Ruby - Statement unless statement

Introduction

unless can work in exactly the same way because unless is just the opposite of if:

Demo

age = 10 
unless age >= 18 # from   ww w. j a  v a2s.  c o  m
   puts "You're too young to use this system" 
   puts "So we're going to exit your program now" 
   exit 
end

Result

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