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