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.
0.094dev (2025-06-18 15:08:51 GIT hash 89cffc23ae669b0898a5564fefbf793fcb8e5ca7 built by fridi@fzen)
given predicate. Note that this typically
runs forever if executed on an endless Sequence.