Re: Initial release of Goldie: GOLD Parser Engine for D
Nick Sabalausky escribió: First release of Goldie is now available on DSource. http://www.dsource.org/projects/goldie Goldie (pronounced goal D) is a GOLD Engine for D. It gives D developers the ability to easily load, lex and parse a text/source file according to any grammar defined using the excellent GOLD Parser Builder tool ( http://www.devincook.com/goldparser/ ). Alternatively, Goldie can be used to merely load a GOLD .cgt file (Compiled Grammar Table) if you would like to create your own GOLD lexer/parser. Goldie is currently at it's first release, v0.01. It is fully-usable and has been tested on both Windows and Linux, although the API is still subject to change. Goldie is licensed under The zlib/libpng License. I googled for GOLD vs ANTLR and only found a thread five years ago that stated ANTLR was better if you wanted the full kitchen sink, and GOLD was just a bunch of hacks. Has somebody a link to a more recent comparison or do I have to write my own homework?
Re: Initial release of Goldie: GOLD Parser Engine for D
Grzegorz Adam Hankiewicz gra...@titanium.sabren.com wrote in message news:h78ojv$du...@digitalmars.com... I googled for GOLD vs ANTLR and only found a thread five years ago that stated ANTLR was better if you wanted the full kitchen sink, and GOLD was just a bunch of hacks. Has somebody a link to a more recent comparison or do I have to write my own homework? You're right, it does seem to be hard to find a good comparison of the two. Here's what I was able to find: Another one a few years old: http://www.antlr.org/pipermail/antlr-interest/2004-October/009730.html Newer, but somewhat one-sided in favor of GOLD: http://books.slashdot.org/comments.pl?sid=566251cid=23579953 Includes a lot of other parser generators: http://en.wikipedia.org/wiki/Comparison_of_parser_generators#Context-free_languages I have only very limited experience with ANTLR, and I've spent much more time with GOLD (Which I personally prefer, as you can probably tell from the fact that I wrote a GOLD engine ;) ), but here's my best attempt at an accurate neutral comparison: [Neutral?] - GOLD is LALR and ANTLR is LL(*) (For whatever that information is worthYou could probably find an LALR vs LL(*) comparison somewhere.) [Pro ANTLR] - ANTLR is open-source and cross-platform (because it runs on the JVM). But, GOLD is only available on Windows (although it might work on wine, I haven't tried) and doesn't have any released source (although it is freeware). However, FWIW, I do intend to make and release an open-source cross-platform equivalent to GOLD (fully-compatible with GOLD, of course). [Pro ANTLR] - ANTLR's grammar definition syntax includes certain bells and whistles that GOLD doesn't have, like extensive rewrite rules (with GOLD, you have to do rewrites yourself in your app). [Pro GOLD] - I personally find ANTLR very difficult to learn as it's documentation seems to be quite poor. GOLD has very good documentation (although that's probably to be expected since GOLD seems to be much simpler). [Pro ANTLR] - ANTLR seems to be much more popular and more heavily used. Sometimes a large user base can be good. [Pro GOLD] - GOLD has much better support for various host languages (by that I mean languages that can be used to write the programs that will parse/manipulate the generated grammars). GOLD already supports far more host languages than ANTLR, and I'm certain this is because adding support for a host language is far easier in GOLD. Also, there's no ANTLR for D (I tried a while ago, but gave up since it was such a huge painful undertaking, I basically would have had to port an entire production-level Java app to D). [Neutral] - With GOLD, host language is completely separated from grammar. This allows for far more flexibility (see some of the items below) and it makes the grammars much more reusable, but the cost is that you lose the convenience of being able to embed code directly into your grammar. [Pro GOLD] - Since ANTLR wants to convert all it's grammars directly to lexer/parser source code, it's not a good choice for programs that need to be able to work with grammars that the *users* of your program generate. For example, I used GOLD to write a program that outputs the parse tree of any source file written in any GOLD grammar. An equivalent ANTLR program would have been far more difficult to create and to use. [Pro GOLD] - Both GOLD and ANTLR come with GUI tools to help build grammars, but ANTLR's official GUI tool only works with grammars that have embedded Java (ie, grammars that are designed to be generated into a Java app, and not any other host language.) Because of GOLD's language-neutrality, it's GUI tool is helpful regardless of your desired host app. [Pro ANTLR?] - GOLD's GUI tool *is* GOLD, and so (unless I'm mistaken) you can't use it as a command-line app (but I've found compiling grammars with it to be very painless, anyway). I *think* ANTLR can be used command-line. (But again, FWIW, I do intend to create an GOLD-compatible program that will work on the command line) [Neutral] - ANTLR's GUI tool is probably a little more fully-featured (although maybe doesn't provide quite as detailed information, but then, maybe it doesn't need to), but in my experience, it's also very sluggish and resource-intensive.
