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Ruby | Hash length() method
  • Last Updated : 07 Jan, 2020

Hash#length() : length() is a Hash class method which gives number of key-value pairs in the hash.

Syntax: Hash.length()

Parameter: Hash values

Return: number of key-value pairs in the hash

Example #1 :






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

Output :

Hash a length form : 2

Hash b length form : 3

Hash c length form : 1

Example #2 :




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

Output :

Hash a length form : 2

Hash b length form : 1

Hash c length form : 3

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