Today I Learned

hashrocket A Hashrocket project

Ruby has endless ranges

You can access the last n characters of a string by using and endless range:

credit_card = "1234•5678•7126•5555"
last_four = (-4..)
puts "Last four: #{credit_card[last_four]}"
Ruby
=> Last four: 5555
See More #ruby TILs
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