‘Ruby is simple in appearance, but is very complex inside, just like our human body’. This quote by Yukihiro Matsumoto, the chief designer of Ruby, means a lot for Rubyists. Ruby is intuitive and beautiful but has many work secrets that you don’t realize. And knowing them will obviously make you a better developer, because if you know how it works – you’re able not only using it but are empowered to improve it! Here we collected for you some tips and methods to write a better Ruby code. Read and use!
Ones we already shared with you 5 Ruby methods you should be using to write a better code. But the learning is a loop, so repeating and improvement will definitely help you to empower your development skills.
To make sure, that your code is legible, modular, and concise let’s start with
Ruby best practices:
- ‘case/when’ and ‘unless/until/while’ conditionals, instead of lengthy ‘if’ statements, allow you to check whether a variable is set to many different values and is particularly useful when responding to user input.
- to group together a collection of inputs into an array use the splat (*) operator for methods with a variable number of inputs.
- using ‘monkey patch’ pre-defined methods you can easily rewrite predefined methods so they work better for our specific needs.
- avoid for loops and use the ‘each’ method with a block.
- use symbols instead of strings in hashes.
- the double bang (!!) is an elegant way of creating the common ‘does some variable exist?’ (to determine if a value exists) method.
- don’t write comments for a wrong reason (‘Good code is like a good joke: it needs no explanation’).
- if possible, make your code shorter using ternary operators.
- avoid using ‘before_action’ to set variables: use a memoized finder instead.
- use Symbol garbage collector (GC).
Interesting methods to write a better Ruby code
- Integer#digits method
- The Tap method
- Array#values_at method
- Hash#transform_values method
- Kernel#itself method (for Ruby 2.2 that will no longer be supported)
- Array#count method
- Enumerable#cycle method
Thanks to Jesus Castello for this scope!
You can write Ruby methods yourself too. But when doing this, remember about the composed method technique that has 3 simple rules:
- Each method should do a single thing;
- Each method needs to operate at a single conceptual level;
- Each method needs to have a name that reflects its purpose.
- Learn about array methods and Ruby syntax with code snippets.
- Learn more about Methods in Ruby.
- Read the consideration of Ruby vs Elixir – when to use
- Interesting facts about Ruby
- Ruby books and tutorials
- Memoization in Ruby
- ‘Effective Ruby: 48 Specific Ways to Write Better Ruby’ book from ‘Effective Software Development Series’