Re: DMD chokes on UDAs of mixin enum members
That's probably it. I guess I'll have to work around it for now. On Saturday, 27 April 2013 at 00:21:02 UTC, anonymous wrote: On Friday, 26 April 2013 at 21:50:51 UTC, BLM768 wrote: [...] Is there some subtle point I'm missing, or is this just a bug? Looks like http://d.puremagic.com/issues/show_bug.cgi?id=9652
Re: DMD chokes on UDAs of mixin enum members
On Friday, 26 April 2013 at 21:50:51 UTC, BLM768 wrote: [...] Is there some subtle point I'm missing, or is this just a bug? Looks like http://d.puremagic.com/issues/show_bug.cgi?id=9652
Re: Internationalization vs. Unicode
On Fri, Apr 26, 2013 at 06:09:48PM -0400, Tyro[17] wrote: > There are myriad encoding schemes. D natively supports Unicode and > provide functionality via phobos. A byproduct of this is that since > ASCII is a subset of Unicode, it also natively support ASCII. This > is a plus for the language but what of the other encoding schemes? > What library functionality is provided to manipulate or convert > between those encoding schemes and Unicode? > > I have a need to convert from CKJ encoding (presently EUC-JP and > Shift-JIS) to Unicode. How do I accomplish this using D/Phobos? Is > there a standalone library that does this? If so, can someone point > me to it? If not, is there planned functionality for inclusion in > phobos or am I doomed to resorting to Java or some other language to > accomplish this task (or at least until I'm educated enough to do it > myself)? [...] If you're using a Posix system, you could look into the 'recode' utility to convert from those legacy formats to Unicode before using your program on them. You may be able to figure out how to do it by looking at recode's source code. But AFAIK there is no way to do it in D currently. Maybe someone should invent std.recode and submit it for inclusion into Phobos. ;-) T -- People tell me that I'm paranoid, but they're just out to get me.
Internationalization vs. Unicode
There are myriad encoding schemes. D natively supports Unicode and provide functionality via phobos. A byproduct of this is that since ASCII is a subset of Unicode, it also natively support ASCII. This is a plus for the language but what of the other encoding schemes? What library functionality is provided to manipulate or convert between those encoding schemes and Unicode? I have a need to convert from CKJ encoding (presently EUC-JP and Shift-JIS) to Unicode. How do I accomplish this using D/Phobos? Is there a standalone library that does this? If so, can someone point me to it? If not, is there planned functionality for inclusion in phobos or am I doomed to resorting to Java or some other language to accomplish this task (or at least until I'm educated enough to do it myself)? Thanks, Andrew
Re: writeln, UFCS and flip
Tyro[17]: With that clarification, I just have one more question, since flip does what is intuitively implied by a reverse function OK, better to name it reversedArgs :-) and flip2 does what is intuitively implied by a flip function, flip2 swaps just the fist two arguments and leaves the others at their place. I would expect a flip and flip2 if both accomplish the exact same thing but both outperforms the other in certain scenarios thus warranting both to be present. I think that the caos of this thread shows that keeping both will cause confusion :-( why not name them as such? Understand the Haskell influence and all but, influence notwithstanding, this is D so why not designate functions in a manner that intuitively imply functionality? I am starting to agree with Andrei. Short function names are handy, but in many situations the semantic confusion they can bring is not worth it. More food for thought for me. Bye, bearophile
DMD chokes on UDAs of mixin enum members
I've got some code that reduces to the following test case:
--
mixin template stuff() {
enum someEnum = "testing";
static void test() {
foreach(member; __traits(allMembers, typeof(this))) {
pragma(msg, member);
foreach(attribute; __traits(getAttributes, __traits(getMember,
typeof(this), member))) {
pragma(msg, attribute);
}
}
}
}
enum Attribute;
struct Test {
mixin stuff;
@Attribute size_t n;
}
--
DMD handles most of the members just fine, but it is unable to
process someEnum:
--
rdmd case.d
someEnum
case.d(7): Error: first argument is not a symbol
case.d(7): Error: invalid foreach aggregate false
test
n
Attribute
--
Is there some subtle point I'm missing, or is this just a bug?
