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@rafbm
Created January 19, 2015 15:52
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Ruby String#tr VS String#gsub benchmark
require 'benchmark'
STRING = 'Haha hah hahaa ahah!!'
FIND = 'a'
REPLACE = 'o'
STRING.tr(FIND, REPLACE) == STRING.gsub(FIND, REPLACE) or abort
Benchmark.bmbm do |bm|
bm.report '.tr' do
1_000_000.times { STRING.tr(FIND, REPLACE) }
end
bm.report '.gsub' do
1_000_000.times { STRING.gsub(FIND, REPLACE) }
end
end
__END__
Rehearsal -----------------------------------------
.tr 0.500000 0.010000 0.510000 ( 0.509202)
.gsub 7.230000 0.030000 7.260000 ( 7.305856)
-------------------------------- total: 7.770000sec
user system total real
.tr 0.470000 0.000000 0.470000 ( 0.466244)
.gsub 7.110000 0.050000 7.160000 ( 7.201910)
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