"OR" clause in an assignment

[Programmer1974]

I've seen this line of script in a few exampes here at teck tips, and I'm curious to what it's actually doing. Here is an example:

newAce.AccessMask = ADS_RIGHT_GENERIC_ALL Or DS_RIGHT_GENERIC_READ Or ADS_RIGHT_GENERIC_EXECUTE Or ADS_RIGHT_GENERIC_WRITE Or ADS_RIGHT_DELETE

You could also write a statement like this:

strTest = 1 OR 2

If you do this statement:

MsgBox strTest

The popup box will show the value "3". What in the world is the OR doing with these statements?

Thank you much!

 

[ClayG]

Binary (also called bitwise) "OR"

1 = bin:0001
2 = bin:0010
OR (on each column eg "1" or "0" = "1") =
0011 = 3

Often used for stuffing multiple flags (as bits) into a single value, eg upsize_me = 1, with_fries = 2 --> upsize with fries = 3. When used this way, each option will be a power of 2, 1,2,4,8,16,32,.. .