take_while
Sequence.take_while
Lazily take the first elements of this Sequence for which predicate 'p' holds.
Postcondition
post
analysis: result ∀ p
analysis: {
n := nth result.count
!n || !(p n.or_panic)
}0.095dev (GIT hash 09dff08de289bbb6f7136c7e2f8c66dcc1856bba)