Re: rdmd problems (OS X Leopard, DMD 2.052)
On 2011-02-20 22:42:06 +0100, Nick Sabalausky said: [snip] We used to have occasional breking changes in the language itself (in D2-only), since D2 was the deliberately the development branch rather than the stable branch that D1 has been, but D2's language spec is pretty much finalized now. I just realized I didn't give a direct answer to your question: I'd say that most minor releases of DMD are *not* backward-incompatible. Thanks for both the thorough and the more direct answer. Very helpful/useful :) -- Magnus Lie Hetland http://hetland.org
Re: Is std.array.replace supposed to work with char[]?
On Sun, 20 Feb 2011 15:23:29 -0500, Steven Schveighoffer wrote:
On Sun, 20 Feb 2011 14:51:10 -0500, bearophile
bearophileh...@lycos.com wrote:
Jacob Carlborg:
Every time I try to use D2 it's just a PITA to use. I've used D1 and
Tango for
several years and had no problem with that.
I use this thread to ask regarding one specific little problem I have
with strings. I want to generate a random string of AB using the array,
map, etc, this looks like a possible implementation (in std.random
there is no choice() function yet):
import std.stdio, std.random, std.string, std.algorithm, std.range;
void main() {
auto m = map!((i){ return AB[uniform(0,2)]; })(iota(10)); string
s = join(array(m));
writeln(s);
}
It gives this error:
...\dmd\src\phobos\std\array.d(62): Error: result[i] isn't mutable
test.d(5): Error: template instance
std.array.array!(Map!(__dgliteral1,Iota!(int,uint))) error
instantiating
What's the right way to write it in D?
The same code in Python2.x:
from random import choice
s = .join(choice(AB) for _ in xrange(10)) print s
Just a blind guess, I have not tested, but maybe it's because the
compiler is using const(char) as the return type for your delegate
literal since you never specify one?
It's probably using immutable(char) since that's the element type of AB.
-Lars
Multiple opCall's
Hey guys,
I've a small problem implementing multiple opCall()-methods. At first, I've the
following interface:
interface Invoker {
void opCall(uint i);
}
... and an abstract class which inherits from the Invoker-interface like the
following:
abstract class AbstractInvoker : Invoker {
private int myInt;
override void opCall(uint i) { /** do nothing */ }
void opCall() {
opCall(myInt);
}
}
I know... I can remove the opCall(uint i) from the interface, but it's needed
for some other classes which implements this method. For
those classes the opCall(uint i)-method is needed.
But... when I now declare a class like this:
class InvokableClass : AbstractInvoker {
override void opCall(uint i) {
// do something
}
}
and do the following:
void main(string[] args) {
InvokableClass() ic = new InvokeableClass();
ic();
}
I always get the following errors:
Error: function InvokableClass.opCall (uint i) is not callable using argument
types ().
Error: expected 1 function arguments, not 0
But I think opCall() is implemented in the abstract class and should be
callable using opCall() instead using opCall(uint i)?
OpenGL in D2
Hi,
I'm trying to figure out how I could get a simple OpenGL/GLUT program working
in DMD2. As an attachment, I've added a C version of what I'd like to do. I'd
compile the C version using:
gcc simple.c -lglut -lGLU -o simple
I've found a few OpenGL projects, like bindings
(http://www.dsource.org/projects/bindings/) and derelict
(http://www.dsource.org/projects/derelict/), but I still can't find any way to
easily use or install them (for D2 on Ubuntu). I'd have thought that, since D
interfaces so well with C, just using C libraries wouldn't require specific
wrapper libraries, but it seems an automated method for converting C headers
to D isn't currently possible?
Anyway, any help would be appreciated,
Thanks.