Re: Initial release of Goldie: GOLD Parser Engine for D
Nick Sabalausky, el 28 de agosto a las 16:47 me escribiste: [Pro ANTLR?] - GOLD's GUI tool *is* GOLD, and so (unless I'm mistaken) you can't use it as a command-line app (but I've found compiling grammars with it to be very painless, anyway). I *think* ANTLR can be used command-line. (But again, FWIW, I do intend to create an GOLD-compatible program that will work on the command line) I don't know if you has seen Gazelle. It goal is similar to GOLD, to be able to reuse the grammars easily. It's C and still in development (it doesn't have any tools to write grammars or anything) but looks promising. http://www.reverberate.org/gazelle/ -- Leandro Lucarella (luca) | Blog colectivo: http://www.mazziblog.com.ar/blog/ GPG Key: 5F5A8D05 (F8CD F9A7 BF00 5431 4145 104C 949E BFB6 5F5A 8D05) Are you nervy, irritable, depressed, tired of life. Keep it up. -- Monty Python
Re: Initial release of Goldie: GOLD Parser Engine for D
Leandro Lucarella llu...@gmail.com wrote in message news:20090828211541.ga31...@homero.springfield.home... Nick Sabalausky, el 28 de agosto a las 16:47 me escribiste: [Pro ANTLR?] - GOLD's GUI tool *is* GOLD, and so (unless I'm mistaken) you can't use it as a command-line app (but I've found compiling grammars with it to be very painless, anyway). I *think* ANTLR can be used command-line. (But again, FWIW, I do intend to create an GOLD-compatible program that will work on the command line) I don't know if you has seen Gazelle. It goal is similar to GOLD, to be able to reuse the grammars easily. It's C and still in development (it doesn't have any tools to write grammars or anything) but looks promising. http://www.reverberate.org/gazelle/ Interesting, thanks for the link. That does sound similar to what I want to do, just that I'm doing it in D and using GOLD as a starting point and growing from there. Be interesting to see how both turn out.
Re: OT - Which Linux?
Paul D. Anderson wrote: Paul D. Anderson Wrote: I'm going to add Linux to my PC to get a dual-boot configuration. (I'm tired of slw start ups and want to tap into the great tools available.) The tutorial I'm looking at suggests Ubuntu. Is there a significant difference in Linux implementations? Is Ubuntu one of the better ones? Does it make a difference for running D2? Thanks in advance for your hellp. Paul Thanks to everyone who contributed to my off-topic question. I installed Ubuntu over the weekend. It took me a couple of tries to get it right (mostly because I couldn't decide how to partition the disk) but the installation process was so painless that it wasn't hard to redo it. Now I'm getting acquainted with the OS. :-) Thanks again! Paul Good luck! Always afraid of unfamilar territory, I first tried Linux in a dual-boot setup too, several years ago. I think it took about a week before I deleted the Windows partition, and I've been using Linux exclusively ever since. :) -Lars
Re: Reference value of structs not optimized or inlined?
Jeremie Pelletier wrote: Isn't it possible to make 'const ref S' or 'in S' generate the same machine code as 'in S*'? To me it would seem the semantics of the two are the same, with 'const S*' being useful syntax for C compatibility while 'in S' and 'const ref S' are both D syntax. The thing about const is it only specifies a read only view of an object, it does *not* specify that the referenced object will not change. That is why pass by value cannot be optimized to be pass by reference.
Re: OT - Which Linux?
