Trait IsDefault 

pub trait IsDefault {
    // Required method
    fn is_default(&self) -> bool;
}

Trait defining instance method is_default() : bool that allows a type instance to indicate whether it holds the “default” value.

Required Methods

fn is_default(&self) -> bool

Implementations on Foreign Types

impl<T: IsDefault + ?Sized> IsDefault for Box<T>

Available on non-crate feature nostd only.

fn is_default(&self) -> bool

impl<T: IsDefault + ?Sized> IsDefault for Rc<T>

Available on non-crate feature nostd only.

fn is_default(&self) -> bool

Implementors