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authorDuncan P. N. Exon Smith <dexonsmith@apple.com>2020-12-03 19:26:56 -0800
committerDuncan P. N. Exon Smith <dexonsmith@apple.com>2020-12-08 15:25:03 -0800
commitcaab41c08e36872d91dddd4a05a5d98948802ac7 (patch)
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ADT: Add hash_value overload for Optional
Add a `hash_value` for Optional so that other data structures with optional fields can easily hash them. I have a use for this in an upcoming patch. Differential Revision: https://reviews.llvm.org/D92676
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