Raise NoMatchingPatternError when expr in pat doesn't match
NoMatchingPatternError
in
expr in pattern
NoMatchingError
nil
[Feature #16355]
Raise
NoMatchingPatternError
when exprin
pat doesn't matchexpr in pattern
should raiseNoMatchingError
when unmatchedexpr in pattern
should returnnil
. (this is unspecified, butthis feature is experimental, at all)
[Feature #16355]