www.digitalmars.com         C & C++   DMDScript  

digitalmars.D.bugs - [Issue 12872] New: Feature request: Allow ref in arguments at the


          Issue ID: 12872
           Summary: Feature request: Allow ref in arguments at the
           Product: D
           Version: D2
          Hardware: x86
                OS: Windows
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: DMD
          Assignee: nobody puremagic.com
          Reporter: eco gnuk.net

It'd be nice to be able to do this...

  void foo(ref int a)
    a += 1;

  void main()
    int a;
    foo(ref a) // <---- callsite ref

...to show that a reference is being taken during that call and that the value
may change within the function call.

I think it would also be nice if you could require the callsite ref using a
compiler switch and that it would eventually be on by default (I suspect this
is far more controversial though and should be considered a separate request
from just allowing the "ref" in the call).

The same extends to "out". "in" could be added too but I don't see much value
in that.

Jun 06 2014