[Issue 3607] Problems with struct opEquals and const

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=3607

Andrei Alexandrescu  changed:

   What|Removed |Added

Version|2.036   |D2

--

[Issue 3607] Problems with struct opEquals and const

[d-bugmail]

http://d.puremagic.com/issues/show_bug.cgi?id=3607


yebblies  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 CC||yebbl...@gmail.com
 Resolution||DUPLICATE


--- Comment #4 from yebblies  2011-06-12 22:44:02 PDT ---
*** This issue has been marked as a duplicate of issue 3659 ***

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[Issue 3607] Problems with struct opEquals and const

[d-bugmail]

http://d.puremagic.com/issues/show_bug.cgi?id=3607



--- Comment #3 from Richard Webb  2010-12-01 06:45:44 
PST ---
Shouldn't the spec say 'bool opEquals' instead of 'int opEquals' ?

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[Issue 3607] Problems with struct opEquals and const

[d-bugmail]

http://d.puremagic.com/issues/show_bug.cgi?id=3607


Don  changed:

   What|Removed |Added

Summary|Regression(2.037) Problems  |Problems with struct
   |with struct opEquals and|opEquals and const
   |const   |
   Severity|regression  |enhancement


--- Comment #2 from Don  2010-12-01 03:12:08 PST ---
The error message is correct, and the code compiles if you change the signature
to ref const Foo. The spec clearly states:
"If structs declare an opEquals member function, it should follow the following
form:

struct S {
int opEquals(ref const S s) { ... }
}"


A key point in the forum discussion, which was missing from the bug report was
this comment:

> I think it should be allowed to have a signature like this:
> bool opEquals(T other) const
> inside T as long as T can be implicitly cast from const to mutable.

Changing to an enhancement request.

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