rblineprof usage

gistfile1.rb

# writing to a file
f = File.open("/tmp/profile", "w")
f.truncate(0)
for file in profile.keys
  f.puts "\n#{file}"
  File.readlines(file).each_with_index do |line, num|
    if (sample = profile[file][num+1]) and sample[0] > 0
      f.printf "% 8.1fms | %s", sample[0]/1000.0, line
    else
      f.printf "           | %s", line
    end
  end
end
f.close

# writing to stdout
for file in profile.keys
  puts "\n#{file}"
  File.readlines(file).each_with_index do |line, num|
    if (sample = profile[file][num+1]) and sample[0] > 0
      printf "% 8.1fms | %s", sample[0]/1000.0, line
    else
      printf "           | %s", line
    end
  end
end