[Issue 4545] Alias to members possible without "this" instance
https://issues.dlang.org/show_bug.cgi?id=4545 Andrei Alexandrescu changed: What|Removed |Added Version|D1 & D2 |D2 --
[Issue 4545] Alias to members possible without "this" instance
http://d.puremagic.com/issues/show_bug.cgi?id=4545 yebblies changed: What|Removed |Added Status|REOPENED|RESOLVED CC||yebbl...@gmail.com Resolution||DUPLICATE --- Comment #11 from yebblies 2012-01-31 14:19:14 EST --- *** This issue has been marked as a duplicate of issue 4062 *** -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 4545] Alias to members possible without "this" instance
http://d.puremagic.com/issues/show_bug.cgi?id=4545 Walter Bright changed: What|Removed |Added Status|RESOLVED|REOPENED Resolution|INVALID | --- Comment #10 from Walter Bright 2012-01-24 02:27:17 PST --- My mistake. I should read more carefully. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 4545] Alias to members possible without "this" instance
http://d.puremagic.com/issues/show_bug.cgi?id=4545 --- Comment #9 from Denis 2012-01-24 13:07:34 MSK --- (In reply to comment #8) > (In reply to comment #7) > > --- > > alias s.i a;// illegal, s.i is an expression > > --- > > is still in the docs and compilable. > > And it's not a bug. As I understood everywhere in `statement.dd` "illegal" means incorrect statement and it shouldn't be compilable. So "illegal" in `expression.dd` is expected to do so too. You reply means for me that those "illegal" statements doesn't compile with dmd but it is implementation specific and an other D compiler may compile them fine and it will result in undefined behavior. It will be a hell. Or am I mistaken somewhere? -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 4545] Alias to members possible without "this" instance
http://d.puremagic.com/issues/show_bug.cgi?id=4545 Walter Bright changed: What|Removed |Added Status|REOPENED|RESOLVED Resolution||INVALID --- Comment #8 from Walter Bright 2012-01-24 01:42:22 PST --- (In reply to comment #7) > --- > alias s.i a;// illegal, s.i is an expression > --- > is still in the docs and compilable. And it's not a bug. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 4545] Alias to members possible without "this" instance
http://d.puremagic.com/issues/show_bug.cgi?id=4545 Denis changed: What|Removed |Added Status|RESOLVED|REOPENED CC||verylonglogin@gmail.com Resolution|FIXED | --- Comment #7 from Denis 2012-01-24 12:34:28 MSK --- --- alias s.i a;// illegal, s.i is an expression --- is still in the docs and compilable. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 4545] Alias to members possible without "this" instance
http://d.puremagic.com/issues/show_bug.cgi?id=4545 Walter Bright changed: What|Removed |Added Status|NEW |RESOLVED CC||bugzi...@digitalmars.com Resolution||FIXED --- Comment #6 from Walter Bright 2012-01-23 21:38:52 PST --- I'm not sure what to do with this. I did make some minor tweaks to the delegate description. If more should be done, please be specific. I don't agree that the behavoior Tomasz is reporting is a bug; it's expected. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 4545] Alias to members possible without "this" instance
http://d.puremagic.com/issues/show_bug.cgi?id=4545 --- Comment #5 from github-bugzi...@puremagic.com 2012-01-23 21:37:57 PST --- Commit pushed to https://github.com/D-Programming-Language/d-programming-language.org https://github.com/D-Programming-Language/d-programming-language.org/commit/eedb99442ac037495ae12c3a7732aad72a074bf6 fix Issue 4545 - Alias to members possible without 'this' instance -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 4545] Alias to members possible without "this" instance
http://d.puremagic.com/issues/show_bug.cgi?id=4545 --- Comment #4 from Stewart Gordon 2010-08-07 07:21:22 PDT --- (In reply to comment #3) > (In reply to comment #2) > > I'm not sure. The existence of .funcptr seems to contradict > > > > http://www.digitalmars.com/d/1.0/type.html#delegates > > "There are no pointers-to-members in D, but a more useful concept called > > delegates are supported." > > Just after that it says: "Delegates are an aggregate of two pieces of data: an > object reference and a function pointer.". It really should say "a pointer to a non-static member function". > You must always have a pointer to a > member, then you add a context and gets a delegate. How about static members, > you can have pointers to those, regular function pointers. I don't know why > the > docs are written like that. Probably because the concept is a little different > compared to C++'s member pointers. D's delegates are basically just syntax > sugar for a C++'s member pointer and a instance of the same class. No, because delegate types don't care the least what class the function is a member of. This is why they're more useful - whatever is using the delegate need not know anything about the class, and so (for instance) a library can use a delegate just like a plain function pointer. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 4545] Alias to members possible without "this" instance
http://d.puremagic.com/issues/show_bug.cgi?id=4545 --- Comment #3 from Jacob Carlborg 2010-08-07 07:01:32 PDT --- (In reply to comment #2) > I'm not sure. The existence of .funcptr seems to contradict > > http://www.digitalmars.com/d/1.0/type.html#delegates > "There are no pointers-to-members in D, but a more useful concept called > delegates are supported." Just after that it says: "Delegates are an aggregate of two pieces of data: an object reference and a function pointer.". You must always have a pointer to a member, then you add a context and gets a delegate. How about static members, you can have pointers to those, regular function pointers. I don't know why the docs are written like that. Probably because the concept is a little different compared to C++'s member pointers. D's delegates are basically just syntax sugar for a C++'s member pointer and a instance of the same class. > See also bug 2557. > > Applies to D1 as well, though new A must be cast. Moreover, you don't need to > go through an alias - DMD 1.062 accepts even > dg.funcptr = &A.foo; I used an alias because an alias was used in the first example. > But non-static members of structs/classes/unions are still compile-time > entities, and they have properties. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 4545] Alias to members possible without "this" instance
http://d.puremagic.com/issues/show_bug.cgi?id=4545 Stewart Gordon changed: What|Removed |Added CC||s...@iname.com Version|D2 |D1 & D2 --- Comment #2 from Stewart Gordon 2010-08-07 05:31:59 PDT --- I'm not sure. The existence of .funcptr seems to contradict http://www.digitalmars.com/d/1.0/type.html#delegates "There are no pointers-to-members in D, but a more useful concept called delegates are supported." See also bug 2557. Applies to D1 as well, though new A must be cast. Moreover, you don't need to go through an alias - DMD 1.062 accepts even dg.funcptr = &A.foo; But non-static members of structs/classes/unions are still compile-time entities, and they have properties. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 4545] Alias to members possible without "this" instance
http://d.puremagic.com/issues/show_bug.cgi?id=4545 Jacob Carlborg changed: What|Removed |Added CC||d...@me.com --- Comment #1 from Jacob Carlborg 2010-08-01 15:29:55 PDT --- I think your first example should be legal because you can create a delegate out of the alias and an instance of A. void delegate () dg; dg.ptr = new A; dg.funcptr = &goo; dg(); // this works -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
