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Ruby | Hash empty? function
  • Last Updated : 07 Jan, 2020

Hash#empty?() is a Hash class method which checks whether the Hash array has any key-value pair.

Syntax: Hash.empty?()

Parameter: Hash values

Return: true – if no key value pair otherwise rturn false

Example #1 :



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# Ruby code for Hash.empty?() 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}
   
   
# empty? Value
puts "Hash a empty? form : #{a.empty?()}\n\n"
   
puts "Hash b empty? form : #{b.empty?()}\n\n"
   
puts "Hash c empty? form : #{c.empty?()}\n\n"

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Output :

Hash a empty? form : false

Hash b empty? form : false

Hash c empty? form : false

Example #2 :

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# Ruby code for Hash.empty?() method
   
# declaring Hash value
a = { "a" => 100, "b" => 200 }
   
# declaring Hash value
b = {}
   
# declaring Hash value
c = {"a" => 100, "c" => 300, "b" => 200}
   
# emoty? Value
puts "Hash a empty? form : #{a.empty?()}\n\n"
   
puts "Hash b empty? form : #{b.empty?()}\n\n"
   
puts "Hash c empty? form : #{c.empty?()}\n\n"

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Output :

Hash a empty? form : false

Hash b empty? form : true

Hash c empty? form : false

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