Ruby Methods: return an usage string when insufficient arguments are given

Posted by Shyam on Stack Overflow See other posts from Stack Overflow or by Shyam
Published on 2010-04-14T14:50:41Z Indexed on 2010/04/14 14:53 UTC
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ruby

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methods

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error-handling

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arguments

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initialize

Hi,

After creating a serious bunch of classes, with initialize methods, loading them in IRb requires to look back at the code. However, I think it should be easy enough to return a usage message, instead of:

ArgumentError: wrong number of arguments (0 for 9)

So I prefer to return a string with the human readable arguments, by example using "puts" or just a return of a string. Now I have seen the rescue keyword inside begin-end code, but I wonder how I could catch the ArgumentError when the initialize method is called.

Thank you for your answers, feedback and comments!

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