tupleElementIndex(of:elementTypes:)

    Returns the element index that corresponnds to the given tuple element key path.

    static func tupleElementIndex<ElementTypes>(of keyPath: PartialKeyPath<T>, elementTypes: ElementTypes) -> Int? where ElementTypes : Collection, ElementTypes.Element == any Any.Type

    Parameters

    keyPath

    The key path from a tuple to one of its elements.

    elementTypes

    The element type of the tuple type.