Function `parse_and_remainder`

fn parse_and_remainder<'a, 'b, I, B>(parsed: &mut Parsed, s: &'b str, items: I) -> ParseResult<&'b str>
where
    I: Iterator<Item = B>,
    B: Borrow<Item<'a>>

Tries to parse given string into parsed with given formatting items. Returns Ok with a slice of the unparsed remainder.

This particular date and time parser is:

Greedy. It will consume the longest possible prefix. For example, April is always consumed entirely when the long month name is requested; it equally accepts Apr, but prefers the longer prefix in this case.
Padding-agnostic (for numeric items). The Pad field is completely ignored, so one can prepend any number of zeroes before numbers.
(Still) obeying the intrinsic parsing width. This allows, for example, parsing HHMMSS.