Fri, 28 Aug 2009 08:18:57 -0500, Andrei Alexandrescu thusly wrote: Same here! And the step looked unconceivable just a couple months earlier. I remember how a friend who was in the beginning stages of Linux asked me several times and very incredulously: What do you mean you don't have Windows at all on your laptop? Linux has matured a lot since the early days. When I first tried it, it took me 4 years and 2 PC upgrades to get a compatible graphics card which was able to display anything other than the 80x25 text mode and 320x200x4b on xfree86. No, I don't want to manually type some weird bit counts and internal clock frequencies ever again! I bought my first nvidia card in 1999 and everything has worked almost flawlessly since then. And that's not even the worst part, 10 years ago there was no ntfs write support, many sound drivers sucked, hotplug sucked, 56k internal modem drivers sucked, even the mouse drivers acted randomly, fscking ext2 (ext3 didn't exist yet!) was dreadfully slow, and the distro cds came with broken compiler packages. The fresh new installation was mostly useful for learning bash and perl, but not much more, a graphical desktop would have been something awesome.
Re: Reference value of structs not optimized or inlined?
Walter Bright wrote:
Jeremie Pelletier wrote:
Isn't it possible to make 'const ref S' or 'in S' generate the same
machine code as 'in S*'? To me it would seem the semantics of the two
are the same, with 'const S*' being useful syntax for C compatibility
while 'in S' and 'const ref S' are both D syntax.
The thing about const is it only specifies a read only view of an
object, it does *not* specify that the referenced object will not
change. That is why pass by value cannot be optimized to be pass by
reference.
To elaborate on this, consider this case:
import std.stdio;
struct X { int v; }
void test(X x, void delegate() dg) { writefln(x.v); dg(); writefln(x.v); }
void main() {
X ecks;
test(ecks, { ecks.v = 17; });
}
Re: Reference value of structs not optimized or inlined?
downs Wrote:
Walter Bright wrote:
Jeremie Pelletier wrote:
Isn't it possible to make 'const ref S' or 'in S' generate the same
machine code as 'in S*'? To me it would seem the semantics of the two
are the same, with 'const S*' being useful syntax for C compatibility
while 'in S' and 'const ref S' are both D syntax.
The thing about const is it only specifies a read only view of an
object, it does *not* specify that the referenced object will not
change. That is why pass by value cannot be optimized to be pass by
reference.
To elaborate on this, consider this case:
import std.stdio;
struct X { int v; }
void test(X x, void delegate() dg) { writefln(x.v); dg(); writefln(x.v); }
void main() {
X ecks;
test(ecks, { ecks.v = 17; });
}
Ok, I understand why it cant be done for 'in S' but I don't see why 'const ref
S' cannot have the same semantics as 'in S*', unless 'ref' doesn't mean that
the struct is implicitly dereferenced.
Here is some code to illustrate my point of view:
struct S { int i; }
S s;
void Stuff() { s.i++; }
void Foo(in S* s) {
writefln(s.i);
Stuff();
writefln(s.i);
}
void Bar(const ref S s) {
writefln(s.i);
Stuff();
writefln(s.i);
}
int main() {
// Those both do the exact same thing
Foo(s);
Bar(s);
}
If they are meant to have different semantics, then when is a good time to use
ref? It would seem to me 'in S*' and 'S*' carry both behaviors you want in a
referenced parameter: const and mutable. In any case only the reference is
passed by value, not the struct itself.
If the method calls another method which modifies the const view on the
reference, then it should be a logic error from the programmer (good old
shooting yourself in the foot) without the compiler getting in the way. Making
fool-proof language semantics is a good idea, but IMO it shouldn't impact
performance, or else any bit of code looking for time critical performance will
never use the syntax that makes D shine, and a lot of confusion will spread
around as both types of syntax are used. It also makes it confusing to
interface with IDL.
Alls I'm suggesting is that 'const ref S' and 'ref S' generate the same machine
code as 'in S*' and 'S*', which would prevent us from using different syntax to
get the performance boost, when in the end the intended behavior is the same.
Re: Reference value of structs not optimized or inlined?
On Thu, Aug 27, 2009 at 8:17 PM, Walter Brightnewshou...@digitalmars.com wrote: Jeremie Pelletier wrote: Isn't there a way to implement RVO to work on parameters (PVO?) too if the storage is const? No, and it doesn't work for C++ either. Consider: You're addressing the 'const' issue, but you haven't addressed the OP's issue: that 'ref', for whatever reason, prevents inlining. Const aside, why is this so?