Re: writeln, UFCS and flip
On 4/26/13 5:09 PM, Tyro[17] wrote: On 4/26/13 4:15 PM, bearophile wrote: Tyro[17]: > While flip2 does: > > flip2!foo(a, b, c) === foo(b, a, c) > flip2!foo(a, b, c, d) === foo(b, a, c, d) and this rotate Really? Just swapping the first two arguments and leaving the others at their place is for a "rotate"? Actually, by brain was thinking it but my eyes saw something completely different. You are correct, this what I would expect flip to do. Thanks. Why flip in the first place? I don't know, it's the name used in the Haskell Prelude. Bye, bearophile With that clarification, I just have one more question, since flip does what is intuitively implied by a reverse function and flip2 does what is intuitively implied by a flip function, why not name them as such? Understand the Haskell influence and all but, influence notwithstanding, this is D so why not designate functions in a manner that intuitively imply functionality? I would expect a flip and flip2 if both accomplish the exact same thing but both outperforms the other in certain scenarios thus warranting both to be present. Andrew
Re: Simple delete directory tree?
On Fri, 26 Apr 2013 17:01:43 -0400 Nick Sabalausky wrote: > On Fri, 26 Apr 2013 22:55:36 +0200 > "Andrej Mitrovic" wrote: > > > On Friday, 26 April 2013 at 20:54:41 UTC, Nick Sabalausky wrote: > > > Does phobos have a simple way to delete a directory tree? > > > std.file.rmdir(path) and std.file.remove(path) don't seem to do > > > it. > > > > Try rmdirRecurse > > I don't know how I managed to overlook that! Thanks :) > > Unfortunately, that's still choking with "Access is denied" on > something inside a ".git" subdirectory. > FWIW, This seems to work fine, at least on windows: import std.process; version(Windows) system(`rmdir /S /Q "`~path~`"`); else system(`rm -rf '`~path~`'`);
Re: Simple delete directory tree?
On Fri, 26 Apr 2013 23:15:20 +0200 Andrej Mitrovic wrote: > On 4/26/13, Nick Sabalausky > wrote: > > I don't know how I managed to overlook that! Thanks :) > > I'd actually prefer if it was an enum or some other default parameter > in the rmdir function itself: > > rmdir(string path, bool doRecurse = false); Yea, that'd be kinda nice.
Re: Simple delete directory tree?
On 4/26/13, Nick Sabalausky wrote: > I don't know how I managed to overlook that! Thanks :) I'd actually prefer if it was an enum or some other default parameter in the rmdir function itself: rmdir(string path, bool doRecurse = false);
Re: writeln, UFCS and flip
On 4/26/13 4:15 PM, bearophile wrote: Tyro[17]: > While flip2 does: > > flip2!foo(a, b, c) === foo(b, a, c) > flip2!foo(a, b, c, d) === foo(b, a, c, d) and this rotate Really? Just swapping the first two arguments and leaving the others at their place is for a "rotate"? Actually, by brain was thinking it but my eyes saw something completely different. You are correct, this what I would expect flip to do. Thanks. Why flip in the first place? I don't know, it's the name used in the Haskell Prelude. Bye, bearophile
Re: Simple delete directory tree?
On Fri, 26 Apr 2013 22:55:36 +0200 "Andrej Mitrovic" wrote: > On Friday, 26 April 2013 at 20:54:41 UTC, Nick Sabalausky wrote: > > Does phobos have a simple way to delete a directory tree? > > std.file.rmdir(path) and std.file.remove(path) don't seem to do > > it. > > Try rmdirRecurse I don't know how I managed to overlook that! Thanks :) Unfortunately, that's still choking with "Access is denied" on something inside a ".git" subdirectory.
Re: Simple delete directory tree?
On Friday, 26 April 2013 at 20:54:41 UTC, Nick Sabalausky wrote: Does phobos have a simple way to delete a directory tree? std.file.rmdir(path) and std.file.remove(path) don't seem to do it. Try rmdirRecurse
Simple delete directory tree?
Does phobos have a simple way to delete a directory tree? std.file.rmdir(path) and std.file.remove(path) don't seem to do it.
Re: writeln, UFCS and flip
On 04/26/2013 10:15 PM, bearophile wrote: Tyro[17]: > While flip2 does: > > flip2!foo(a, b, c) === foo(b, a, c) > flip2!foo(a, b, c, d) === foo(b, a, c, d) and this rotate Really? Just swapping the first two arguments and leaving the others at their place is for a "rotate"? Why flip in the first place? I don't know, it's the name used in the Haskell Prelude. And there it flips the first two arguments (of a curried function, since this is the standard for Haskell).
