Macro define_try_println 

macro_rules! define_try_println {
    ( $( #[$meta:meta] )* $name:ident, $( $args:tt )* ) => { ... };
}

Defines try_println macro that defines a fallible println macro that uses the specified writer.

The first argument specifies the generated macro name. The writer itself is specified by the rest arguments with the define_writer macros.

See also define_println and define_try_print macros.

Examples

let mut string = String::new();
custom_print::define_try_println!(try_println, fmt, |value: &str| string += value);

assert_eq!(try_println!("value"), Ok(()));
assert_eq!(string, "value\n");