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corroded/delete-prefix.rb

Created March 8, 2021 02:38
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Quick benchmark of delete_prefix, sub, and gsub based off https://twitter.com/JemmaIssroff/status/1368204231476469760?s=20
Raw
delete-prefix.rb
require 'benchmark/ips'
Benchmark.ips do |bm|
MAX_LENGTH = 280
long_string = 'YOLO: the return of the comeback'
bm.report('delete_prefix') do
long_string.delete_prefix('YOLO: ')
end
bm.report('delete_prefix!') do
long_string.delete_prefix!('YOLO: ')
end
bm.report('sub') do
long_string.sub('YOLO: ', '')
end
bm.report('sub!') do
long_string.sub!('YOLO: ', '')
end
bm.report('gsub') do
long_string.gsub('YOLO: ', '')
end
bm.report('gsub!') do
long_string.gsub!('YOLO: ', '')
end
bm.compare!
end
Raw
results.sh
Warming up --------------------------------------
delete_prefix 503.777k i/100ms
delete_prefix! 938.312k i/100ms
sub 364.851k i/100ms
sub! 446.770k i/100ms
gsub 408.128k i/100ms
gsub! 460.125k i/100ms
Calculating -------------------------------------
delete_prefix 7.569M (± 3.4%) i/s - 38.287M in 5.064362s
delete_prefix! 9.272M (± 2.1%) i/s - 46.916M in 5.062187s
sub 3.767M (± 4.6%) i/s - 18.972M in 5.048189s
sub! 4.716M (± 1.6%) i/s - 23.679M in 5.021810s
gsub 4.124M (± 2.5%) i/s - 20.815M in 5.050811s
gsub! 4.708M (± 4.9%) i/s - 23.926M in 5.097267s
Comparison:
delete_prefix!: 9272140.6 i/s
delete_prefix: 7569230.2 i/s - 1.22x (± 0.00) slower
sub!: 4716448.4 i/s - 1.97x (± 0.00) slower
gsub!: 4708396.1 i/s - 1.97x (± 0.00) slower
gsub: 4123799.2 i/s - 2.25x (± 0.00) slower
sub: 3766876.1 i/s - 2.46x (± 0.00) slower
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