Ruby | Hash merge! function
Last Updated :
07 Jan, 2020
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 :
a = {a: 100 , b: 200 }
b = {a: 100 , c: 300 , b: 200 }
c = {a: 100 }
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"
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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 :
a = { "a" => 100 , "b" => 200 }
b = { "a" => 100 }
c = { "a" => 100 , "c" => 300 , "b" => 200 }
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"
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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}
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