Ruby | Hash select() method
Last Updated :
07 Jan, 2020
Hash#select() : select() is a Hash class method which finds the array from the hash based on the block condition.
Syntax: Hash.select()
Parameter: Hash values
block condition
Return: array from the hash based on the block condition.
Example #1 :
a = { "a" => 100, "b" => 200 }
b = {"a" => 100}
c = {"a" => 100, "c" => 300, "b" => 200}
puts "Hash a select form : #{a.select {|key, value| key < "b"}}\n\n"
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Output :
Hash a select form : {"a"=>100}
Example #2 :
b = {"a" => 100}
c = {"a" => 100, "c" => 300, "b" => 200}
puts "Hash b select form : #{b.select{|key, value| value < 200}}\n\n"
puts "Hash c select form : #{c.select{|key, value| key < "b"}}\n\n"
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Output :
Hash b select form : {"a"=>100}
Hash c select form : {"a"=>100}
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