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sergey-alekseev/merge-vs-merge-with-bang.rb

Created March 30, 2015 12:38
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Ruby Merge vs. Merge! comparison (benchmarking)
Raw
merge-vs-merge-with-bang.rb
Benchmark.ips do |x|
x.report('merge') { {}.merge :a => 1 }
x.report('merge!') { {}.merge! :a => 1 }
x.compare!
end
Calculating -------------------------------------
merge 34.220k i/100ms
merge! 33.039k i/100ms
-------------------------------------------------
merge 1.923M (±32.2%) i/s - 7.631M
merge! 2.582M (±34.2%) i/s - 6.740M
Comparison:
merge!: 2582064.1 i/s
merge: 1922744.2 i/s - 1.34x slower
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