assert_ne in core - Rust
Description: Asserts that two expressions are not equal to each other (using `PartialEq`).

# Macro assert_ne

1.13.0 · Source

    macro_rules! assert_ne {
        ($left:expr, $right:expr $(,)?) => { ... };
        ($left:expr, $right:expr, $($arg:tt)+) => { ... };
    }

Expand description

Asserts that two expressions are not equal to each other (using `PartialEq`).

Assertions are always checked in both debug and release builds, and cannot be disabled. See `debug_assert_ne!` for assertions that are disabled in release builds by default.

On panic, this macro will print the values of the expressions with their debug representations.

Like `assert!`, this macro has a second form, where a custom panic message can be provided.

## §Examples

    let a = 3;
    let b = 2;
    assert_ne!(a, b);

    assert_ne!(a, b, "we are testing that the values are not equal");