Macro clap::_clap_count_exprs
source · macro_rules! _clap_count_exprs { () => { ... }; ($e:expr) => { ... }; ($e:expr, $($es:expr),+) => { ... }; }
Expand description
Counts the number of comma-delimited expressions passed to it. The result is a compile-time
evaluable expression, suitable for use as a static array size, or the value of a const
.
Examples
const COUNT: usize = _clap_count_exprs!(a, 5+1, "hi there!".into_string());
assert_eq!(COUNT, 3);