begin 644 simple.c
M(VEN8VQU94@/$=,+V=L+F@^B-I;F-L=61E(#Q'3]G;'5T+F@^@IS=%T
M:6,@:6YT('=I;CL*G9O:60@:6YI=AI;G0@87)G8RP@8VAAB`J*F%R9W8I
MGL*(\O(EN:71I86QIF4@9VQU=`H@9VQU=$EN:70H)F%R9V,L(%R9W8I
M.PH@+R\@W!E8VEF2!T:4@9ESQA2!M;V1E('1O()E(%)'0B!A;F0@
MVEN9VQE()U9F9EFEN9R`*(\O('=E('5S92!S:6YG;4@8G5F9F5R:6YG
M('-I;F-E('1H:7,@=VEL;!B92!N;VX@86YI;6%T960*(=L=71);FET1ES
MQA4UO94H1TQ55%]21T)!('P@1TQ55%]324Y'3$4I.PH@+R\@95F:6YE
M('1H92!S:7IEB!G;'5T26YI=%=I;F1O=U-IF4H-3`P+#4P,D[B`O+R!T
M:4@]S:71I;VX@=VAEF4@=AE('=I;F1O=R!W:6QL(%P5A@H@9VQU
M=$EN:717:6YD;W=0;W-I=EO;B@Q,#`L,3`P*3L*(\O(EF('=E('=O=6QD
M('=A;G0@9G5L;'-CF5E;CH*(\O(=L=71=6QL4V-R965N*D[B`O+R!C
MF5A=4@=AE('=I;F1O=RP@V5T('1H92!T:71L92!A;F0@:V5E!T:4@
MB`O+R!W:6YD;W@:61E;G1I9FEEBX*('=I;B`](=L=71#F5A=57:6YD
M;WH(E1I=QE(=O97,@:5R92(I.PH@+R]G;'5T1ESQA49U;F,H9ES
MD[B`O+V=L=71+97EB;V%R9$9U;F,H:V5Y8BD[GT*FEN=!M86EN*EN
M=!AF=C+!C:%R(HJ87)G=BE[B`O+R!I;FET($=,550@=\@:%N9QE
M('=I;F1O=PH@:6YI=AAF=C+%R9W8I.PH*(\O(]P96YG;!C;V1E(AP
M97)F;W)M960@;VYL2!O;B!S=%R='5P*0H@+R\@V5T(-L96%R+6-O;]U
M@H@9VQ#;5AD-O;]R*#`L,PP+#`I.PH@+R\@8VQE87(@9ESQA2!T
M;R!C;5ABUC;VQO=7(*(=L0VQE87(H1TQ?0T],3U)?0E51D527T))5D[
MB`O+R!S970@9')A=RUC;VQO=7(*(=L0V]L;W(S9B@Q+#$L,2D[B`O+R!S
M5C:69Y(-O+6]R9EN871E('-YW1E;2`H;6%PEN9R!I;6%G92!T;R!S
M8W)E96XIB!G;$]R=AO*TQ+`Q+TQ+`Q+TQ+`Q*3L*(\O()E9VEN
M(1E9FEN:6YG($@;F5W(]B:F5C=`H]L6=O;BD*(=L0F5G:6XH1TQ?
M4$],64=/3BD[B`@+R\@95F:6YE('!O;'EG;VXGR!C;W)N97)S(@IB`@
M9VQ697)T97@R9B@M,XU+`M,XU*3L*(!G;%9EG1E#)F*TP+C4L(#`N
M-2D[B`@9VQ697)T97@R9B@P+C4L(#`N-2D[B`@9VQ697)T97@R9B@P+C4L
M(TP+C4I.PH@+R\@96YD(1E9FEN:6YG(]B:F5C=`H@9VQ%;F0H*3L*(\O
M(]U='!U=!C;VUM86YDR!T;R!S8W)E96X*(=L1FQUV@H*3L*B`O+R!U
MV4@1TQ55!T;R!R=6X@;6%I;B!L;V]PB!G;'5T36%I;DQO;W`H*3L*(')E
*='5R;B`P.PI]@``
`
end
Re: OpenGL in D2
== Auszug aus Siqu (u...@example.net)'s Artikel Hi, I'm trying to figure out how I could get a simple OpenGL/GLUT program working in DMD2. As an attachment, I've added a C version of what I'd like to do. I'd compile the C version using: gcc simple.c -lglut -lGLU -o simple I've found a few OpenGL projects, like bindings (http://www.dsource.org/projects/bindings/) and derelict (http://www.dsource.org/projects/derelict/), but I still can't find any way to easily use or install them (for D2 on Ubuntu). I'd have thought that, since D interfaces so well with C, just using C libraries wouldn't require specific wrapper libraries, but it seems an automated method for converting C headers to D isn't currently possible? Anyway, any help would be appreciated, Thanks. simple.c I'm using derelict, primary on windows, but I've also a running version on Ubuntu. You can download derelict at http://www.dsource.org/projects/derelict/ changeset/525/branches/Derelict2?old_path=%2Fformat=zip I think you've already a running version of the dmd-compiler? If yes, you can simply extract the package, open your shell browse to the extracted folder and run make -flinux.mak DC=dmd which worked for me on windows and linux (make sure you've installed make and dmd is in your environment-values). On windows you've to create a folder called lib before you run the command above - I currently can't say it exactly if it's needed on linux, too. After it compiled, you can copy all the created lib-files to the lib- folder (I think this should be /usr/lib or something like this - run find / -name 'phobos.lib' and copy the lib-files to the same directory where phobos.lib is located. Copy the content of the import-dir to a location where you've all your binding for D, so that you can simply use import derelict.sdl.sdl or similar. When you've installed it correctly, you can use derelict/opengl like described on the derelict site. Note that you have to use 'pragma (lib, DerelictSDL)' or similar to use the binding. It is also important the you insert 'pragma(lib, dl)' in you source that you can compile it successfully. I hope this helped :)
Re: Multiple opCall's
Am 21.02.2011 11:18, schrieb useo:
Hey guys,
I've a small problem implementing multiple opCall()-methods. At first, I've the
following interface:
interface Invoker {
void opCall(uint i);
}
... and an abstract class which inherits from the Invoker-interface like the
following:
abstract class AbstractInvoker : Invoker {
private int myInt;
override void opCall(uint i) { /** do nothing */ }
In an abstract class you can just leave this out. The inheriting class
will then be checked to implement this.
