Element type stored in the array.
Sorted array to search.
Numeric value to match.
Projects each element to its comparable numeric value.
The matching index, or -1 when no element matches.
The input array must already be sorted in ascending order by the numeric
value returned from callback. If multiple elements project to the same
value, any matching index may be returned.
Finds the index of an item whose projected numeric value equals
searchValue.