What do two left-angle brackets “<<” mean in C#?

Question

Basically the questions in the title. I\'m looking at the MVC 2 source code:

[Flags]
public enum HttpVerbs {
    Get = 1 << 0,
    Post = 1 << 1,         


        

Answer 1

It is implied in a number of answers but never stated directly...

For every position that you shift a binary number left, you double the original value of the number.

For example,

Decimal 5 binary shifted left by one is decimal 10, or decimal 5 doubled.

Decimal 5 binary shifted left by 3 is decimal 40, or decimal 5 doubled 3 times.