core::assert_eq - Rust
Description: API documentation for the Rust `assert_eq` macro in crate `core`.
Keywords: rust, rustlang, rust-lang, assert_eq

# Macro core::assert_eq 1.0.0 [−] [src]

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

Asserts that two expressions are equal to each other (using `PartialEq`).

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 = 1 + 2;
    assert_eq!(a, b);

    assert_eq!(a, b, "we are testing addition with {} and {}", a, b);Run

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