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Ruby | Hash empty? function

  • Last Updated : 15 Apr, 2021

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 return false

Example #1 : 
 

Ruby




# 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"

Output : 
 



Hash a empty? form : false

Hash b empty? form : false

Hash c empty? form : false

Example #2 :
 

Ruby




# 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"

Output :

Hash a empty? form : false

Hash b empty? form : true

Hash c empty? form : false

 




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