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sponomarev/howlong.rb

Created August 13, 2018 20:39
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howlong.rb
#!/usr/bin/env ruby
require 'time'
start = Time.now
ARGF.read.each_line do |line|
now = Time.now
prev ||= now
$stdout.puts "#{now.iso8601} #{ now - start }s #{ now - prev }s #{line}"
prev = now
end
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