[Issue 11588] New: Inconsistent abilities to compare `const`/`immutable` classes
d-bugmail at puremagic.com
d-bugmail at puremagic.com
Sat Nov 23 23:50:12 PST 2013
https://d.puremagic.com/issues/show_bug.cgi?id=11588
Summary: Inconsistent abilities to compare `const`/`immutable`
classes
Product: D
Version: D2
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: P2
Component: DMD
AssignedTo: nobody at puremagic.com
ReportedBy: verylonglogin.reg at gmail.com
--- Comment #0 from Denis Shelomovskij <verylonglogin.reg at gmail.com> 2013-11-24 11:50:11 MSK ---
Currently because of Issue 1824 `opEquals` and `opCmp` aren't `const`.
dmd rejects `opCmp` calls but accepts `opEquals` ones:
---
class C
{
int i;
override bool opEquals(Object o) { ++i; return true;}
override int opCmp(Object c) { ++i; return 0; }
}
void main()
{
const c1 = new C, c2 = new C;
assert(c1 == c2); // ok, calls `opEquals`
assert(c1 <= c2); // Error: mutable method main.C.opCmp is not callable
using a const object
}
---
Both should be either accepted or rejected. See Issue 11557 for proposal to
allow `opCmp` calls too.
--
Configure issuemail: https://d.puremagic.com/issues/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
More information about the Digitalmars-d-bugs
mailing list