String manipulation code examples

Let's start with an example. Let's say I want my application to always display the word Astros in capital letters. To do that, I simply write this:

"Astros".upcase 

Now if I always want a string to be in lower case letters, I can use the downcase method, like this:

"Astros".downcase 

These are the two methods I use quite often. However, there are other string methods available that we also have at our disposal.

For the rare times when you want to literally swap the case of the letters, you can leverage the swapcase method:

"Astros".swapcase 

Lastly, if you want to reverse the order of the letters in the string we can call the reverse method:

"Astros".reverse 

These methods are built into the String data class and we can call them on any string value in Ruby.