Formats

The Display derive supports several built-in format modes. Each is specified as a flag in the #[moxy(display(...))] attribute.

Note

Format flags are mutually exclusive — only one of debug, compact, keyvalue, map, or json can be active at a time. Modifiers like pretty and color can be combined with any format.

Default

No attribute needed. Produces struct-literal style output with the type name, field names, and unquoted values:

use moxy::Display;

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

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

Debug

Wraps string values in quotes, similar to Rust’s Debug trait:

use moxy::Display;

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

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

Compact

Values only, space-separated. No type name, no field names, no punctuation:

use moxy::Display;

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

// John john@example.com

Key-Value

Field-value pairs separated by =, space-delimited:

use moxy::Display;

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

// name=John email=john@example.com

Map

Anonymous map style — like default but without the type name:

use moxy::Display;

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

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