Ruby | Hash merge! function

Hash#merge!() : merge!() is a Hash class method which can add the content the given hash array to the other. Entries with duplicate keys are overwritten with the values from each other_hash successively if no block is given.

Syntax: Hash.merge!()

Parameter: Hash values

Return: add the content the given hash array to the other

Example #1 :

# Ruby code for Hash.merge!() method

# declaring Hash value
a = {a:100, b:200}

# declaring Hash value
b = {a:100, c:300, b:200}

# declaring Hash value
c = {a:100}


# merge! Value
puts "Hash a merge! form : #{a.merge!(b)}\n\n"

puts "Hash b merge! form : #{b.merge!(c)}\n\n"

puts "Hash c merge! form : #{c.merge!(a)}\n\n"

Output :

Hash a merge! form : {:a=>100, :b=>200, :c=>300}

Hash b merge! form : {:a=>100, :c=>300, :b=>200}

Hash c merge! form : {:a=>100, :b=>200, :c=>300}

Example #2 :

# Ruby code for Hash.merge!() method

# declaring Hash value
a = { "a" => 100, "b" => 200 }

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

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


# merge! Value
puts "Hash a merge! form : #{a.merge!(b)}\n\n"

puts "Hash b merge! form : #{b.merge!(c)}\n\n"

puts "Hash c merge! form : #{c.merge!(a)}\n\n"

Output :

Hash a merge! form : {"a"=>100, "b"=>200}

Hash b merge! form : {"a"=>100, "c"=>300, "b"=>200}

Hash c merge! form : {"a"=>100, "c"=>300, "b"=>200}