Ruby program to demonstrate the delete_if() method

Program/Source Code:

The source code to demonstrate the delete_if() method is given below. The given program is compiled and executed on Windows 10 Operating System successfully.

# Ruby program to demonstrate the 
# delete_if() method

hash = { "a" => 100, "b" => 200, "c" => 300,"d" => 400};

puts "Hash collection before deletion: ",hash;

result = hash.delete_if{|key, value| value <= 200 };
puts "Hash collection after deletion: ",result;

Output:

Hash collection before deletion: 
{"a"=>100, "b"=>200, "c"=>300, "d"=>400}
Hash collection after deletion: 
{"c"=>300, "d"=>400}

Explanation:

In the above program, we created a hash collection to store student information. Then we used the delete_if() method to remove elements from the hash collection based on the specified condition. After that, we printed the result hash collection.