Checks whether needle exists in haystack. If the element is found, TRUE is
returned and the element’s index is returned in index_ (if non-NULL).
Otherwise, FALSE is returned and index_ is undefined. If needle exists
multiple times in haystack, the index of the first instance is returned.
This does pointer comparisons only. If you want to use more complex equality
checks, such as string comparisons, use PtrArray.findWithEqualFunc.
Checks whether needle exists in haystack. If the element is found, TRUE is returned and the element’s index is returned in index_ (if non-NULL). Otherwise, FALSE is returned and index_ is undefined. If needle exists multiple times in haystack, the index of the first instance is returned.
This does pointer comparisons only. If you want to use more complex equality checks, such as string comparisons, use PtrArray.findWithEqualFunc.