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require 'benchmark/ips'
[10, 100, 1000, 10_000, 100_000].each do |array_size|
array = (1..array_size).to_a
Benchmark.ips do |ips|
ips.report("#select { true }.size for #{array_size}") do
array.select { true }.size
end
ips.report("#count { true } for #{array_size}") do
array.count { true }
end
end
end
__END__
ruby benchmarks/count_vs_select_size.rb (git)-[main]
Warming up --------------------------------------
#select { true }.size for 10
129.033k i/100ms
#count { true } for 10
168.627k i/100ms
Calculating -------------------------------------
#select { true }.size for 10
1.397M (± 6.8%) i/s - 6.968M in 5.011533s
#count { true } for 10
1.716M (± 7.8%) i/s - 8.600M in 5.048212s
Warming up --------------------------------------
#select { true }.size for 100
16.633k i/100ms
#count { true } for 100
19.215k i/100ms
Calculating -------------------------------------
#select { true }.size for 100
170.209k (± 8.1%) i/s - 848.283k in 5.036749s
#count { true } for 100
212.102k (± 4.1%) i/s - 1.076M in 5.081653s
Warming up --------------------------------------
#select { true }.size for 1000
1.650k i/100ms
#count { true } for 1000
1.803k i/100ms
Calculating -------------------------------------
#select { true }.size for 1000
15.651k (±17.0%) i/s - 75.900k in 5.073128s
#count { true } for 1000
20.613k (± 5.6%) i/s - 104.574k in 5.091257s
Warming up --------------------------------------
#select { true }.size for 10000
146.000 i/100ms
#count { true } for 10000
202.000 i/100ms
Calculating -------------------------------------
#select { true }.size for 10000
1.613k (± 8.4%) i/s - 8.030k in 5.014577s
#count { true } for 10000
2.031k (± 4.8%) i/s - 10.302k in 5.085695s
Warming up --------------------------------------
#select { true }.size for 100000
15.000 i/100ms
#count { true } for 100000
21.000 i/100ms
Calculating -------------------------------------
#select { true }.size for 100000
170.963 (± 4.1%) i/s - 855.000 in 5.010050s
#count { true } for 100000
211.185 (± 4.7%) i/s - 1.071k in 5.083109s
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