This crate provides the concat_string! macro for efficiently concatenating string slices into owned strings. concat_string! accepts any number of arguments that implement AsRef<str> and creates a String with the appropriate capacity, without the need for format strings and their associated runtime overhead.

#[macro_use(concat_string)]
extern crate concat_string;

fn main() {
    println!("{}", concat_string!("Hello", String::from(" "), "world"));
}

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.