors Rust's if-else if-else syntax.

```rust
#[derive(PartialEq)]
enum Princess { Celestia, Luna, Cadance, TwilightSparkle }

let user = Princess::Celestia;

html! {
    @if user == Princess::Luna {
        h1 { "Super secret woona to-do list" }
        ul {
            li { "Nuke the Crystal Empire" }
            li { "Kick a puppy" }
            li { "Evil laugh" }
        }
    } @else if user == Princess::Celestia {
        p { "Sister, please stop reading my diary. It's rude." }
    } @else {
        p { "Nothing to see here; move along." }
    }
}


```

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

### Basic Splice Usage

Source: https://maud.lambda.xyz/splices-toggles.html

Insert dynamic string values and computed values into HTML elements. HTML special characters are escaped by default.

```rust
let best_pony = "Pinkie Pie";
let numbers = [1, 2, 3, 4];
html! {
    p { "Hi, " (best_pony) "!" }
    p {
        "I have " (numbers.len()) " numbers, "
        "and the first one is " (numbers[0])
    }
}

```

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

### Toggle Classes

Source: https://maud.lambda.xyz/splices-toggles.html

Conditionally apply CSS classes to HTML elements based on a Rust boolean expression. The class is added only if the expression evaluates to true.

```rust
let cuteness = 95;
html! {
    p.cute[cuteness > 50] { "Squee!" }
}

```

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

### Variable Declaration with @let in Loops

Source: https://maud.lambda.xyz/control-structures.html

Declare new variables within a template scope using @let. This is particularly useful inside @for loops for intermediate calculations or transformations.

```rust
let names = ["Applejack", "Rarity", "Fluttershy"];
html! {
    @for name in &names {
        @let first_letter = name.chars().next().unwrap();
        p {
            "The first letter of "
            b { (name) }
            " is "
            b { (first_letter) }
            "."
        }
    }
}


```

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

### Splices in Classes and IDs

Source: https://maud.lambda.xyz/splices-toggles.html

Dynamically set HTML element classes and IDs using splices. This allows for conditional styling or element identification.

```rust
let name = "rarity";
let severity = "critical";
html! {
    aside #(name) {
        p.{ "color-" (severity) } { "This is the worst! Possible! Thing!" }
    }
}

```

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

### Add Rocket Feature for Maud

Source: https://maud.lambda.xyz/web-frameworks.html

Include the 'rocket' feature in your Cargo.toml to enable Maud integration with Rocket.

```toml
# ...
[dependencies]
maud = { version = "*", features = ["rocket"] }
# ...

```

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

### Optional Attributes with Values

Source: https://maud.lambda.xyz/splices-toggles.html

Render optional attributes using `attr=[Some(value)]` syntax. The attribute is rendered only if the value is `Some(T)`, and omitted if it's `None`.

```rust
html! {
    p title=[Some("Good password")] { "Correct horse" }

    @let value = Some(42);
    input value=[value];

    @let title: Option<&str> = None;
    p title=[title] { "Battery staple" }
}

```

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

### Raw String for Long or Special Character Content

Source: https://maud.lambda.xyz/text-escaping.html

Employ raw strings (prefixed with `r#"`) for lengthy strings or those with numerous special characters to avoid manual escaping.

```rust
html! {
    pre {
        r#"                    
            Rocks, these are my rocks.
            Sediments make me sedimental.
            Smooth and round,
            Asleep in the ground.
            Shades of brown
            And gray.
        "#
    }
}

```

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

### Splicing Pre-Escaped Content

Source: https://maud.lambda.xyz/splices-toggles.html

Use the `PreEscaped` wrapper to insert HTML content directly without escaping. This is useful for rendering pre-formatted HTML strings.

```rust
use maud::PreEscaped;
let post = "<p>Pre-escaped</p>";
html! {
    h1 { "My super duper blog post" }
    (PreEscaped(post))
}

```

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

### Declaring Empty Attributes

Source: https://maud.lambda.xyz/elements-attributes.html

Declare an empty attribute by omitting its value. Previously, a `?` suffix was required, but this is no longer necessary for new code.

```rust
html! {
    form {
        input type="checkbox" name="cupcakes" checked;
        " "
        label for="cupcakes" { "Do you like cupcakes?" }
    }
}


```

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

### Conditional Let Binding with @if let

Source: https://maud.lambda.xyz/control-structures.html

Supports @if let for handling optional values or pattern matching within conditional blocks. The @else clause provides a fallback when the pattern does not match.

```rust
let user = Some("Pinkie Pie");
html! {
    p {
        "Hello, "
        @if let Some(name) = user {
            (name)
        } @else {
            "stranger"
        }
        "!"
    }
}


```

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

### Custom Elements and Data Attributes

Source: https://maud.lambda.xyz/elements-attributes.html

Maud supports elements and attributes with hyphens, including custom elements, data attributes (e.g., `data-index`), and ARIA annotations.

```rust
html! {
    article data-index="12345" {
        h1 { "My blog" }
        tag-cloud { "pinkie pie pony cute" }
    }
}


```

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

### Concatenating Values in Attributes

Source: https://maud.lambda.xyz/splices-toggles.html

Wrap multiple values in braces within an attribute to concatenate them. This is useful for constructing URLs or complex attribute values.

```rust
const GITHUB: &'static str = "https://github.com";
html! {
    a href={ (GITHUB) "/lambda-fairy/maud" } {
        "Fork me on GitHub"
    }
}

```

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

### Toggle Boolean Attributes

Source: https://maud.lambda.xyz/splices-toggles.html

Conditionally render boolean HTML attributes based on a Rust boolean expression. The attribute is added only if the expression evaluates to true.

```rust
let allow_editing = true;
html! {
    p contenteditable[allow_editing] {
        "Edit me, I "
        em { "dare" }
        " you."
    }
}

```

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

### Literal String in Maud

Source: https://maud.lambda.xyz/text-escaping.html

Use double quotes for literal strings in Maud, similar to Rust. Backslashes are used for escape sequences.

```rust
html! {
    "Oatmeal, are you crazy?"
}

```

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

### Implicit Div Elements

Source: https://maud.lambda.xyz/elements-attributes.html

If an element name is omitted but a class or ID is provided, Maud assumes it is a `div` element.

```rust
html! {
    #main {
        "Main content!"
        .tip { "Storing food in a refrigerator can make it 20% cooler." }
    }
}


```

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

### Splice with Arbitrary Rust Code

Source: https://maud.lambda.xyz/splices-toggles.html

Use Rust code blocks within splices for complex expressions that are difficult to read inline. Ensure the code block returns a value that implements the `Render` trait.

```rust
html! {
    p {
        ({
            let f: Foo = something_convertible_to_foo()?;
            f.time().format("%H%Mh")
        })
    }
}

```

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

### Splice in HTML Attributes

Source: https://maud.lambda.xyz/splices-toggles.html

Insert dynamic string values into HTML attributes. The value is automatically escaped.

```rust
let secret_message = "Surprise!";
html! {
    p title=(secret_message) {
        "Nothing to see here, move along."
    }
}

```

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

### Disabling HTML Escaping with PreEscaped

Source: https://maud.lambda.xyz/text-escaping.html

Wrap strings in `PreEscaped()` to prevent Maud from automatically escaping HTML special characters. This is useful for including raw HTML or script content.

```rust
use maud::PreEscaped;
html! {
    "<script>alert(\"XSS\")</script>"                // &lt;script&gt;...
    (PreEscaped("<script>alert(\"XSS\")</script>"))  // <script>...
}

```

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