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Ruby | Hash flatten() function
  • Last Updated : 07 Jan, 2020

Hash#flatten() is a Hash class method which returns the one-dimensional flattening hash array.

Syntax: Hash.flatten()

Parameter: Hash values

Return: one-dimensional flattening hash array

Example #1 :



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# Ruby code for Hash.flatten() method
  
# declaring Hash value
a = {a:100, b:200}
  
# declaring Hash value
b = {a:100, c:[300, 45], b:200}
  
# declaring Hash value
c = {a:100}
  
  
# flatten Value
puts "Hash a flatten form : #{a.flatten()}\n\n"
  
puts "Hash b flatten form : #{b.flatten()}\n\n"
  
puts "Hash c flatten form : #{c.flatten()}\n\n"

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Output :

Hash a flatten form : [:a, 100, :b, 200]

Hash b flatten form : [:a, 100, :c, [300, 45], :b, 200]

Hash c flatten form : [:a, 100]

Example #2 :

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# Ruby code for Hash.flatten() method
  
# declaring Hash value
a = { "a" => 100, "b" => 200 }
  
# declaring Hash value
b = {"a" => 100}
  
# declaring Hash value
c = {"a" => 100, "c" => [300, 200, 500], "b" => 200}
  
  
# flatten Value
puts "Hash a flatten form : #{a.flatten()}\n\n"
  
puts "Hash b flatten form : #{b.flatten()}\n\n"
  
puts "Hash c flatten form : #{c.flatten()}\n\n"

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Output :

Hash a flatten form : ["a", 100, "b", 200]

Hash b flatten form : ["a", 100]

Hash c flatten form : ["a", 100, "c", [300, 200, 500], "b", 200]




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