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Exchanging Values Without Using Temporary Variables
CodeExpectedActual
a = 1
b = 2
a, b = b, a
a
 2 2 
b
 1 1 
a, b, c = :red, :green, :blue
c, a, b = a, b, c
a
 :green :green 
b
 :blue :blue 
c
 :red :red 
array = [:red, :green, :blue]
c, a, b = array
a
 :green :green 
b
 :blue :blue 
c
 :red :red 
a, b, *c = [12, 14, 178, 89, 90]
a
 12 12 
b
 14 14 
c
 [178, 89, 90] [178, 89, 90] 
a, b = 1, 2
x = a
a = b
b = x
a, b = 5, 10
a, b = b/a, a-1
 [2, 4] [2, 4] 
a, b, c = 'A', 'B', 'C'
a, b, c = [a, b], { b => c }, a
a
 ["A", "B"] ["A", "B"] 
b
 {"B"=>"C"} {"B"=>"C"} 
c
 "A" "A" 
a, b = 1, 2
a, b = b
a
 2 2 
b
 nil nil 
a, b = rand(1000), rand(1000)
 [595, 742] [595, 742] 
a = a ^ b
 181 181 
b = b ^ a
 595 595 
a = a ^ b
 742 742 
[a, b]
 [742, 595] [742, 595]