void opCall() {
opCall(myInt);
}
}
I know... I can remove the opCall(uint i) from the interface, but it's needed
for some other classes which implements this method. For
those classes the opCall(uint i)-method is needed.
But... when I now declare a class like this:
class InvokableClass : AbstractInvoker {
override void opCall(uint i) {
// do something
}
}
and do the following:
void main(string[] args) {
InvokableClass() ic = new InvokeableClass();
ic();
}
I always get the following errors:
Error: function InvokableClass.opCall (uint i) is not callable using argument
types ().
Error: expected 1 function arguments, not 0
But I think opCall() is implemented in the abstract class and should be
callable using opCall() instead using opCall(uint i)?
Overriding one opCall shadows all other opCalls inherited from the base
class. This behaviour is like with any method. Write:
override void opCall() {
super.opCall();
}
to forward to the base class method.
AFAIK it's an anti-hijacking machanism.
Re: Multiple opCall's
== Auszug aus Mafi (m...@example.org)'s Artikel
Am 21.02.2011 11:18, schrieb useo:
Hey guys,
I've a small problem implementing multiple opCall()-methods. At
first, I've the following interface:
interface Invoker {
void opCall(uint i);
}
... and an abstract class which inherits from the Invoker-
interface like the following:
abstract class AbstractInvoker : Invoker {
private int myInt;
override void opCall(uint i) { /** do nothing */ }
In an abstract class you can just leave this out. The inheriting
class
will then be checked to implement this.
void opCall() {
opCall(myInt);
}
}
I know... I can remove the opCall(uint i) from the interface, but
it's needed for some other classes which implements this method. For
those classes the opCall(uint i)-method is needed.
But... when I now declare a class like this:
class InvokableClass : AbstractInvoker {
override void opCall(uint i) {
// do something
}
}
and do the following:
void main(string[] args) {
InvokableClass() ic = new InvokeableClass();
ic();
}
I always get the following errors:
Error: function InvokableClass.opCall (uint i) is not callable
using argument types ().
Error: expected 1 function arguments, not 0
But I think opCall() is implemented in the abstract class and
should be callable using opCall() instead using opCall(uint i)?
Overriding one opCall shadows all other opCalls inherited from the
base
class. This behaviour is like with any method. Write:
override void opCall() {
super.opCall();
}
to forward to the base class method.
AFAIK it's an anti-hijacking machanism.
Okay, thanks... this helped a lot!
