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 (2025-07-10 15:41:47 GIT hash eafa42ae743de61b62f958948d7abb5fada7756f built by fridi@fzen)
given predicate. Note that this typically
runs forever if executed on an endless Sequence.