delete_if() is a Hash class method which delete_if the key-value pair if the block condition is true
Syntax: Hash.delete_if()
Parameter: Hash array
Block ConditionReturn: value from hash whose key is equal to delete_ifd key.
Example #1:
# Ruby code for delete_if() method # declaring Hash value a = { "a" => 100 , "b" => 200 }
# declaring Hash value b = { "a" => 100 , "c" => 30 }
puts "delete_if a : #{a.delete_if{|key, value| value > 200 } }\n\n"
puts "delete_if b : #{b.delete_if{|key, value| key == " a " } }\n\n"
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Output :
delete_if a : {"a"=>100, "b"=>200} delete_if b : {"c"=>30}
Example #2:
# Ruby code for delete_if() method # declaring Hash value c = { "a" => 100 , "c" => 300 , "b" => 200 }
puts "delete b : #{c.delete_if{|key, value| key <= " b " } }\n\n"
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Output :
delete b : {"c"=>300}