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bracket-vs-dup.rb

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nirvdrum-patch-1

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bracket-vs-dup.rb

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require 'benchmark/ips'

HASH = Hash[*('a'..'z').to_a]

def fast

Hash[HASH]

end

def slow

HASH.dup

end

Benchmark.ips do |x|

x.report("Hash[]") { fast }

x.report("Hash#dup") { slow }

x.compare!

end