Re: rdmd problems (OS X Leopard, DMD 2.052)
On 2011-02-20 19:22:20 +0100, Magnus Lie Hetland said: On 2011-02-19 22:25:31 +0100, Nick Sabalausky said: [snip] Unfortunately, rdmd doesn't seem to have gotten much attention lately. I've had a few patches for it sitting in bugzilla for a number of months. (Not that I'm complaning, I realize there's been other priorities.) I see. Kind of surprising, given that rdmd is distributed in the official DMD zip file. But, yeah, no complaints. :) Actually, if you want, you can grab a version of rdmd.d with my patches applied here: http://www.dsource.org/projects/semitwist/browser/trunk/rdmdAlt.d Thanks! Humm. I'm still using the rdmd I had (it seems to work, so as long as I have already compiled it... ;) However: I'm a bit baffled by the --shebang option. What's its purpose, really? If I use rdmd without it in a shebang line, it seems to work fine. If I *do* use --shebang, the code doesn't seem to be compiled/executed at all... It seems like it interprets args[1] as a single string containing all the arguments, splitting it into separate items. That seems well an good -- except (in OS X, at least) it doesn't seem to be needed (I get my arguments just fine without it, and the shebang-line switches work well) ... and it doesn't seem to work (that is, with --shebang, nothing happens). Any thoughts on this? -- Magnus Lie Hetland http://hetland.org
Re: OpenGL in D2
On 21.02.2011 13:33, Siqu wrote: Hi, I'm trying to figure out how I could get a simple OpenGL/GLUT program working in DMD2. As an attachment, I've added a C version of what I'd like to do. I'd compile the C version using: gcc simple.c -lglut -lGLU -o simple I've found a few OpenGL projects, like bindings (http://www.dsource.org/projects/bindings/) and derelict (http://www.dsource.org/projects/derelict/), but I still can't find any way to easily use or install them (for D2 on Ubuntu). I'd have thought that, since D interfaces so well with C, just using C libraries wouldn't require specific wrapper libraries, but it seems an automated method for converting C headers to D isn't currently possible? There is htod tool in the digitalmars website, but it's windows only. Also it still leaves much to be desired. IMHO Derelict is so far the best way to OpenGL and such in D, because of the nice way it loads handles all these weirdness with loading, say, OpenGL extensions. And automatically picking up any suitable shared lib is big win. Anyway, any help would be appreciated, Thanks. Sadly your file goes like rubbish for me, is that base64 ? -- Dmitry Olshansky
Re: OpenGL in D2
On Mon, 21 Feb 2011 14:45:51 +0300, Dmitry Olshansky dmitry.o...@gmail.com wrote: On 21.02.2011 13:33, Siqu wrote: Hi, I'm trying to figure out how I could get a simple OpenGL/GLUT program working in DMD2. As an attachment, I've added a C version of what I'd like to do. I'd compile the C version using: gcc simple.c -lglut -lGLU -o simple I've found a few OpenGL projects, like bindings (http://www.dsource.org/projects/bindings/) and derelict (http://www.dsource.org/projects/derelict/), but I still can't find any way to easily use or install them (for D2 on Ubuntu). I'd have thought that, since D interfaces so well with C, just using C libraries wouldn't require specific wrapper libraries, but it seems an automated method for converting C headers to D isn't currently possible? There is htod tool in the digitalmars website, but it's windows only. Also it still leaves much to be desired. IMHO Derelict is so far the best way to OpenGL and such in D, because of the nice way it loads handles all these weirdness with loading, say, OpenGL extensions. And automatically picking up any suitable shared lib is big win. Anyway, any help would be appreciated, Thanks. Sadly your file goes like rubbish for me, is that base64 ? All attachments are encoded, but your client should be able to decode it without any issues. Try other software, I recommend Opera's built-in mail client (which features NTTP support).
Re: Multiple opCall's
On Monday 21 February 2011 02:47:03 Mafi wrote:
Am 21.02.2011 11:18, schrieb useo:
Hey guys,
I've a small problem implementing multiple opCall()-methods. At first,
I've the following interface:
interface Invoker {
void opCall(uint i);
}
... and an abstract class which inherits from the Invoker-interface like
the following:
abstract class AbstractInvoker : Invoker {
private int myInt;
override void opCall(uint i) { /** do nothing */ }
In an abstract class you can just leave this out. The inheriting class
will then be checked to implement this.
void opCall() {
opCall(myInt);
}
}
I know... I can remove the opCall(uint i) from the interface, but it's
needed for some other classes which implements this method. For those
classes the opCall(uint i)-method is needed.
But... when I now declare a class like this:
class InvokableClass : AbstractInvoker {
override void opCall(uint i) {
// do something
}
}
and do the following:
void main(string[] args) {
InvokableClass() ic = new InvokeableClass();
ic();
}
I always get the following errors:
Error: function InvokableClass.opCall (uint i) is not callable using
argument types (). Error: expected 1 function arguments, not 0
But I think opCall() is implemented in the abstract class and should be
callable using opCall() instead using opCall(uint i)?
