pub fn occurs(
environment: &mut SloshVm,
haystack: Value,
needle: Value,
) -> VMResult<u64>Expand description
Usage: (occurs (list 1 2 …) 7)
Counts instances of item in sequence.
Section: core
Example: (test::assert-equal 1 (occurs (list 1 3 5 2 4 8 2 4 88 2 1) 8)) (test::assert-equal 3 (occurs (list 1 3 5 2 4 10 2 4 88 2 1) 2)) (test::assert-equal 0 (occurs (list 1 3 5 2 4 10 2 4 88 2 1) 42))