# Macro std::concat

1.0.0 · source ·

    macro_rules! concat {
        ($($e:expr),* $(,)?) => { ... };
    }

Expand description

Concatenates literals into a static string slice.

This macro takes any number of comma-separated literals, yielding an expression of type `&'static str` which represents all of the literals concatenated left-to-right.

Integer and floating point literals are stringified in order to be concatenated.

## Examples

    let s = concat!("test", 10, 'b', true);
    assert_eq!(s, "test10btrue");

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