Re: writeln, UFCS and flip
Tyro[17]: > While flip2 does: > > flip2!foo(a, b, c) === foo(b, a, c) > flip2!foo(a, b, c, d) === foo(b, a, c, d) and this rotate Really? Just swapping the first two arguments and leaving the others at their place is for a "rotate"? Why flip in the first place? I don't know, it's the name used in the Haskell Prelude. Bye, bearophile
improve compile-time template
Hi, I would like to see a few improvement suggestions for my template which can be found here: http://dpaste.1azy.net/9bf89ef9 It works mostly pretty nice so far, but it's a bit clumsy and I'm sure that it could be improved. Also it does not work correct for cases like void foo(ref A a, int n) (as you can see by 'foo').
Re: writeln, UFCS and flip
On 4/26/13 8:59 AM, bearophile wrote: > ixid: > >> flip2 is the more general and useful function with new functionality >> so there's no need for what was flip and we should call the new >> function 'flip'. > > I don't agree. Maybe you are missing something. > > I expect a function named "flip" to do: > > flip!foo(a, b, c) === foo(c, b, a) > flip!foo(a, b, c, d) === foo(d, c, b, a) I would expect this to be called reverse > While flip2 does: > > flip2!foo(a, b, c) === foo(b, a, c) > flip2!foo(a, b, c, d) === foo(b, a, c, d) and this rotate Why flip in the first place? > Bye, > bearophile
Re: std.net.curl is not working?
On Friday, 26 April 2013 at 18:14:04 UTC, Jordi Sayol wrote: [...] You need to install the development curl package: $ sudo apt-get install libcurl4-openssl-dev or $ sudo apt-get install libcurl4-gnutls-dev or $ sudo apt-get install libcurl4-nss-dev [...] That´s it. Thank you!
Re: std.net.curl is not working?
On Friday, 26 April 2013 at 17:55:59 UTC, mab wrote: Thank you for answering. But it didnt work. I get: #dmd hello.d -L-lcurl /usr/bin/ld: cannot find -lcurl collect2: ld returned 1 exit status --- errorlevel 1 Curl is installed, as also libcurl3. I forget to mention that i am using "DMD64 D Compiler v2.062". Is std.net.curl working in this Version? Because it also didnt work on my Windows 7 System. Do you know what the libcurl library is actually called on your system? (try "find /usr -name "*curl*.so*" " or "find /usr -name "*curl*.a*" ) if the name you find is e.g. "libcurl3.so" then you'll have to use the linker flag -lcurl3 instead of lcurl p.s. Please don't be offended if you're already fully aware of this, it's just better to make sure the basics are covered first.
Re: std.net.curl is not working?
On 04/26/2013 10:55 AM, mab wrote: > Thank you for answering. But it didnt work. > > I get: > #dmd hello.d -L-lcurl > /usr/bin/ld: cannot find -lcurl Try providing the directory that the curl library file is in: #dmd hello.d -L-L/wherever/libcurl/is/in -L-lcurl Ali
Re: std.net.curl is not working?
On 26/04/13 19:55, mab wrote: > Thank you for answering. But it didnt work. > > I get: > #dmd hello.d -L-lcurl > /usr/bin/ld: cannot find -lcurl > collect2: ld returned 1 exit status > --- errorlevel 1 > > Curl is installed, as also libcurl3. You need to install the development curl package: $ sudo apt-get install libcurl4-openssl-dev or $ sudo apt-get install libcurl4-gnutls-dev or $ sudo apt-get install libcurl4-nss-dev > > I forget to mention that i am using "DMD64 D Compiler v2.062". > Is std.net.curl working in this Version? Because it also didnt work on my > Windows 7 System. > -- Jordi Sayol
Re: How/why can toStringz() and toUTFz() be used as properties?
On 04/26/2013 01:49 AM, anonymous wrote: > On Friday, 26 April 2013 at 07:31:57 UTC, Trey Brisbane wrote: > UFCS should be explained in the online language documentation, > but if it's in there I can't find it. Me neither. I wonder where in the language syntax a "function call" lives... UFCS does not require more than what you have already said but it looks like I had managed to fill up more space than a couple of paragraphs: :) http://ddili.org/ders/d.en/ufcs.html Ali
Re: std.net.curl is not working?
Thank you for answering. But it didnt work. I get: #dmd hello.d -L-lcurl /usr/bin/ld: cannot find -lcurl collect2: ld returned 1 exit status --- errorlevel 1 Curl is installed, as also libcurl3. I forget to mention that i am using "DMD64 D Compiler v2.062". Is std.net.curl working in this Version? Because it also didnt work on my Windows 7 System.
