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Problem about teh strcat command

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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.


Originally posted in cdnusers.org by leonlee
Parents

  • 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


    Originally posted in cdnusers.org by AshCan
Reply

  • 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


    Originally posted in cdnusers.org by AshCan
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