std::ops::Not

Trait std::ops::Not

#[lang = "not"]
pub trait Not {
    type Output;
    fn not(self) -> Self::Output;
}

The unary logical negation operator !.

Examples

An implementation of Not for Answer, which enables the use of ! to invert its value.

use std::ops::Not;

#[derive(Debug, PartialEq)]
enum Answer {
    Yes,
    No,
}

impl Not for Answer {
    type Output = Answer;

    fn not(self) -> Answer {
        match self {
            Answer::Yes => Answer::No,
            Answer::No => Answer::Yes
        }
    }
}

assert_eq!(!Answer::Yes, Answer::No);
assert_eq!(!Answer::No, Answer::Yes);

Associated Types

Required Methods

Implementors

• impl Not for Wrapping<usize>
• impl Not for Wrapping<u8>
• impl Not for Wrapping<u16>
• impl Not for Wrapping<u32>
• impl Not for Wrapping<u64>
• impl Not for Wrapping<u128>
• impl Not for Wrapping<isize>
• impl Not for Wrapping<i8>
• impl Not for Wrapping<i16>
• impl Not for Wrapping<i32>
• impl Not for Wrapping<i64>
• impl Not for Wrapping<i128>
• impl<'a> Not for &'a Wrapping<usize>
• impl<'a> Not for &'a Wrapping<u8>
• impl<'a> Not for &'a Wrapping<u16>
• impl<'a> Not for &'a Wrapping<u32>
• impl<'a> Not for &'a Wrapping<u64>
• impl<'a> Not for &'a Wrapping<u128>
• impl<'a> Not for &'a Wrapping<isize>
• impl<'a> Not for &'a Wrapping<i8>
• impl<'a> Not for &'a Wrapping<i16>
• impl<'a> Not for &'a Wrapping<i32>
• impl<'a> Not for &'a Wrapping<i64>
• impl<'a> Not for &'a Wrapping<i128>
• impl Not for bool
• impl Not for usize
• impl Not for u8
• impl Not for u16
• impl Not for u32
• impl Not for u64
• impl Not for u128
• impl Not for isize
• impl Not for i8
• impl Not for i16
• impl Not for i32
• impl Not for i64
• impl Not for i128
• impl<'a> Not for &'a bool
• impl<'a> Not for &'a usize
• impl<'a> Not for &'a u8
• impl<'a> Not for &'a u16
• impl<'a> Not for &'a u32
• impl<'a> Not for &'a u64
• impl<'a> Not for &'a u128
• impl<'a> Not for &'a isize
• impl<'a> Not for &'a i8
• impl<'a> Not for &'a i16
• impl<'a> Not for &'a i32
• impl<'a> Not for &'a i64
• impl<'a> Not for &'a i128