EntiryRef Perf: Avoid Enumerable.OfType() #491
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Daniel-Svensson
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Daniel-Svensson
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Skip OfType() in EntityRef.GetSingleMatch if possible
Remove type check and cast when looking up an entityref.
When the target collection have thousands of entities the oftype enumerable was responsible for almost 2/3 of lookup cost.
This should give a little better perf until #6 is implemented.