macro_rules! format {
( $ ( $ arg : tt ) * ) => { ... };
} Use the syntax described in std::fmt to create a value of type String. See std::fmt for more information.
format!("test");
format!("hello {}", "world!");
format!("x = {}, y = {y}", 10, y = 30);
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Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/macro.format.html