Function indexOf

indexOf<T>(
    data: T[],
    sought: T,
    start?: number,
    end?: number,
    comparer?: Comparer<T>,
): number
Returns index of data in an ascended sorted array using a binary search. Returns -1 if data was not found.
```
indexOf([1,2,3], 3); // 2
indexOf([1,2,3], 0); // -1, not found
```
By default uses Javascript comparision semantics. Passing in comparer is needed when working with an array of objects.
Type Parameters
- T
Parameters
- data: T[]
  Array of data
- sought: T
  Item to search for
- start: number = 0
  Start point
- end: number = data.length
  End index
- comparer: Comparer<T> = defaultComparer
  Comparer (by default uses JS semantics)
Returns number
Index of sought item or -1 if not found.