find the difference of two maps in ruby

To find the difference between two maps in Ruby, you can convert them into arrays of key-value pairs and then use the - operator to get the difference between them. Here's an example code snippet:

main.rb
map1 = {a: 1, b: 2, c: 3}
map2 = {b: 2, c: 4, d: 5}

difference = map1.to_a - map2.to_a

puts difference.to_h # Output: {:a=>1}
128 chars
7 lines

In this example, we first convert both maps into arrays using the to_a method. We then subtract map2 from map1 to get the difference between them. Finally, we convert the result back into a hash using to_h and print it to the console.

Note that this method only compares the keys and values in the maps, so any differences in ordering or object identity will be ignored.