use map look-up for indexes #7242
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What did this pull request do?
Changing the implementation of
schema.LookIndexto use map's two-value assignment tests for the existence of a key when looking for an index before switching to field lookup for performance.User Case Description
The existing implementation of
Schema.LookIndexuses linear search (in the best case) instead of using map test using const-time before falling back to a linear scan.The new implementation has a performance advantage for cases with many indexes.