Trait OptionalArgDefault 

pub trait OptionalArgDefault {
    const PY_DEFAULT: DefaultRepr;
}

Signature default of a field marked optional.

Only Option (None) and OptionalArg (<unrepresentable>) are valid.

Required Associated Constants

const PY_DEFAULT: DefaultRepr

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<T> OptionalArgDefault for Option<T>

const PY_DEFAULT: DefaultRepr = super::signature::DefaultRepr::None

Implementors

impl<T> OptionalArgDefault for OptionalArg<T>

const PY_DEFAULT: DefaultRepr = super::signature::DefaultRepr::Unrepresentable