Questions tagged [cfbitvector]
5 questions
4
votes
1 answer
CFRange cannot cross-byte when using CFBitVectorGetBits
Byte a[2]={85, 15};
Byte b[2]={0};
CFBitVectorRef bv1 = CFBitVectorCreate(kCFAllocatorDefault, a, 16);
CFRange r1 = {3, 8};
CFBitVectorGetBits(bv1, r1, b);
Byte a[2] are "0101 0101 0000 1111", I want to cut the {3,8} (1010 1000) of CFRange into…
Witeman
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How to store CFBitVector (or any CFType) in Core Data using CFData/NSData?
I have limited experience working with the Core Foundation types & collections, so apologies if this is obvious.
I'm using the CFBitVector type to store some bit sequences, and I need to store it in a binary data format (so that it can be added to a…
Stuart
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How to bitwise-and CFBitVector
I have two instances of CFMutableBitVector, like so:
CFBitVectorRef ref1, ref2;
How can I do bit-wise operations to these guys? For right now, I only care about and, but obviously xor, or, etc would be useful to know.
Obviously I can iterate…
Kurt Spindler
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Why is CFBit defined as a UInt32?
Apple documents CFBit as being a UInt32, but I'm confused as to why. Doesn't that defeat the purpose of using a bit vector if each bit is defined with 32 bits? Am I missing something?
tnev
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2 answers
CFBitVector stored as an attribute to a coredata object
I am attempting to create a fingerprint for an object in coreData, and want to set it as attribute to an object. I figured CFBitArray is the way to go.
I am trying to figure out how to save this per object:
Here is an example
Object…
William Falcon
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