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garettarrowood/benchmark.rb

Created November 26, 2017 01:00
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Hash#merge! vs hash assignment Benchmarks
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benchmark.rb
hash = {a:1, b:2, c:3, d:4, e:5, f:6, g:7, h:8, i:9, j:10}
Benchmark.measure { 10_000_000.times { hash.merge!(k:11) } }
=> @real=5.950756500009447, @utime=5.62, @total=5.94
Benchmark.measure { 10_000_000.times { hash[:k] = 11 } }
=> @real=0.6477032300026622, @utime=0.6499999999999995, @total=0.6499999999999995
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