Equality comparison between multiple variables

Question

I\'ve a situation where I need to check whether multiple variables are having same data such as

var x=1;
var y=1;
var z=1;

I want to check

Answer 1

XOR might work for you, e.g. given:

var x=1;
var y=1;
var z=1;

Then

x ^ y ^ z == 0

Is true

-edit- If you want to check if all values are the same and their value is 1, use:

x ^ y ^ z ^ 1 == 0

Answer 2

Slight variation on the excellent answer given by jevakallio above. See if myValue is equal to any of the values in a list (in the array):

if (new[] { 10, 11, 12 }.Any(x => x == myValue))