count the number of elements in this Sequence that match the given predicate. Note that this typically runs forever if executed on an endless Sequence.
0.095dev (2025-09-09 14:29:31 GIT hash 98644f8f651c2101a0730cfe31c5807993b7603b built by fridi@fzen)
given predicate. Note that this typically
runs forever if executed on an endless Sequence.