Hunt for an item in the container that satisfies
the predicate. Key is as in count-if.
search-for-match < abstract-bag/set-container > < t > |
search-for-match < array > < t > |
search-for-match < iteratable-container-mixin > < t > |
search-for-match < list > < t > |
search-for-match < vector > < t > |