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How do I check if bitmask contains a bit?
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How do I check if bitmask contains a bit?
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I don't quite understand this whole bitmask concept.
Let's say I have a mask:
var bitMask = 8 | 524288;
I undestand that this is how I would combine 8 and 524288, and get 524296.
BUT, how do I go the other way? How do I check my bitmask, to see if it contains 8 and/or 524288?
To make it a bit more complex, let's say the bitmask I have is 18358536 and I need to check if 8 and 524288 are in that bitmask. How on earth would I do that?
if (8 & bitmask == 8 ) {
}
will check if the bitmask contains 8.
more complex
int mask = 8 | 12345;
if (mask & bitmask == mask) {
//true if, and only if, bitmask contains 8 | 12345
}
if (mask & bitmask != 0) {
//true if bitmask contains 8 or 12345 or (8 | 12345)
}
may be interested by enum and more particularly FlagsAttibute.
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