write in std - Rust

macro_rules! write { ($dst:expr, $($arg:tt)*) => { ... }; }Expand description Writes formatted data into a buffer. This macro accepts a ‘writer’, a format string, and a list of arguments. Arguments will be formatted according to the specified format string and the result will be passed to the writer. The writer may be any value with a write_fmt method; generally this comes from an implementation o