Overriding one opCall shadows all other opCalls inherited from the base
class. This behaviour is like with any method. Write:
override void opCall() {
super.opCall();
}
to forward to the base class method.
AFAIK it's an anti-hijacking machanism.
Or you can use alias. Inside of Invokable class, put
alias AbstractInvokableClass.opCall opCall;
That should put all of AbstractInvokableClass' in the overload set for
InvokableClass.
- Jonathan M Davis
Re: rdmd problems (OS X Leopard, DMD 2.052)
On Mon, 21 Feb 2011 12:18:54 +0100, Magnus Lie Hetland wrote: On 2011-02-20 19:22:20 +0100, Magnus Lie Hetland said: On 2011-02-19 22:25:31 +0100, Nick Sabalausky said: [snip] Unfortunately, rdmd doesn't seem to have gotten much attention lately. I've had a few patches for it sitting in bugzilla for a number of months. (Not that I'm complaning, I realize there's been other priorities.) I see. Kind of surprising, given that rdmd is distributed in the official DMD zip file. But, yeah, no complaints. :) Actually, if you want, you can grab a version of rdmd.d with my patches applied here: http://www.dsource.org/projects/semitwist/browser/trunk/rdmdAlt.d Thanks! Humm. I'm still using the rdmd I had (it seems to work, so as long as I have already compiled it... ;) However: I'm a bit baffled by the --shebang option. What's its purpose, really? If I use rdmd without it in a shebang line, it seems to work fine. If I *do* use --shebang, the code doesn't seem to be compiled/executed at all... It seems like it interprets args[1] as a single string containing all the arguments, splitting it into separate items. That seems well an good -- except (in OS X, at least) it doesn't seem to be needed (I get my arguments just fine without it, and the shebang-line switches work well) ... and it doesn't seem to work (that is, with --shebang, nothing happens). Any thoughts on this? Say you have a file myscript, that starts with the line #!/path/to/interpreter --foo --bar If you run this as ./myscript --hello --world then the args[] received by the interpreter program looks like this: args[0] = /path/to/interpreter args[1] = --foo --bar args[2] = ./myscript args[3] = --hello args[4] = --world This is the case on every shell I've tried on Linux, at least. So if you have multiple rdmd options, it should in principle need --shebang to know that it is being run in a shebang line, so it can expand args[1]. I don't know why it works without --shebang for you, though. :) -Lars
Re: OpenGL in D2
I've found a few OpenGL projects, like bindings (http://www.dsource.org/projects/bindings/) and derelict (http://www.dsource.org/projects/derelict/), but I still can't find any way to easily use or install them (for D2 on Ubuntu). Use derelict2 from svn and xfBuild. Then you just need to tell dmd where derelict is via -I I'd have thought that, since D interfaces so well with C, just using C libraries wouldn't require specific wrapper libraries, but it seems an automated method for converting C headers to D isn't currently possible? Derelict does a lot more, it hides all the nasty handling of different OpenGL versions that might be installed along with extension loading. To my knowledge there are several tools to convert C headers to D import modules: - htod, which is crappy. Since it's based on dmc, it nearly always complains about header files and the like; it doesn't translate preprocessor conditional compilation to versions or static if and almost always messes something up (const or whatever, can't remember) - SWIG, which I haven't tried yet for that purpose. But I think it will have the same problem with preprocessor conditional compilation. - c2d, don't know how good it works: http://dsource.org/projects/visuald/browser/trunk/c2d - bcd, which is obviously abandoned: http://www.dsource.org/projects/bcd
Re: rdmd problems (OS X Leopard, DMD 2.052)
