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Re: your mail
From: |
Paul Johnson |
Subject: |
Re: your mail |
Date: |
Tue, 30 Jun 1998 08:40:51 -0500 (CDT) |
There are examples of this in hello-world that I copied in my
majority rule application. (Look at neighbor.h for example)
Your idea is correct, but the implementation
is not quite right. You need to have the typedef in an h file, possibly
by itself, but not necessarily so. Then you include that h file
everywhere you want to use that newly defined type.
Good Luck.
PJ
On Tue, 30 Jun 1998 address@hidden wrote:
> new data type ....
> Problem: I want to define a new data type (for example, the data type is
> a structure), at a global level, such that this type can be used by any
> agents in any swarm. I used tutorial/simpleObserverBug programe to test this
> idea. In main.m, I added some codes like:
>
> typedef struct node Node;
> typedef Node *PtrNode;
> struct node {
> int xxx;
> float yyy;
> PtrNode link;
> };
>
> and in ModelSwarm.m, in a method definition (e.g., buildobjects), I try to
> define a temporal variable such as:
> Node n1;
> PtrNode ptr;
>
> however, when I compiled the newly modified codes, the error message says
> Node and PtrNode has not been declared.
>
> I am not sure whether this is my C knowledge is wrong (I am a moderate level
> C programmer), or Swarm agents does not recognize global data type definition.
>
> Thanks!
>
> Dr. Xueyue Huang
> Center for Transport Studies
> Imperial College
> London SW7
>
> ==================================
> Swarm-Support is for discussion of the technical details of the day
> to day usage of Swarm. For list administration needs (esp.
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> ==================================
>
Paul E. Johnson address@hidden
Dept. of Political Science http://lark.cc.ukans.edu/~pauljohn
University of Kansas Office: (913) 864-9086
Lawrence, Kansas 66045 FAX: (913) 864-5700
==================================
Swarm-Support is for discussion of the technical details of the day
to day usage of Swarm. For list administration needs (esp.
[un]subscribing), please send a message to <address@hidden>
with "help" in the body of the message.
==================================
- [no subject], x . huang, 1998/06/30
- Re: your mail,
Paul Johnson <=