Works similarly to Array.findIndex (es6). It takes hyper-array
and a function that called with each item. It returns a hyper-value that equals to the id
of the first element in the array that satisfies the provided testing function. If no item is found
returned hyper-value equals to -1.
Works similarly to
Array.findIndex(es6). It takes hyper-array and a function that called with each item. It returns a hyper-value that equals to the id of the first element in the array that satisfies the provided testing function. If no item is found returned hyper-value equals to-1.