Re: does GtkD (win7) support opengl?
On 04/26/2013 05:16 AM, Alexandr Druzhinin wrote: 26.04.2013 3:45, Mike Wey пишет: http://gtkd.org/Downloads/SimpleGL.zip After updating dmd the demo no longer draws the triangle, i still need to figure out why. Link is broken Should be working now. -- Mike Wey
Re: std.net.curl is not working?
On Fri, 26 Apr 2013 19:25:16 +0200, mab wrote: > undefined reference to `curl_global_init' > undefined reference to `curl_global_cleanup' These functions are defined in libcurl. Make sure you have installed libcurl if it wasn't installed as a dependency for curl.
Re: std.net.curl is not working?
Fri, 26 Apr 2013 19:25:16 +0200: mab wrote
> Why i get the following Error, when i try to compile a simple "Hello
> World" that imports std.net.curl=
>
> The Error:
> # dmd hello.d /usr/lib/x86_64-linux-gnu/libphobos2.a(curl.o): In
> function `_D3std3net4curl4Curl19_sharedStaticCtor28FZv':
> std/net/curl.d:(.text._D3std3net4curl4Curl19_sharedStaticCtor28FZv+0xf):
> undefined reference to `curl_global_init'
> /usr/lib/x86_64-linux-gnu/libphobos2.a(curl.o): In function
> `_D3std3net4curl4Curl19_sharedStaticDtor29FZv':
> std/net/curl.d:(.text._D3std3net4curl4Curl19_sharedStaticDtor29FZv+0x5):
> undefined reference to `curl_global_cleanup'
> collect2: ld returned 1 exit status --- errorlevel 1
>
> The Code:
> import std.stdio;
> import std.net.curl;
>
> void main()
> {
>writeln("hello world");
> }
>
> My Testsystem: Debian # uname -a Linux dexplorer 2.6.32-5-amd64 #1 SMP
> Mon Feb 25 00:26:11 UTC 2013 x86_64 GNU/Linux
>
> curl is installed by apt-get install curl.
>
> Thanks!
You have to link libcurl via argument:
dmd hello.d -L-lcurl
std.net.curl is not working?
Why i get the following Error, when i try to compile a simple
"Hello World" that imports std.net.curl=
The Error:
# dmd hello.d
/usr/lib/x86_64-linux-gnu/libphobos2.a(curl.o): In function
`_D3std3net4curl4Curl19_sharedStaticCtor28FZv':
std/net/curl.d:(.text._D3std3net4curl4Curl19_sharedStaticCtor28FZv+0xf):
undefined reference to `curl_global_init'
/usr/lib/x86_64-linux-gnu/libphobos2.a(curl.o): In function
`_D3std3net4curl4Curl19_sharedStaticDtor29FZv':
std/net/curl.d:(.text._D3std3net4curl4Curl19_sharedStaticDtor29FZv+0x5):
undefined reference to `curl_global_cleanup'
collect2: ld returned 1 exit status
--- errorlevel 1
The Code:
import std.stdio;
import std.net.curl;
void main()
{
writeln("hello world");
}
My Testsystem: Debian
# uname -a
Linux dexplorer 2.6.32-5-amd64 #1 SMP Mon Feb 25 00:26:11 UTC
2013 x86_64 GNU/Linux
curl is installed by apt-get install curl.
Thanks!
Re: How/why can toStringz() and toUTFz() be used as properties?
On Fri, 26 Apr 2013 09:31:54 +0200, Trey Brisbane wrote: > I need to understand this, as I wish to write a function toWinStr() that > can be used in the same way which will accept any string type, and, > based on something like version(Unicode) and const-ness, output a WinAPI > LPSTR, LPCSTR, LPWSTR or LPCWSTR as appropriate. > Is such a thing possible? You might want to look at std.windows.charset. You'll find the following functions: const(char)* toMBSz(in char[] s, uint codePage = 0) string fromMBSz(immutable(char)* s, int codePage = 0) These might work for you or you may be able to expand on them.
