GenericExtensionsBinarySearchRO Method

Overload List

BinarySearchROT, TKey(IReadOnlyListT, FuncT, TKey, TKey) Searches the entire sorted IReadOnlyListT for an element and returns the zero-based index of the element.

If the key is not found, a negative number is returned, which can be intepreted as the bitwise complement of the interval of indices that the key is in between, i.e. list[interval-1] < key < list[interval]

This differs from the "ordinary" binary search in allowing a keySelectorcomparer that knows how to compare a class with its key. Example, if the list contains classes of type T having an id number and the class is sorted on that id, then the keySelector returns the id number for that class.

BinarySearchROT, TKey(IReadOnlyListT, FuncT, TKey, TKey, IComparerTKey) Searches the entire sorted IReadOnlyListT for an element using the provided comparer and returns the zero-based index of the element.

If the key is not found, a negative number is returned, which can be intepreted as the bitwise complement of the interval of indices that the key is in between, i.e. list[interval-1] < key < list[interval]

This differs from the "ordinary" binary search in allowing a keySelectorcomparer that knows how to compare a class with its key. Example, if the list contains classes of type T having an id number and the class is sorted on that id, then the keySelector returns the id number for that class.

See Also