Ruby | Hash key?() function
Hash#key?() is a Hash class method which checks whether the key corresponding to the value is present or not.
Syntax: Hash.key?()
Parameter: Hash values
Return: true – if key corresponding to the value is present otherwise return false
Example #1 :
a = { "a" => 100 , "b" => 200 }
b = {a: 100 , c: 300 , b: 200 }
c = {a: 100 }
puts "Hash a key? form : #{a.key?(" a ")}\n\n"
puts "Hash b key? form : #{b.key?(" c ")}\n\n"
puts "Hash c key? form : #{c.key?(" a ")}\n\n"
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Output :
Hash a key? form : true
Hash b key? form : false
Hash c key? form : false
Example #2 :
a = { "a" => 100 , "b" => 200 }
b = { "a" => 100 }
c = { "a" => 100 , "c" => 300 , "b" => 200 }
puts "Hash a key? form : #{a.key?(" a ")}\n\n"
puts "Hash b key? form : #{b.key?(" c ")}\n\n"
puts "Hash c key? form : #{c.key?(" a ")}\n\n"
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Output :
Hash a key? form : true
Hash b key? form : false
Hash c key? form : true
Last Updated :
07 Jan, 2020
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