Map

Builds a new collection whose elements are the results of applying the given mapping function to each of the elements of the collection.

It works just like Select method of System.Linq.

Parameters	Returns
Func<T, TResult> mapping IEnumerable<T> source	IEnumerable<TResult>

Usage

Multiplying the values by two

//IEnumerable<int> source = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }

IEnumerable<int> result = source.Map(value => value * 2);

//result = { 2, 4, 6, 8, 10, 12, 14, 16, 18, 20 }