Derive Macro Keypath 

#[derive(Keypath)]

Derives a single keypath method for each struct field.

This macro generates a simplified set of keypath methods, creating only the most commonly used readable keypaths. It’s a lighter-weight alternative to Keypaths when you only need basic field access.

Generated Methods

For each field field_name, generates:

• field_name_r() - Returns a KeyPath<Struct, FieldType> for direct field access

Examples

use keypaths_proc::Keypath;

#[derive(Keypath)]
struct Point {
    x: f64,
    y: f64,
}

// Usage:
let point = Point { x: 1.0, y: 2.0 };
let x_path = Point::x_r();
let x_value = x_path.get(&point);  // &f64