Trait DecrementMut 

pub trait DecrementMut {
    type Output;

    // Required method
    fn dec_mut(&mut self) -> Self::Output;
}

DecrementMut is a trait describing the ability to decrement a value in place. It is similar to Decrement, but it allows for mutable access to the value.

note: the automatic implementation of DecrementMut leverages the replace method to compute the next value, replacing and returning the previous value.

Required Associated Types

type Output

Required Methods

fn dec_mut(&mut self) -> Self::Output

Dyn Compatibility

This trait is dyn compatible.

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

Implementors

impl<S> DecrementMut for S

where S: One, for<'a> &'a S: Sub<S, Output = S>,

type Output = S