On 2011-02-21 14:16, Lars T. Kyllingstad wrote: On Mon, 21 Feb 2011 12:18:54 +0100, Magnus Lie Hetland wrote: On 2011-02-20 19:22:20 +0100, Magnus Lie Hetland said: On 2011-02-19 22:25:31 +0100, Nick Sabalausky said: [snip] Unfortunately, rdmd doesn't seem to have gotten much attention lately. I've had a few patches for it sitting in bugzilla for a number of months. (Not that I'm complaning, I realize there's been other priorities.) I see. Kind of surprising, given that rdmd is distributed in the official DMD zip file. But, yeah, no complaints. :) Actually, if you want, you can grab a version of rdmd.d with my patches applied here: http://www.dsource.org/projects/semitwist/browser/trunk/rdmdAlt.d Thanks! Humm. I'm still using the rdmd I had (it seems to work, so as long as I have already compiled it... ;) However: I'm a bit baffled by the --shebang option. What's its purpose, really? If I use rdmd without it in a shebang line, it seems to work fine. If I *do* use --shebang, the code doesn't seem to be compiled/executed at all... It seems like it interprets args[1] as a single string containing all the arguments, splitting it into separate items. That seems well an good -- except (in OS X, at least) it doesn't seem to be needed (I get my arguments just fine without it, and the shebang-line switches work well) ... and it doesn't seem to work (that is, with --shebang, nothing happens). Any thoughts on this? Say you have a file myscript, that starts with the line #!/path/to/interpreter --foo --bar If you run this as ./myscript --hello --world then the args[] received by the interpreter program looks like this: args[0] = /path/to/interpreter args[1] = --foo --bar args[2] = ./myscript args[3] = --hello args[4] = --world This is the case on every shell I've tried on Linux, at least. So if you have multiple rdmd options, it should in principle need --shebang to know that it is being run in a shebang line, so it can expand args[1]. I don't know why it works without --shebang for you, though. :) -Lars Perhaps he's not passing any arguments to rdmd. -- /Jacob Carlborg
Re: datetime fails with undefined reference
== Quote from Jonathan M Davis (jmdavisp...@gmx.com)'s article On Friday, February 18, 2011 16:27:23 Russel Winder wrote: As noted in my earlier email on the other list, I too got this problem. Fromn what I can tell 1.066 and 2.051 have dmd.conf files but there is no such thing in the 1.067 and 2.052 distributions. So the out of the box configuration does seem to be broken. And as I said in my response to your other message, the proper dmd.conf file _is_ in the distributed zip file. So, unless you're dealing with the deb or rpm, and they're broken, and I don't know why you wouldn't be seeing a new dmd.conf with the 2.052 release. But I don't know what the state of the rpm or deb is. I just always use the zip file, which is very simple. - Jonathan M Davis Ok, I can fix the dmd.conf. Who does manage the RPM packaging? And how can I get a hold of them?
Re: Can I parametrize template mixin's identifiers?
On 2/19/2011 10:46 PM, Lutger Blijdestijn wrote:
Nick wrote:
I know I can parametrize template mixin types, but how about mixin
identifiers? This is the code:
mixin template Box(T) {
T val;
}
class Set(A, B) {
mixin Box!A a;
mixin Box!B b;
}
alias Set!(int, int) IntSet;
int main(string[] argv) {
scope auto s = new IntSet();
s.a.val = 3;
}
As you can see, the A and B types can be changed and with them the boxed
values. But they need disambiguation, since they have identically named
members. I know only to hard-code that disambiguation.
I need this because I intend to change (A, B) with a type list
eventually and I need to make operations on the boxed types independent
on the template mixin identifiers (a, b).
This pattern comes from C++ code, where Box(T) would be classes, Set (A,
B, ...) would recursively apply multiple inheritance on the type list.
Then each Box members could be addressed by casting to the correct Box(T).
Any idea if this is possible in D?
Thanks!
Possible yes, but probably not so pretty. There must be some places in
phobos where something like this is done (better), perhaps in the code for
tuples in std.typecons. Here is my unpolished attempt:
mixin template Box(T)
{
T val;
}
mixin template MixinFields(P...)
{
/* P[0] is the template to use as mixin
* P[1] is the type to be use as parameter for P[0]
* P[2] is the symbol name the mixin will be aliased to
*/
mixin(mixin ~ __traits(identifier, P[0]) ~ !( ~ P[1].stringof ~ )
~ P[2] ~ ;);
static if(P.length 3)
mixin MixinFields!(P[0], P[3..$]);
}
class Set(T...)
{
mixin MixinFields!(Box, T);
}
alias Set!(int, a, int, b) IntSet;
void main()
{
scope auto s = new IntSet();
s.a.val = 3;
}
Thanks!
I was staying away from string mixins as they seem (although powerful)
rather difficult to grok. But if I must, I must...
dmd2 assertion failure when comparing pointers
Maybe a little stupid, but I get an assert when I try to compare a valid
pointer with an int casted pointer.
I know, I could compare the pointer itself, but shouldn't is-poerator
also work?
