c# Left-shift operator << as the «for loop» «iterator»

Question

I need to iterate through every bit of a byte. There are many ways to do it but my curiosity got piqued when trying to use a for loop with the "shift-left" operator as the iterator. This is what I would like to do.

for (byte i = 0x01; i <= 0x80; i << 1)
{
    value = value ^ i;
}

In this situation how could I use the shift-left operator (i << 1) for iteration? In a typical for loop, you would have (int i=0; i < 10; i++) the iterator being i++ for incrementing by one.

Use the `<<= ` compound assignment operator, or simply type `i = i << 1` — Emanuel Vintilă, Jun 28 '20 at 13:52
Note that your for loop will never end, as 0x80 << 1 is 0x00 again. — Klaus Gütter, Jun 28 '20 at 15:19

score 2 · Answer 1 · answered Jun 28 '20 at 13:58

2

You can use the compound assignment form of the operator like i <<= 1. Or you can simply use i = i << 1.

answered Jun 28 '20 at 13:58

Emanuel Vintilă

1,911
4
25
35

c# Left-shift operator << as the «for loop» «iterator»

1 Answers1