Map a function over the Edge labels in a graph.

Map a function over the Node labels in a graph.

Apply a function to the first element of an optional pair.

Filter based on edge label property.

Returns a new array derived from the original array by applying a function to each of the indices.

Returns a new array derived from the original array by applying a function to each of the elements.

Constructs a new array derived from the original array by applying a function to each of the elements.

Constructs a new array derived from the original array by applying a function to each of the indices.