C# in Depth

Appendix . LINQ standard query operators

There are many standard query operators in LINQ, only some of which are supported directly in C# query expressions—the others have to be called “manually” as normal methods. Some of the standard query operators are demonstrated in the main text of the book, but they’re all listed in this appendix. For the examples, I’ve defined two sample sequences:

string[] words = {"zero", "one", "two", "three", "four"};
int[] numbers = {0, 1, 2, 3, 4};

For completeness I’ve included the operators we’ve already seen, although in most cases chapter 11 contains more detail on them than I’ve provided here. For each operator, I’ve specified whether it uses deferred or immediate execution.

Aggregation

The aggregation operators ...