Re: Reference value of structs not optimized or inlined?
Jarrett Billingsley wrote: You're addressing the 'const' issue, but you haven't addressed the OP's issue: that 'ref', for whatever reason, prevents inlining. Const aside, why is this so? Because I never updated the inlining code to handle it.
Re: Reference value of structs not optimized or inlined?
On Fri, Aug 28, 2009 at 4:20 PM, Walter Brightnewshou...@digitalmars.com wrote: Jarrett Billingsley wrote: You're addressing the 'const' issue, but you haven't addressed the OP's issue: that 'ref', for whatever reason, prevents inlining. Const aside, why is this so? Because I never updated the inlining code to handle it. Well I'm glad it's that simple, and I'm sure Jeremie is too ;)
Re: Reference value of structs not optimized or inlined?
Jarrett Billingsley wrote: On Fri, Aug 28, 2009 at 4:20 PM, Walter Brightnewshou...@digitalmars.com wrote: Jarrett Billingsley wrote: You're addressing the 'const' issue, but you haven't addressed the OP's issue: that 'ref', for whatever reason, prevents inlining. Const aside, why is this so? Because I never updated the inlining code to handle it. Well I'm glad it's that simple, and I'm sure Jeremie is too ;) There are a lot of D specific optimization opportunities that are left undone for now.
Re: Reference value of structs not optimized or inlined?
On Fri, Aug 28, 2009 at 1:20 PM, Walter Brightnewshou...@digitalmars.com wrote: Jarrett Billingsley wrote: You're addressing the 'const' issue, but you haven't addressed the OP's issue: that 'ref', for whatever reason, prevents inlining. Const aside, why is this so? Because I never updated the inlining code to handle it. Wow. That's it? So let's get it done already! This is really a shame to have this hanging around in a language whose biggest selling point over the competition is speed. It's been shown many times that DMD's failure to inline ref args has significant impact (~10%) on the performance of numerical code. If you can easily give these kinds of code a 10% boost without too much effort then that's a big win in my opinion. --bb
Re: Reference value of structs not optimized or inlined?
On Fri, 28 Aug 2009, Bill Baxter wrote: On Fri, Aug 28, 2009 at 1:20 PM, Walter Brightnewshou...@digitalmars.com wrote: Jarrett Billingsley wrote: You're addressing the 'const' issue, but you haven't addressed the OP's issue: that 'ref', for whatever reason, prevents inlining. Const aside, why is this so? Because I never updated the inlining code to handle it. Wow. That's it? So let's get it done already! This is really a shame to have this hanging around in a language whose biggest selling point over the competition is speed. It's been shown many times that DMD's failure to inline ref args has significant impact (~10%) on the performance of numerical code. If you can easily give these kinds of code a 10% boost without too much effort then that's a big win in my opinion. --bb Ok.. so we should expect a patch from you sometime soon? You did include yourself in the 'us' inside let's, right?
Re: Reference value of structs not optimized or inlined?
Walter Bright escribió: Jarrett Billingsley wrote: On Fri, Aug 28, 2009 at 4:20 PM, Walter Brightnewshou...@digitalmars.com wrote: Jarrett Billingsley wrote: You're addressing the 'const' issue, but you haven't addressed the OP's issue: that 'ref', for whatever reason, prevents inlining. Const aside, why is this so? Because I never updated the inlining code to handle it. Well I'm glad it's that simple, and I'm sure Jeremie is too ;) There are a lot of D specific optimization opportunities that are left undone for now. Why? Seeing D as a systems language with features form high-level languages but without the performance penalty so you can prefer it over C/C++/Java/C# etc., if D's performance isn't that good then there's not much competition for people coming from either sides that expect high performance. bearophile and others from time to time complain about performance issues in D, just because D promises performance. I think this is more important that adding more features that won't give you higher performance. performance (sorry, had to repeat that word one more time :-P)
Re: Reference value of structs not optimized or inlined?
