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TCardinality
TCardinality
's use is best explained by an example:
If an integral value that needs externalising is known to be non-negative and cannot exceed 2^29 (e.g. the length of a descriptor)
- instead of storing a 32-bit value in the stream, you can use TCardinality
to compress the external format. So instead of
writeStream.WriteUint32L(myValue);
...
myValue=readStream.ReadUint32L();
you would use
writeStream << TCardinality(myValue);
...
TCardinality c;
readStream >> c;
myValue=c;