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vmi/test.rb

Created January 20, 2022 08:32
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number format 3-digits with comma (ruby)
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test.rb
# https://stackoverflow.com/questions/6458990/how-to-format-a-number-1000-as-1-000
n = 1234567890
puts n.to_s.gsub(/(\d)(?=\d{3}+(?!\d))/, "\\1,")
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