.NET 4.0 Generics

Time for action – running a filter on a range

Assume that you want to find all the numbers in the previously-mentioned range that are multiples of 11. Here is how we can do that using Range() and Where():

1. Copy the following as a query to LINQPad:

   var multiplesOfEleven = Enumerable.Range(1, 100).Where(c => c % 11 == 0);
   multiplesOfEleven.Dump("Multiples of 11 from 1 to 100");

2. Run the query and you should get the following output:
   

What just happened?

Range() returned an IEnumerable<int> instance and that was passed to Where() as an input. Thus, Where() operates to find the numbers divisible by 11 and returns only those as the final IEnumerable<Int32> ...