Hash#select!() is a Hash class method which checks whether the array from the hash ius present based on the block condition.
Ruby
Output :
Ruby
Output :
Syntax: Hash.select!() Parameter: Hash values block condition Return: array from the hash is present based on the block condition otherwise return falseExample #1 :
# Ruby code for Hash.select!() 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}
# select! Value
puts "Hash a select! form : #{a.select! {|key, value| key < "b"}}\n\n"
Hash a select! form : {"a"=>100}
Example #2 :
# Ruby code for Hash.select!() method
# declaring Hash value
b = {"a" => 100}
# declaring Hash value
c = {"a" => 100, "c" => 300, "b" => 200}
# select! Value
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"
Hash b select! form :
Hash c select! form : {"a"=>100}