Ruby | Hash shift() method

Hash#shift() is a Hash class method which removes a key-value pair from hash and then it returns these value as two-item array.

Syntax: Hash.shift()

Parameter: Hash values

Return: two-item [key-value] array

Example #1 :

# Ruby code for Hash.shift() method

# declaring Hash value
a = {a:455, b:200}

# declaring Hash value
b = {e:500, c:300, b:200}

# declaring Hash value
c = {a:100}


# shift Value
puts "Hash a shift form : #{a.shift()}\n\n"

puts "Hash b shift form : #{b.shift()}\n\n"

puts "Hash c shift form : #{c.shift()}\n\n"

Output :

Hash a shift form : [:a, 455]

Hash b shift form : [:e, 500]

Hash c shift form : [:a, 100]

Example #2 :

# Ruby code for Hash.shift() method

# declaring Hash value
a = { "a" => 344, "b" => 200 }

# declaring Hash value
b = {"a" => 100}

# declaring Hash value
c = {"e" => 100, "c" => 300, "b" => 200}


# shift Value
puts "Hash a shift form : #{a.shift()}\n\n"

puts "Hash b shift form : #{b.shift()}\n\n"

puts "Hash c shift form : #{c.shift()}\n\n"

Output :

Hash a shift form : ["a", 344]

Hash b shift form : ["a", 100]

Hash c shift form : ["e", 100]