20 Jan
2010
20 Jan
'10
8:04 p.m.
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(a)dcc.uchile.cl - http://dcc.uchile.cl/~jfabry
PLEIAD Lab - Computer Science Department (DCC) - University of Chile
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