Crate optifier 

Proc macro crate: Partial derive

Derive Partial on a struct Foo to generate a new struct named FooPartial where every field type is wrapped in Option<T> unless it is already an Option<T>. Only structs with named fields are accepted; tuple and unit structs are not supported yet.

Example:

#[optifier::partial_derive(Debug, Clone)]
#[derive(optifier::Partial)]
pub struct Foo {
    a: i32,
    b: Option<String>,
    pub c: Vec<u8>,
}

expands to:

#[derive(Debug, Clone)]
pub struct FooPartial {
    a: Option<i32>,
    b: Option<String>, // stays as-is
    pub c: Option<Vec<u8>>,
}

The #[optifier::partial_derive(...)] attribute controls which traits are derived for the generated *Partial type. It accepts a comma-separated list of trait paths.

Attribute Macros

partial_derive

Attribute macro to configure derives for the generated *Partial type.

Derive Macros

Partial

Derive macro to generate a *Partial variant of a struct with all fields wrapped in Option.