What does "<<" mean in C #?

Question

What does <<do in this piece of code?

 [Serializable] [Flags] public enum SiteRoles { User = 1 << 0, Admin = 1 << 1, Helpdesk = 1 << 2 } 

Answer 1

Bit offset

Answer 2

This means the bitshift is on the left, like this:

 int i = 1 << 2; // 0000 0001 (1) // shifted left twice // 0000 0100 (4) 

The left bit shift is similar to multiplying by two, and the right bit shift acts as division by two.

Bitshifts are useful because they convey better semantics when working with bitmasks, and they (at least x86) are faster than multiplication

Answer 3

Bitshifting Like in C ++

Answer 4

Bit change

Answer 5

This is a bit shift.

Admin = 1 << 1 means that one binary value moves left one bit.

Result

Admin = 2