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 Post subject: link a reference object
PostPosted: Tue Oct 08, 2013 12:53 pm 
Hello,

when using references, I stumbled over he following question:
what does
Code:
    link(reference)

exacly do?

Code:
system("reference");
ring rng=0,x,dp;
attrib(rng,"name","rng");

reference rngRef=rng;
attrib(rngRef,"nameRef","rngRef");
attrib(rngRef,"nameRef");

def  linkedRng=link(rngRef); // what happens behind the scenes?
attrib(linkedRng,"nameRef"); // not present, why?
attrib(linkedRng,"name");   // not present, why?


Why does attrib not work for the linked object?
Should it work, or do I misunderstsand the concepts?

Jack


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 Post subject: Re: link a reference object
PostPosted: Wed Jun 11, 2014 6:39 pm 

Joined: Wed May 25, 2005 4:16 pm
Posts: 275
In Singular, <typename>(<object>) is always a cast to the named type
- with this exception. Its therefore number one on the "to remove" list.
So: please do not use "reference" and "shared".
Everything else:
http://www.singular.uni-kl.de/Manual/4-0-0/sing_253.htm


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