On Fri, Aug 28, 2009 at 3:21 PM, Brad Robertsbra...@puremagic.com wrote: On Fri, 28 Aug 2009, Bill Baxter wrote: On Fri, Aug 28, 2009 at 1:20 PM, Walter Brightnewshou...@digitalmars.com wrote: Jarrett Billingsley wrote: You're addressing the 'const' issue, but you haven't addressed the OP's issue: that 'ref', for whatever reason, prevents inlining. Const aside, why is this so? Because I never updated the inlining code to handle it. Wow. That's it? So let's get it done already! This is really a shame to have this hanging around in a language whose biggest selling point over the competition is speed. It's been shown many times that DMD's failure to inline ref args has significant impact (~10%) on the performance of numerical code. If you can easily give these kinds of code a 10% boost without too much effort then that's a big win in my opinion. --bb Ok.. so we should expect a patch from you sometime soon? You did include yourself in the 'us' inside let's, right? I'm actually surprised Don hasn't jumped on this one, given that it's primarily numerical code that it seems to be affecting. If I were still at my old job using D heavily, I would probably take a whack at fixing this one, just because it has been such an annoyance to me. I put up with it figuring it would be fixed someday, and I assumed there must be something tricky about it or else it would have been done already. But given Walter's answer just now, it sounds like a quick fix for him or someone else familiar with the compilers internals. --bb
Re: Reference value of structs not optimized or inlined?
On Fri, Aug 28, 2009 at 5:01 PM, Ary Borenszweiga...@esperanto.org.ar wrote: Walter Bright escribió: Jarrett Billingsley wrote: On Fri, Aug 28, 2009 at 4:20 PM, Walter Brightnewshou...@digitalmars.com wrote: Jarrett Billingsley wrote: You're addressing the 'const' issue, but you haven't addressed the OP's issue: that 'ref', for whatever reason, prevents inlining. Const aside, why is this so? Because I never updated the inlining code to handle it. Well I'm glad it's that simple, and I'm sure Jeremie is too ;) There are a lot of D specific optimization opportunities that are left undone for now. Why? Seeing D as a systems language with features form high-level languages but without the performance penalty so you can prefer it over C/C++/Java/C# etc., if D's performance isn't that good then there's not much competition for people coming from either sides that expect high performance. bearophile and others from time to time complain about performance issues in D, just because D promises performance. I think this is more important that adding more features that won't give you higher performance. I think it's perfectly justified to put off optimizations that are tricky or only pay off in odd circumstances. But from Walter's comment it sounds like this one shouldn't be any harder than enabling the pointer inlining path for ref args too. And the payoff would be decent. --bb
Re: Reference value of structs not optimized or inlined?
Ary Borenszweig wrote: Walter Bright escribió: There are a lot of D specific optimization opportunities that are left undone for now. Why? Which of the thousand things people want done in D should be done first?
Re: Reference value of structs not optimized or inlined?
Walter Bright wrote: Ary Borenszweig wrote: Walter Bright escribió: There are a lot of D specific optimization opportunities that are left undone for now. Why? Which of the thousand things people want done in D should be done first? Those that the askers are willing to implement first, I'd say.
1.0: Missing libs errors
Greetings and salutations. I am trying to compile a program that worked fine with 1.030 and juno 0.5.1, but I am trying to compile with 1.046. I am getting this errors: 17:31:50.57build -I..;c:\dmd\import -version=gui -version=Phobos OpenProjs.d OPTLINK (R) for Win32 Release 8.00.1 Copyright (C) Digital Mars 1989-2004 All rights reserved. C:\cygwin\home\us319318\source\d\juno\base\native.obj(native) Offset 002D8H Record Type 0091 Error 1: Previous Definition Different : _RT_STRING version.lib Warning 2: File Not Found version.lib crypt32.lib Warning 2: File Not Found crypt32.lib OpenProjs.obj(OpenProjs) Error 42: Symbol Undefined _D3dbi3all12__ModuleInfoZ C:\cygwin\home\us319318\source\d\juno\com\core.obj(core) Error 42: Symbol Undefined _var...@16 C:\cygwin\home\us319318\source\d\juno\com\core.obj(core) Error 42: Symbol Undefined _vardec...@8 i have no idea what to do because I don't have any calls to any libs called version or crypt32. Any ideas? thanks, josé
Re: What time is it?
On Fri, Aug 28, 2009 at 11:03 PM, jicmancabre...@_wrc.xerox.com wrote:
Chad J Wrote:
Max wrote:
Is there any way in Phobos to measure the current time with microsecond
accuracy?
