Re: [Swarm-Support] why there is no answer?

[Paul Johnson]

I didn't see a question before, but I generally ignore the ones that 
start out with "I'm using Microsoft Windows to ...".  Sorry.

From your code snip, we cannot tell what type "relationList" is.  If it 
is declared as

id <List> relationList;

and if you declare the relationIndex as

id <ListIndex> relationIndex;

then all should be well.

Please remember. When you tell the compiler something is "id" then it 
literally does not know anything about it. So include the prototype and 
it will help.

I THINK !

HU Xiaojun wrote:
> Hi,
>
> I have a question.I posted it several days before, but got no answer.
> I am wondering why.
> I hope some one could give me a help.
> I want to remove an object from a list and insert another object at the same
> postion.
>
> the code is:
>
> - function
> {
> ....
> id  relationIndex;
> id element;
> id newelement=nil;
> relationIndex = [relationList begin: [self getZone]];
> for(element = [relationIndex next]; [relationIndex getLoc] == Member; element =
> [relationIndex next])
> {
>      if(....)
>          { 
> [relationIndex remove];
> newelement=....
>          [relationIndex addAfter: newelement];
>          }   
> }
> [relationIndex drop];
> return self;
> }
>
> When I compile it, it complains that method "addAfter" not implemented by
> protocol.
> so I made some change,I decalre the relationIndex as:
>
> id  relationIndex;
> and keep the other things.
>
> when i compile it, it complains that in the line of 
> "relationIndex = [relationList begin: [self getZone]];" objects does not comform
> to the "listindex" protocol.
>
> Could somebody give me some advice?
> The version is swarm-2.1.1.
>
> Thanks!
>
> xiaojun
>
>
> _______________________________________________
> Support mailing list
> address@hidden
> http://www.swarm.org/mailman/listinfo/support


--
Paul E. Johnson                       email: address@hidden
Dept. of Political Science            http://lark.cc.ku.edu/~pauljohn
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