core::write!

macro_rules! write {
    ($dst:expr, $($arg:tt)*) => ((&mut *$dst).write_fmt(format_args!($($arg)*)))
}

Use the format! syntax to write data into a buffer of type &mut Writer. See std::fmt for more information.

Example

fn main() { #![allow(unused_must_use)] let mut w = Vec::new(); write!(&mut w, "test"); write!(&mut w, "formatted {}", "arguments"); }

let mut w = Vec::new();
write!(&mut w, "test");
write!(&mut w, "formatted {}", "arguments");