find_indices function
lfind_indices(P,
L) returns the list of indices of elements of L that satisfy P.
lExample:
find_indices(odd, [2, 4, 6, 7, 9, 8, 12, 13])
==> [3, 4, 7]
lExample:
find_indices(odd, [2, 4, 6, 7, 9, 8, 12, 13])
==> [3, 4, 7]