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Creating Class Objects

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Mohammad Al Houssami (Alumni)

Creating Class Objects

Hello Eveyone,

I just filed out a package did some changes and then filed in again. Im getting the error doesNotUnderstand: #CharacterToken and the name of the window says MessageNotUnderstood: receiver of " CharacterToken" is nil.

What I have in my code is this characterToken CharacterToken new.

characterToken is a variable I have. What is even more confusing is that I have the same thing for other things(endOfFileToken EndOfFileToken new.) but it doesn’t complain to these but only this one even though Im doing them in the same exact way. Any ideas what the problem can be ?

Thanks

Mohammad

stephane ducasse

Re: Creating Class Objects

characterToken CharacterToken new.

you are sending the message CharacterToken to charactertoken which is nil so it does not work.

characterToken := CharacterToken new will work.

Now read the chapter on the syntax on Pharo by example. The book is free but you have to read it to learn.

Stef

On Apr 24, 2013, at 4:13 PM, Mohammad Al Houssami (Alumni) <[hidden email]> wrote:

Hello Eveyone,
I just filed out a package did some changes and then filed in again. Im getting the errordoesNotUnderstand: #CharacterToken and the name of the window says MessageNotUnderstood: receiver of " CharacterToken" is nil.

What I have in my code is this characterToken CharacterToken new.
characterToken is a variable I have. What is even more confusing is that I have the same thing for other things(endOfFileToken EndOfFileToken new.) but it doesn’t complain to these but only this one even though Im doing them in the same exact way. Any ideas what the problem can be ?

Thanks
Mohammad