Macro custom_print::write

macro_rules! write {
    ( $macro:path, $writer:expr, expect $(, $($args:tt)*)? ) => { ... };
    ( $macro:path, $writer:expr, try $(, $($args:tt)*)? ) => { ... };
}

Calls another write macro with the specified writer, arguments and error-handling policy.

It propagates errors if the try policy is used.

Panics

The macro panics if writing fails and the expect policy is used.

Examples

use core::fmt::Write;
let mut string = String::new();

assert_eq!(custom_print::write!(writeln, &mut string, expect, "first"), ());
assert_eq!(string, "first\n");
assert_eq!(custom_print::write!(writeln, &mut string, try, "second"), Ok(()));
assert_eq!(string, "first\nsecond\n");