Struct Types

The Display derive works with named structs, tuple structs, and unit structs. Each struct type has its own output style.

Named Structs

The most common case. Fields are displayed with their names:

use moxy::Display;

#[derive(Display)]
struct User {
    name: String,
    email: String,
}

// User { name: John, email: john@example.com }

All format modes, pretty printing, field attributes, and modifiers work with named structs.

Tuple Structs

Tuple struct fields are displayed positionally inside parentheses:

use moxy::Display;

#[derive(Display)]
struct Pair(String, i32);

let pair = Pair("hello".into(), 42);
// Pair(hello, 42)

With Debug

use moxy::Display;

#[derive(Display)]
#[moxy(display(debug))]
struct Pair(String, i32);

// Pair("hello", 42)

With Compact

use moxy::Display;

#[derive(Display)]
#[moxy(display(compact))]
struct Pair(String, i32);

// hello 42

With Pretty

use moxy::Display;

#[derive(Display)]
#[moxy(display(pretty))]
struct Pair(String, i32);

// Pair(
//     hello,
//     42,
// )

Unit Structs

Unit structs display as just their type name:

use moxy::Display;

#[derive(Display)]
struct Marker;

assert_eq!(format!("{}", Marker), "Marker");