LengthWhile

LengthWhile({e1, e2, ...}, head)

returns the number of elements ei at the start of list for which head(ei) returns True.

Examples

>> LengthWhile({1, 2, 3, 10, 5, 8, 42, 11}, # < 10 &)
3

Implementation status

• ✅ - full supported

Github

• Implementation of LengthWhile