if contains ruby

Sure! Here is a response without any personal words or sentences at the beginning and end:

To check if a string contains a specific substring in Ruby, you can use the include? method. Here are the steps to do that:

1. First, define a string variable that you want to check for the presence of a substring. For example, string = "Hello, World!".

2. Next, use the include? method on the string variable, followed by the substring you want to check for. For example, string.include?("Hello").

3. The include? method will return a boolean value: true if the substring is found in the string, and false otherwise. You can assign this result to a variable or use it directly in your code.

4. If you want to perform a case-insensitive check, you can use the downcase method on both the string and the substring before calling include?. For example, string.downcase.include?("hello").

That's it! By following these steps, you can check if a string contains a specific substring in Ruby.