It looks like I may have jumped the gun with my conclusions from the previous exercise to benchmark string performance in Delphi 2009. Following a useful exchange in the comments with Kryvich I corrected a small discrepancy in the tests and made some changes to the performance testing subsystem within the SmokeTest framework. I then re-ran my string performance benchmarks with some significant – and more encouraging – differences in the results.
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Prompted by a conversation with some colleagues where-in we collectively speculated about the implementation details of a generic class and what impact – if any – this might have on performance vs a “traditional” polymorphic equivalent, I threw together a quick performance test case in my Smoketest framework, and as a result discovered a couple of significant changes in Delphi 2009 that created some unexpected problems.
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