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opt

time::parsing::combinator

Function opt 

Source 
pub(crate) fn opt<T>(
    parser: impl for<'a> Fn(&'a [u8]) -> Option<ParsedItem<'a, T>>,
) -> impl for<'a> Fn(&'a [u8]) -> ParsedItem<'a, Option<T>>
Available on crate feature parsing only.
Expand description

Optionally consume an input with a given parser.