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benchmark each_with_object
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# each_with_index, each_with_object and inject({}) are all %50 slower then #each | |
# simple each with an addition noop | |
[4] pry(main)> puts Benchmark.measure { (1..10_000_000).each { |i| i + 1 } } | |
0.450000 0.000000 0.450000 ( 0.448808) | |
# each_with_index | |
[5] pry(main)> puts Benchmark.measure { (1..10_000_000).each_with_index { |i, index| i + 1 } } | |
0.650000 0.000000 0.650000 ( 0.645812) | |
# each_with_object | |
[6] pry(main)> puts Benchmark.measure { (1..10_000_000).each_with_object({}) { |i, hash| i + 1 } } | |
0.640000 0.000000 0.640000 ( 0.641546) | |
# using inject style | |
[8] pry(main)> puts Benchmark.measure { (1..10_000_000).inject({}) { |hash, i| i + 1 } } | |
0.660000 0.000000 0.660000 ( 0.660929) | |
# using inject style and returning the hash | |
[9] pry(main)> puts Benchmark.measure { (1..10_000_000).inject({}) { |hash, i| i + 1; hash } } | |
0.670000 0.000000 0.670000 ( 0.674742) |
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