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lang-js
uniquefunction has O(n^2) complexity while the one ingetUniqueis O(n). The first one may be faster on small data sets, but how can you argue with the maths :) You can make sure the latter one is faster if you run it on an array of, say, 1e5 unique itemsinput_array.length < 200, otherwise uses the[...new Set(input_array)]method. expressed as reducer:input_array.reduce((c, v) => {if (!c.includes(v)) c.push(v); return c;}, [])