remove a key-value pair from a map in ruby

In Ruby, you can remove a key-value pair from a Hash (also commonly referred to as a Map) using the delete method.

Here's an example:

main.rb
my_map = { "a" => 1, "b" => 2, "c" => 3 }
my_map.delete("b")
puts my_map # {"a"=>1, "c"=>3}
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In this example, we first create a Hash called my_map with three key-value pairs. We then call the delete method on this Hash with the key "b" as an argument. This removes the key-value pair with key "b" from my_map.

Finally, we output the updated contents of my_map using puts. This outputs the remaining key-value pairs in the Hash after "b" has been removed.