Click here to navigate the course.

Drag the edges to resize the window.

In Projects, you can keep track of your progress as you go throught the tasks. Check each item as you complete it!

Code Editor
Learn
Introduction to Ruby

Variables

One of the most basic concepts in computer programming is the variable. You can think of a variable as a word or name that grasps a single value. For example, let's say you needed the number 25 from our last example, but you're not going to use it right away. You can set a variable, say my_num, to grasp the value 25 and hang onto it for later use, like this:

my_num = 25

Declaring variables in Ruby is easy: you just write out a name like my_num, use = to assign it a value, and you're done! If you need to change a variable, no sweat: just type it again and hit = to assign it a new value.

Report a Bug
If you see a bug or any other issue with this page, please report it here.