[Newbies] Debugging - any hints, tutorials ?

recursive68 at gmail.com recursive68 at gmail.com
Sat Mar 19 20:28:37 UTC 2011

Thanks for the tips and pointers.

On 19 March 2011 12:13, Ralph Johnson <johnson at cs.uiuc.edu> wrote:

> Here is what I can tell.
> You are using Seaside.  Somewhere in the page you are using a
> TreeReportColumn, and when you try to display the page, it is
> expecting a block with one argument (that is why it sent #value:) but
> got a block with a different number of arguments.  If I were debugging
> this, I would look at that block because probably it is something you
> wrote.  When you see it, you'll probably say "Oh, sure, that block
> should take an argument", though perhaps you will say "Why should
> *that* block take an argument?"  but in either case, it will probably
> be a block that you wrote.
> Note that there is no class "Block", what we call a block when we are
> looking at a Smalltalk metod is really an instance of class
> BlockClosure.
> > BlockClosure(Object)>>error:
> > BlockClosure>>numArgsError:
> > BlockClosure>>value:
> > SUTreeReportColumn>>render:on:
> > [] in [] in SUTreeReportColumn>>render:indent:on:
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