macro_rules! duration_option_display {
($convert:ident, $t:ty, $scale:tt) => { ... };
}
Expand description
Similar to duration_display
but $convert
returns an Option
macro_rules! duration_option_display {
($convert:ident, $t:ty, $scale:tt) => { ... };
}
Similar to duration_display
but $convert
returns an Option