Hi Johan,
On 20 Jan 2010, at 19:17, Johan Fabry wrote:
Hi all,
I am using a from: transformed: at some point, and I just got the transformation block being called with a nil value when the from pane gets a selection of nothing. my showOn: block does not state allowNil, so I did not expect this to happen.
allowNil when defined on the presentation, only controls the activation of the presentation. The information is still sent to the destination port.
Is it expected that transformation blocks always check for nil-ness of their arguments?
Yes.
What is missing is the condition on a transformation. It is since long on my to do list. I created an issue: http://code.google.com/p/moose-technology/issues/detail?id=303
Cheers, Doru
-- Johan Fabry jfabry@dcc.uchile.cl - http://dcc.uchile.cl/~jfabry PLEIAD Lab - Computer Science Department (DCC) - University of Chile
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