You don't need to count array offsets by hand!

Working with arrays in Ruby. Don't do this:

index = 0
for item in array
  index += 1
  puts "Item #{index}: #{item.inspect}"
end

Do this instead:

array.each_with_index do |item, index|
  puts "Item #{index}: #{item.inspect}"
end

There are a bunch of handy methods like this. Read the Enumerable documentation and make your code that little bit more readable.

Leave feedback...

  1. don’t use each_wth_index, use each_with_index instead. much better ;)

  2. @Egze very good point – typo fixed. Thanks!

Commenting is closed for this article.

About the boy

A picture of Craig in grayscale

Craig Webster is a software engineer living in London. He usually works with Ruby although sometimes he sneaks in some Erlang or JavaScript. He's into rock climbing, snowboarding, skating, photography and fencing. Yes, this does mean he has a sword.

Near here you'll find Craig's homepage, contact details, PGP key and keysigning policy, and talks.

Licence

The entire content of this blog is public domain. Use it however you fancy. You don't even need to attribute it to me, although it would be nice if you did. Just don't sue me and we'll all be happy.

I Work With Rails

Recommend Me

My Travels

I go places. Do you go places too? Let's meet up!.