MapIndexed2

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

The integer index passed to the function indicates the index (from 0) of element being transformed.

Parameters	Returns
Func<int, T, T2, TResult> mapping IEnumerable<T> source IEnumerable<T2> source2	IEnumerable<TResult>

Usage

Multiplying the sum of each pair of values by its index

//IEnumerable<int> source =  { 1, 2, 3 }
//IEnumerable<int> source2 = { 4, 5, 6 }

IEnumerable<int> result = 
    source.MapIndexed2(
        source2, 
        (index, value1, value2) => (value1 + value2) * index);

//result = { 0, 7, 18}