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@stulentsev

stulentsev/mixed.rb

Created Apr 18, 2019
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spam filter: proof of concept
tests = %w(
лошадь
horse
horse123
h0rse
лошадb
slоn
)
def complicated(tests)
@character_set_union_intersection_rgx ||= %r{\b(?=[[:alpha:]]*[a-zA-Z])(?=[[:alpha:]]*[[:alpha:]&&[^a-zA-Z]])\b}
tests.grep(@character_set_union_intersection_rgx)
end
def naive(tests)
@all_letters_rgx ||= /\A[[:alpha:]]+\z/
@latin_letters_rgx ||= /[a-zA-Z]/
tests.select do |w|
if w =~ @all_letters_rgx
fs = w.gsub(@latin_letters_rgx, '')
fs.size != 0 && fs.size != w.size
end
end
end
require 'benchmark/ips'
Benchmark.ips do |x|
x.report("naive") do
naive(tests)
end
x.report("complicated") do
complicated(tests)
end
x.compare!
end
# >> Warming up --------------------------------------
# >> naive 8.558k i/100ms
# >> complicated 19.474k i/100ms
# >> Calculating -------------------------------------
# >> naive 88.259k (± 2.0%) i/s - 445.016k in 5.044214s
# >> complicated 204.001k (± 4.0%) i/s - 1.032M in 5.067678s
# >>
# >> Comparison:
# >> complicated: 204001.4 i/s
# >> naive: 88259.1 i/s - 2.31x slower
# >>
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