From: matz@... (Yukihiro Matsumoto)
Date: 2001-12-13T17:33:38+09:00
Subject: [ruby-talk:28397] Re: Documentation of the different Exception types

Hi,

In message "[ruby-talk:28393] Re: Documentation of the different Exception types"
    on 01/12/13, "Harry Ohlsen" <harryo@zip.com.au> writes:

|> RuntimeError is an exception reserved for lazy programmers.  You good
|> programmers should not use this unless you're working on trivial
|> scripts.
|
|Agreed.  However, as Tobias said, it's a little hard to know what
|exceptions we should be raising/expecting, because there seems to be no
|real documentation as to when they are raised or what data they contain
|(one could obviously use reflection to work that out, but that seems a
|bit messy, especially since all that tells you is their names, not what
|they're intended purpose is).

"Ruby in a Nutshell" from O'Reilly has description about built-in
exceptions.  I don't know the exact page number, since I haven't get
the author copies yet.

|For example, when YOU write code, how do you work out what exceptions to
|write rescue clauses for?  Do you have an approach you take to work it
|out, or just a good memory :-) ??

I have weaker memory than you might expect.  That's why I bought Visor
Edge recently.  It's pretty nice toy.  Anyway, I often refer to the
"Ruby Pocket Reference" (Japanese version of the above book), or the
source itself.

							matz.