Also, shouldn't an assert always reproted as a bug?
struct Test {}
void main()
{
Test t,t2;
bool a = t is t2; // - works!
bool b = cast(Test*)1 is t;
// - Assertion failure: '0' on line 875 in file 'constfold.c'
}
greets
Matthias
Re: dmd2 assertion failure when comparing pointers
Matthias Pleh: Also, shouldn't an assert always reproted as a bug? Added: http://d.puremagic.com/issues/show_bug.cgi?id=5633 Bye, bearophile
Re: Are function pointers compile time constants?
On 21/02/2011 00:24, Steven Schveighoffer wrote: On Sun, 20 Feb 2011 16:23:14 -0500, Nick Sabalausky a@a.a wrote: Simon s.d.hamm...@gmail.com wrote in message news:ijrdif$1nn6$1...@digitalmars.com... On 20/02/2011 14:59, d coder wrote: Greetings I tried to initialize a struct member with a function pointer, and found that DMD2 did not like it. Are not function pointers compile time constants? And why they should not be? Regards - Cherry No a function doesn't have an address until the .exe is loaded into memory. And with Address space randomisation on 'doze there is no reasonable way to make a function pointer a compile time value. I didn't know Windows did that, I thought it was just certain versions of Unix/Linux. Do you happen to know which version of Windows was first to have it? Probably the first one with dlls? I don't see how else you could have dlls, because you can't just say this function will always be at address 12345, and no other function anyone else ever compiles can take that spot. Vista. For any particular exe, you'll find that it's dependant dlls alway get loaded in the same place. That's why buffer overflow bugs (where/are) so easy to exploit. That being said, I'm not sure why the OP's issue couldn't be solved -- clearly position independent code works (and that is statically created), why couldn't a reference to that function also be created in a struct initializer? Is it a limitation of the linker? -Steve You can't use the relative jump of POS code. The offset to the function will be different at each call site. You could make function pointers compile time constants if: You disallow ASR You disallow them when compiling to a dll You disallow in-lining of any function of which you take the address You disallow the linker from rearranging functions You disallow the linker from merging duplicate functions. You merge the compiler and linker And it wouldn't work with template functions anyway as you can get multiple copies of those. That's a lot of stuff to give up. -- My enormous talent is exceeded only by my outrageous laziness. http://www.ssTk.co.uk
Re: dmd2 assertion failure when comparing pointers
Am 21.02.2011 19:00, schrieb bearophile: Matthias Pleh: Also, shouldn't an assert always reproted as a bug? Added: http://d.puremagic.com/issues/show_bug.cgi?id=5633 Bye, bearophile Ah, thanks!
Re: datetime fails with undefined reference
On Monday 21 February 2011 08:40:38 Kai Meyer wrote: == Quote from Jonathan M Davis (jmdavisp...@gmx.com)'s article On Friday, February 18, 2011 16:27:23 Russel Winder wrote: As noted in my earlier email on the other list, I too got this problem. Fromn what I can tell 1.066 and 2.051 have dmd.conf files but there is no such thing in the 1.067 and 2.052 distributions. So the out of the box configuration does seem to be broken. And as I said in my response to your other message, the proper dmd.conf file _is_ in the distributed zip file. So, unless you're dealing with the deb or rpm, and they're broken, and I don't know why you wouldn't be seeing a new dmd.conf with the 2.052 release. But I don't know what the state of the rpm or deb is. I just always use the zip file, which is very simple. - Jonathan M Davis Ok, I can fix the dmd.conf. Who does manage the RPM packaging? And how can I get a hold of them? I'm not sure who deals with the RPM stuff (though looking at the download on the site, the rpm hasn't been updated 2.052 - it's still on 2.051). If it's broken, post on the dmd 1.067 and 2.052 release thread in D.announce, since that's where people are generally looking for info on the release. If you haven't registered with the announce list, then you can just start a thread on it in the main D list. That's the place that the most people will notice and where you're most likely to get the attention of whoever it is needs to know (which may be Walter, but I don't know). However, I _would_ point out that it's extremely easy to just the zip file. I've never bothered with the rpm, personally. So, while the rpm should definitely should be fixed, if all you're really looking to do is have a working dmd, using the zip is likely a good option. You just download it and unzip it to wherever you want it (e.g. your home folder) and then add the path to the linux/bin folder within it (e.g. ~/dmd2/linux/bin) to your PATH variable (presumably in your .bashrc), and it then it'll work just fine. It'll grab phobos from the right place and the dmd.conf will be correct. Every time that a new version is released, you just replace the dmd2 folder with the newly unzipped version, and it works. - Jonathan M Davis
