Macro count_args

macro_rules! count_args {
    () => { ... };
    ( $arg:expr ) => { ... };
    ( $arg:expr, $( $rest:expr ),* ) => { ... };
}

Counts the number of args passed to this macro invocation.

Returns the count as usize.

Examples

#[macro_use] extern crate colmac;

assert_eq!(0, count_args!());
assert_eq!(1, count_args!("one"));
assert_eq!(3, count_args!("one", "two", "three"));