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copied!<p>Not to beat a dead horse, but you can speed this up a bit more by making two changes that have become second nature to me now. The first is use <code>map!</code> instead of <code>map</code> to avoid creating a copy of the split array, and the second is to avoid use of the symbol to proc syntax (e.g. <code>&:split</code>, which adds an extra operation that can be avoided with the more verbose syntax).</p> <p>Benchmark follows:</p> <pre><code>require 'benchmark' s = "one thing, two things, three things, four things" result = "" Benchmark.bmbm do |b| b.report("strip/split (map/to_proc): ") { 1_000_000.times { result = s.split(",").map(&:strip) } } b.report("strip/split (map): ") { 1_000_000.times { result = s.split(",").map { |e| e.strip } } } b.report("strip/split (map!/to_proc): ") { 1_000_000.times { result = s.split(",").map!(&:strip) } } b.report("strip/split (map!): ") { 1_000_000.times { result = s.split(",").map! { |e| e.strip } } } b.report("regex: ") { 1_000_000.times { result = s.split(/\s*,\s*/) } } end </code></pre> <p>Results:</p> <pre><code> user system total real strip/split (map/to_proc): 5.230000 0.010000 5.240000 ( 5.283079) strip/split (map): 4.660000 0.010000 4.670000 ( 4.716920) strip/split (map!/to_proc): 4.440000 0.020000 4.460000 ( 4.492943) strip/split (map!): 4.320000 0.010000 4.330000 ( 4.365386) regex: 7.190000 0.060000 7.250000 ( 7.322932) </code></pre> <p><em>Remember to read the numbers relative to each other, not relative to the benchmarks provided in other answers.</em></p>

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