Map3

Builds a new collection whose elements are the results of applying the given mapping function to the corresponding elements of the three collections simultaneously.

Parameters	Returns
Func<T, T2, T3, TResult> mapping IEnumerable<T> source IEnumerable<T2> source2 IEnumerable<T3> source3	IEnumerable<TResult>

Usage

Concatenating values from three collections

//IEnumerable<int> source = { 1, 2, 3, 4, 5 }
//IEnumerable<int> source2 = { 5, 3, 3, 3, 0 }
//IEnumerable<string> source3 = {"Value", "Value2" }

IEnumerable<string> result = 
    source.Map3(
        source2,
        source3, 
        (value1, value2, value3) => 
            $"{value3}: {value1 + value2}");

//result = { "Value: 6", "Value2: 5" }