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Ruby program to check a hash collection is empty or not

Ruby Example: Write a program to check a hash collection is empty or not.
Submitted by Nidhi, on February 16, 2022

Problem Solution:

In this program, we will create a hash collection. Then we will check a collection is empty or not using empty?() method.

Program/Source Code:

The source code to check a hash collection is empty or not is given below. The given program is compiled and executed on Windows 10 Operating System successfully.

# Ruby program to check a hash collection 
# is empty or not

hash1 = {"101" => "Amit", "102" => "Arun", "103" => "Sumit"};
hash2 = {};

if hash1.empty?() == true
    puts "hash1 collection is empty";
else
    puts "hash1 collection is not empty";
end

if hash2.empty?() == true
    puts "hash2 collection is empty";
else
    puts "hash2 collection is not empty";
end

Output:

hash1 collection is not empty
hash2 collection is empty

Explanation:

In the above program, we created two hash collections. Then we checked created collections are empty or not using empty?() method and printed the appropriate message.

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