On Wed, Oct 15, 2008 at 5:22 PM, Alex Chi <[EMAIL PROTECTED]> wrote: > Sorry for the that, I mean my problem is I put the exception in the wrong > part of my program, so everytime I try to call it in the method it does not > return the exception, so what i did was: > > 1. Create an new exception class, which is: FileNotFoundError > > Smalltalk.Core defineClass: #FileNotFound > superclass: #{Core.Error} > indexedType: #none > private: false > instanceVariableNames: '' > classInstanceVariableNames: '' > imports: '' > category: '' > > 2. I use that new exception to raise signal on a FileNotFoundError. > fileNotFound > > ^FileNotFound raiseSignal: 'The file is not exist' >
Which version of Smalltalk are you using? This doesn't look like Squeak to me. If you want an Exception object, you could just return a new instance: fileNotFound ^ FileDoesNotExistException new. Although this method is pretty pointless. I think you're misunderstanding how Exceptions work; you need to do more reading. I'm not sure if Smalltalk Exceptions are well documented anywhere, but I do know that they work in a similar way to exceptions in other programming languages such as Java or Python, so you could Google or get books from a library that describe these. Briefly, Exceptions are intended for handling situations where something goes wrong. See "FileDoesNotExistException class>>example" for an example. Gulik. -- http://people.squeakfoundation.org/person/mikevdg http://gulik.pbwiki.com/
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