Macro JOIN

macro_rules! JOIN {
    ($string_a:expr, $string_b:expr) => { ... };
}

Joins two strings together by appending the contents of string_b to string_a.

Parameters

• string_a: A mutable reference to the first string. Its contents will be modified.
• string_b: A mutable reference to the second string. Its contents will not be modified.

Return

This macro does not return a value. It modifies the contents of string_a in-place.