Aleš Šturala | Blog | english version

I found a new simple feature in LINQ, if you need localy defined variable in your query then just use let keyword.
Sample - function returning only even double numbers:

  int[] list = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

  IEnumerable<int> x = from l in list
                       let dbl = l * l
                       where dbl % 2 == 0
                       select dbl;

          // result => 4, 16, 36, 64, 100