Module with_builtin_macros::builtin_macros::concat

See the stdlib documentation.

Example

use ::with_builtin_macros::with_builtin;
macro_rules! expect_hello_world {
    ("Hello, World!") => ();
}

with_builtin!(let $msg = concat!("Hello, ", "World!") in {
    expect_hello_world!($msg);
});