Max
Might I suggest std.perf?
I found it here some years ago:
http://www.digitalmars.com/techtips/timing_code.html
It even seems to have survived the transition from D1 to D2.
Oddly enough, this rather useful module never seems to never be included
in the web documentation. :(
Just read the comments in the source file that comes with your compiler.
{dmd-path}/src/phobos/std/perf.d
I've always used PerformanceCounter with good results.
I also use it. Why does it not get inserted on D1 and D2?
thanks,
josé
std.perf was added *years* ago, in D's infancy. It wasn't even written
by Walter, so the docs never made it into the DM pages. The
documentation embedded in it isn't even DDoc, it's Doxygen. It's
always been sort of a misfit.
[Issue 3037] Off-by-one error in Stride.length
http://d.puremagic.com/issues/show_bug.cgi?id=3037 --- Comment #2 from Andrei Alexandrescu and...@metalanguage.com 2009-08-27 23:38:34 PDT --- (In reply to comment #1) I fixed length like this: return (_input.length - 1) / _n + 1; Thanks! In fact this doesn't work for _input.length == 0. So I rewrote it as: return (_input.length + _n - 1) / _n -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 3074] std.conv.to!(string)(int.min)
http://d.puremagic.com/issues/show_bug.cgi?id=3074 Andrei Alexandrescu and...@metalanguage.com changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 3132] std.string.split should be templated on mutable/const/immutable
http://d.puremagic.com/issues/show_bug.cgi?id=3132 Andrei Alexandrescu and...@metalanguage.com changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 3148] syntax error using invariant
http://d.puremagic.com/issues/show_bug.cgi?id=3148 Andrei Alexandrescu and...@metalanguage.com changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED --- Comment #1 from Andrei Alexandrescu and...@metalanguage.com 2009-08-27 23:48:00 PDT --- Thanks! -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 3184] std.algorithm.until should work like find
http://d.puremagic.com/issues/show_bug.cgi?id=3184 Andrei Alexandrescu and...@metalanguage.com changed: What|Removed |Added Status|NEW |RESOLVED Resolution||FIXED -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 2987] D2 phobos BigInt opMul doesn't work correctly
http://d.puremagic.com/issues/show_bug.cgi?id=2987 Don clugd...@yahoo.com.au changed: What|Removed |Added Status|ASSIGNED|RESOLVED CC||clugd...@yahoo.com.au Resolution||FIXED --- Comment #3 from Don clugd...@yahoo.com.au 2009-08-28 05:47:53 PDT --- Thanks! Actually both cases of updateShr should probably be updateUShr, although AFAICT the result of the second one is never actually used, so it's a bit irrelevant. Fixed in svn 1251. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 3189] `std.conv.to` : check for a custom `to` method in classes/structs
http://d.puremagic.com/issues/show_bug.cgi?id=3189
Andrei Alexandrescu and...@metalanguage.com changed:
What|Removed |Added
Status|ASSIGNED|RESOLVED
Resolution||FIXED
--- Comment #1 from Andrei Alexandrescu and...@metalanguage.com 2009-08-28
08:28:09 PDT ---
Ok. I implemented this:
/**
Object-_to-non-object conversions look for a method to of the source
object.
Example:
class Date
{
T to(T)() if(is(T == long))
{
return timestamp;
}
...
