Procs

Ruby |

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add_5 = proc { |x| x + 5 }
add_5.call 10 #=> 15
 
add = proc { |x, y| x + y}
add.call 12, 5
 
add_5 = Proc.new { |x| x + 5 }
add_5.call 4 #=> 9

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