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Forums > Silicon-package-board > Shared code - SKILL

Subject: Problem about teh strcat command
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leonlee
Posts: 81
Online: User is Offline
2/13/2006 8:00 PM  
I'm a newcomer, and I'm studying the SKILL.
I wrote some code to report the dummy net pin and single pin( or unconnected pin), then asign the list to a form, browse them one by one. But one problem occured. For some projects, there is a error information for strcat command:
Error* strcat: argument #1 should be either a string or a symbol

The part of code is like this:

let((Pin_List Dummy_Pin_List Single_Pin_List)
Pin_List=Dummy_Pin_List=Single_Pin_List=nil
foreach( item Pin_List
if(item->net->name=="" then
Dummy_Pin_List=cons(strcat(item->component->name "." item->number) Dummy_Pin_List)
Dummy_Pin_List=sort(Dummy_Pin_List 'alphalessp)
else
if(length(item->branch->children)==1 then
Single_Pin_List=cons(strcat(item->component->name "." item->number " / " item->net->name) Single_Pin_List)
Single_Pin_List=sort(Single_Pin_List 'alphalessp)
);if
);if
);foreach
);let

Who can help me with this problem. thanks.
Leon Lee
Schneider-Electric
leonlee
Posts: 81
Online: User is Offline
2/13/2006 8:06 PM  
of course

The Pin_List is generateed by below code:

axlDBRefreshId(axlDBGetDesign())
axlClearSelSet()
axlSetFindFilter(?enabled '(noall pins) ?onButtons '(noall pins))
Pin_List=axlGetSelSet(axlAddSelectAll())
Leon Lee
Schneider-Electric
AshCan
Posts: 20
Online: User is Offline
2/13/2006 8:20 PM  
You are getting every pin record in the board database. Some of theins may be mechanical pins which have no number value. Then when you strcat item -> number strcat fails as you are seeing.

Try adding a conditional that traps null item -> numbers
For example
if(item -> number != nil then
leonlee
Posts: 81
Online: User is Offline
2/13/2006 8:24 PM  
OK, thank you very much for your answer.
I'll try it soon~~~
Leon Lee
Schneider-Electric
natan
Posts: 1
Online: User is Offline
2/13/2006 11:57 PM  
Another technique to address unwanted nil values is to use OR:
strcat(x y item->number||"" z)
Since 'or' stop evaluating on non-nil ("true") values from left to right.

And not related to your question - you should sort once after
the foreach statement (for improved performance).
leonlee
Posts: 81
Online: User is Offline
2/14/2006 4:29 AM  
Ok, the reason is:

for the mechanical pin, item->component=nil item->nuber=""(null)

I ignored it~~~
Leon Lee
Schneider-Electric
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Forums > Silicon-package-board > Shared code - SKILL > Problem about teh strcat command


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