# Macro std::concat 1.0.0 [−] [src]

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

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");Run

# Help

## Keyboard Shortcuts

?
  Show this help dialog
S
  Focus the search field
↑
  Move up in search results
↓
  Move down in search results
↹
  Switch tab
⏎
  Go to active search result
+ / -
  Collapse/expand all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g. `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g. `vec -> usize` or `* -> vec`)