Re: writeln, UFCS and flip
ixid: flip2 is the more general and useful function with new functionality so there's no need for what was flip and we should call the new function 'flip'. I don't agree. Maybe you are missing something. I expect a function named "flip" to do: flip!foo(a, b, c) === foo(c, b, a) flip!foo(a, b, c, d) === foo(d, c, b, a) While flip2 does: flip2!foo(a, b, c) === foo(b, a, c) flip2!foo(a, b, c, d) === foo(b, a, c, d) Bye, bearophile
Re: writeln, UFCS and flip
On Friday, 26 April 2013 at 10:52:09 UTC, bearophile wrote: Timon Gehr: I think what you call flip2 should be called flip. Why? Bye, bearophile flip2 is the more general and useful function with new functionality so there's no need for what was flip and we should call the new function 'flip'.
Re: How/why can toStringz() and toUTFz() be used as properties?
On Friday, 26 April 2013 at 08:49:10 UTC, anonymous wrote: On Friday, 26 April 2013 at 07:31:57 UTC, Trey Brisbane wrote: Hey all, Can someone please explain to me how and why it is that toStringz() and toUTFz() can be used in the following way? string a = "123"; auto b = a.toStringz; auto c = a.toUTFz; Also, how is it that they can even be called as if they were class methods? That is: string a = "123"; auto b = a.toStringz(); // <-- Note I've added parentheses auto c = a.toUTFz(); As opposed to being limited to: string a = "123"; auto b = toStringz(a); auto c = toUTFz(a); There's two things at work here: a) Universal Function Call Syntax (UFCS). That basically means that you can call a free function via method/property-like dot syntax. The first argument to the function goes before the dot. UFCS should be explained in the online language documentation, but if it's in there I can't find it. So, with UFCS you get from toStringz(a) to a.toStringz() . b) Empty parentheses are optional. -- Unless you compile with the -property flag. There has been some discussion about the future of the feature. Optional empty parentheses and/or the -property flag may go away in the future. That gets you from a.toString() to a.toString . I need to understand this, as I wish to write a function toWinStr() that can be used in the same way which will accept any string type, and, based on something like version(Unicode) and const-ness, output a WinAPI LPSTR, LPCSTR, LPWSTR or LPCWSTR as appropriate. Is such a thing possible? You just write your function so that toWinStr(stuff) works. UFCS and optional empty parentheses then enable stuff.toWinStr . Ahhh ok, thanks for explaining :)
Re: writeln, UFCS and flip
Timon Gehr: I think what you call flip2 should be called flip. Why? Bye, bearophile
Re: How/why can toStringz() and toUTFz() be used as properties?
On Friday, 26 April 2013 at 07:31:57 UTC, Trey Brisbane wrote: Hey all, Can someone please explain to me how and why it is that toStringz() and toUTFz() can be used in the following way? string a = "123"; auto b = a.toStringz; auto c = a.toUTFz; Also, how is it that they can even be called as if they were class methods? That is: string a = "123"; auto b = a.toStringz(); // <-- Note I've added parentheses auto c = a.toUTFz(); As opposed to being limited to: string a = "123"; auto b = toStringz(a); auto c = toUTFz(a); There's two things at work here: a) Universal Function Call Syntax (UFCS). That basically means that you can call a free function via method/property-like dot syntax. The first argument to the function goes before the dot. UFCS should be explained in the online language documentation, but if it's in there I can't find it. So, with UFCS you get from toStringz(a) to a.toStringz() . b) Empty parentheses are optional. -- Unless you compile with the -property flag. There has been some discussion about the future of the feature. Optional empty parentheses and/or the -property flag may go away in the future. That gets you from a.toString() to a.toString . I need to understand this, as I wish to write a function toWinStr() that can be used in the same way which will accept any string type, and, based on something like version(Unicode) and const-ness, output a WinAPI LPSTR, LPCSTR, LPWSTR or LPCWSTR as appropriate. Is such a thing possible? You just write your function so that toWinStr(stuff) works. UFCS and optional empty parentheses then enable stuff.toWinStr .
How/why can toStringz() and toUTFz() be used as properties?
Hey all, Can someone please explain to me how and why it is that toStringz() and toUTFz() can be used in the following way? string a = "123"; auto b = a.toStringz; auto c = a.toUTFz; Also, how is it that they can even be called as if they were class methods? That is: string a = "123"; auto b = a.toStringz(); // <-- Note I've added parentheses auto c = a.toUTFz(); As opposed to being limited to: string a = "123"; auto b = toStringz(a); auto c = toUTFz(a); I need to understand this, as I wish to write a function toWinStr() that can be used in the same way which will accept any string type, and, based on something like version(Unicode) and const-ness, output a WinAPI LPSTR, LPCSTR, LPWSTR or LPCWSTR as appropriate. Is such a thing possible?
