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authorrowanbeentje <rowan@beent.je>2010-01-17 16:24:13 +0000
committerrowanbeentje <rowan@beent.je>2010-01-17 16:24:13 +0000
commitab9b7d9dad3dcd3a2675d33684729637e5509d42 (patch)
treeb1655480f033fdcbbd12caed945fcead636042dc /Source/DeepMutableCopy.h
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Add a new SPDataStorage class, and use it in TableContent and CustomQuery:
- SPDataStorage is a class designed for a 2D array of fixed-width data storage, replacing the current method of nested NSMutableArrays. NSFastEnumerator compatible. - Overall memory overhead for table storage in memory reduced by 1.2-1.4x - this almost gains back the large memory jump seen for 64 bit - Some operations (adding data, retrieving a single cell's data) are faster than nested NSMutableArrays; some operations (requesting a row as an NSArray) are slightly slower as the data needs to be converted, but overall result is a slight speed gain. (- Could be used in future to store SQL results in C datatypes, avoiding very high NSObject overhead for numbers and short strings)
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