howto compare references

Jack · Thu Sep 26, 2013 6:57 pm

Hello,

is there a method to check if
two Singular references belongs to the same name/object?

Jack

example:

Code:

system("reference");
ring rng =0,(x),dp;

reference ref1 = rng;
reference ref2 = rng;

// how to check if ref1 and ref2 a tied to same name/object?

Re: howto compare references

malex · Thu Jun 12, 2014 12:38 am

how about the "same" method?

Code:

> system(ref1, "help");
system(<ref>, ...): extended functionality for reference/shared data <ref>
  system(<ref>, count)         - number of references pointing to <ref>
  system(<ref>, enumerate)     - unique number for identifying <ref>
  system(<ref>, undefined)     - checks whether <ref> had been assigned
  system(<ref>, "help")        - prints this information message
  system(<ref>, "typeof")      - actual type referenced by <ref>
  system(<ref1>, same, <ref2>) - tests for identic reference objects
> system(ref1, "same", ref2);
0
>reference ref3 = ref1;
> system(ref1, "same", ref3);
1

Re: howto compare references

jack · Thu Jun 12, 2014 3:20 pm

malex wrote:

how about the "same" method?

ok, same checks if the reference objects are identic,
but then how to test if two references ref1 and ref2 are tied to the >same object<?

Code:

 system("reference");
 ring rng =0,(x),dp;

 reference ref1 = rng;
 reference ref2 = rng;
system(ref1,"same",ref2); //0