Small performance cache improvement#6
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bwbroersma wants to merge 3 commits into
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…ctor' to "Dr Porter's test", now we have a failing test case.
"An Object has a prototype, so there are default keys in the map that could collide with your keys if you're not careful. As of ES5 can be bypassed by using map = Object.create(null), but is seldom done." - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map#Objects_and_maps_compared
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Small performance improvement, by also caching/memoize the stemmed output as input. So when stemming
bankswhich stems tobankit will also cachebankas input. This is a speed over memory decision, and will cache 'useless' stemmed output as input likeacknowledg.