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The new implementation avoids reversing the "haystack" list, which can be very expensive. Reviewed By: ekmett Differential Revision: https://phabricator.haskell.org/D330
49b05d69
The new implementation avoids reversing the "haystack" list, which can be very expensive. Reviewed By: ekmett Differential Revision: https://phabricator.haskell.org/D330