Catch Ruby errors before your users do. Monitor Ruby production errors in real-time and debug them in minutes, before users notice. Our open source Ruby SDK works with Rails, Sinatra, and more. Use this link and get one month free!

RubyFlow The Ruby and Rails community linklog


The Ruby and Rails community linklog

Made a library? Written a blog post? Found a useful tutorial? Share it with the Ruby community here or just enjoy what everyone else has found!

How to Tell the Difference Between a Default and a Provided Value for Optional Argume

It is sometimes required for the methods with optional arguments to be able to differentiate between its default value and the value passed from the caller. Passing nil might initially sound like a good idea since it represents “nothingness”. However, it might turn out that nil is a legit value and there might be cases where it is desirable for the caller to pass nil. In such a case, we cannot use it as a default value if we want to implement a special logic for the case of not providing that value.

Fortunately, there is an easy way to deal with it – use a special constant. Read more

Post a comment

You can use basic HTML markup (e.g. <a>) or Markdown.

As you are not logged in, you will be
directed via GitHub to signup or sign in