[Issue 346] New: 'is' operator inconsistant with arrays

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=346

           Summary: 'is' operator inconsistant with arrays
           Product: D
           Version: 0.166
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P3
         Component: DMD
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: ibisbasenji at gmail.com


It has been my understanding that the 'is' operator, when working with types
other than objects, is an alias for the '==' operator.  (For template
simplicity, as I recall.)  However, the following code illustrates a case where
it is different in behavior.  (My apologies if this is not really a bug, but I
don't know what else to call it.)

--------------------------------------------------
import std .stdio ;

void main () {
  static int[] foo = [1, 2, 3] ,
               bar = [1, 2, 3] ;

  int[] def = foo;

  if (foo == bar) writefln(" foo == bar");
  if (foo is bar) writefln(" foo is bar");

  if (foo == def) writefln(" foo == def");
  if (foo is def) writefln(" foo is def");
}

--------------------------------------------------
Outputs:
 foo == bar
 foo == def
 foo is def


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