FAQ: Introduction to Ruby - Variables

Frequently Asked Questions Ruby FAQ
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This community-built FAQ covers the “Variables” exercise from the lesson “Introduction to Ruby”.

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This exercise can be found in the following Codecademy content:

Learn Ruby

FAQs on the exercise Variables

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2

I’ve just got to Ruby from Javascript.

In JS the variable naming convention seemed to be:

myNum

whereas Ruby is:

my_num

Am I right in saying this? Are there rules/best practices for this?

3

they are not rules, but each language has recommendations for naming convention. cammelCase (see what i did there :wink: ) and underscore_case are the most common ones. PHP and JS use cammelCase while ruby and python underscore_case (in python its named snake_case, because well, its funny :stuck_out_tongue: )

2 Likes
4

:slight_smile:
Thanks for that.

5

Per language you can find these recommendations. For example python uses snake case for variable:

my_var = 3

but pascal case for classes:

MyClass

(here the first letter is also uppercase, so its different then cammelCase, in JS sometimes there is also kebab-case (with hyphen), mostly when dealing with DOM specific aspects of the JS language.