}
unittest
{
auto d = new Date;
auto ts = to!long(d); // same as d.to!long()
}
*/
T to(T, S)(S value) if (is(S : Object) !is(T : Object) !isSomeString!T
is(typeof(S.init.to!(T)()) : T))
{
return value.to!T();
}
--
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[Issue 3195] `std.conv` pureness
http://d.puremagic.com/issues/show_bug.cgi?id=3195 Andrei Alexandrescu and...@metalanguage.com changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||LATER --- Comment #1 from Andrei Alexandrescu and...@metalanguage.com 2009-08-28 08:34:52 PDT --- They should, but many are not automatically checkable. For example, the array-to-array conversion writes to a local temporary and then returns it. Technically that is pure, but the compiler cannot prove that as of this time. I will close this for now. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 3199] sort(chain(...)) doesn't work in some cases
http://d.puremagic.com/issues/show_bug.cgi?id=3199 Andrei Alexandrescu and...@metalanguage.com changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED --- Comment #2 from Andrei Alexandrescu and...@metalanguage.com 2009-08-28 09:10:41 PDT --- The first example creates three empty slices a, b, and c. Then abc is defined as a slice of slices initialized with those empty slices. Subsequently abc is filled but the initial slices a, b, and c remain empty. Therefore sort(chain(a, b, c)) sorts an empty range so it is ineffectual. The second example (after fixing) works indeed correctly because abc does not undergo modifications independently from a, b, and c. The third example is subtle. Assigning to the length of a slice, e.g. t,length = uniform(8, 17); may or may not spawn a new allocation (and therefore a divergence of what abc holds versus what a, b, and c hold individually). Therefore, the behavior will be erratic depending on what the random number generator yields. Assigning to length in slices has always had that danger. We have recently decided to prevent assignable length and defining a separate array type that has modifiable length. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 2979] Xml tags with only attributes return as without attributes ElementParser.parse
http://d.puremagic.com/issues/show_bug.cgi?id=2979 Andrei Alexandrescu and...@metalanguage.com changed: What|Removed |Added Status|NEW |RESOLVED CC||and...@metalanguage.com Resolution||FIXED --- Comment #6 from Andrei Alexandrescu and...@metalanguage.com 2009-08-28 09:17:31 PDT --- I have integrated hed010gy's first (small) fix but nothing else. We need to rewrite xml, so fixing it thoroughly first would be a bad investment. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 3218] Performance of std.xml.encode must be improved
http://d.puremagic.com/issues/show_bug.cgi?id=3218
Andrei Alexandrescu and...@metalanguage.com changed:
What|Removed |Added
Status|ASSIGNED|RESOLVED
Resolution||FIXED
--- Comment #1 from Andrei Alexandrescu and...@metalanguage.com 2009-08-28
09:54:16 PDT ---
I changed encode (which was indeed horrendous) to this:
S encode(S)(S s, S buffer = null)
{
string r;
size_t lastI;
if (buffer) buffer.length = 0;
auto result = Appender!(string)(buffer);
foreach (i, c; s)
{
switch (c)
{
case '': r = amp;; break;
case '': r = quot;; break;
case '\'': r = apos;; break;
case '': r = lt;; break;
case '': r = gt;; break;
default: continue;
}
// Replace with r
result.put(s[lastI .. i]);
result.put(r);
lastI = i + 1;
}
if (!result.data) return s;
result.put(s[lastI .. $]);
return result.data;
}
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[Issue 3219] Inaccurate std.conv.to!(numeric)(numeric) error messages
http://d.puremagic.com/issues/show_bug.cgi?id=3219 Andrei Alexandrescu and...@metalanguage.com changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 3225] std.string function name casing
http://d.puremagic.com/issues/show_bug.cgi?id=3225 Andrei Alexandrescu and...@metalanguage.com changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||REMIND --- Comment #2 from Andrei Alexandrescu and...@metalanguage.com 2009-08-28 10:51:52 PDT --- This makes sense but the names as chosen reflect existing Python and Ruby APIs. I'm not sure how to proceed about this. Thoughts? -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 3269] New: pure functions silently become nothrow
http://d.puremagic.com/issues/show_bug.cgi?id=3269
Summary: pure functions silently become nothrow
Product: D
Version: unspecified
Platform: Other
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: DMD
AssignedTo: nob...@puremagic.com
ReportedBy: and...@metalanguage.com
class A
{
pure static void raise(string s)
{
throw new Exception(s);
}
}
void main()
{
A.raise(a);
}
This code compiles and runs without an error!
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[Issue 3242] splitter does not handle input range made of a unique separator correctly
http://d.puremagic.com/issues/show_bug.cgi?id=3242 Andrei Alexandrescu and...@metalanguage.com changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 3245] Easy bug fix available for disabled unit test code in std.encoding
http://d.puremagic.com/issues/show_bug.cgi?id=3245 Andrei Alexandrescu and...@metalanguage.com changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED --- Comment #2 from Andrei Alexandrescu and...@metalanguage.com 2009-08-28 12:43:36 PDT --- Thanks for the precise instructions. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
[Issue 3249] sort and setIntersection on array of struct or class
http://d.puremagic.com/issues/show_bug.cgi?id=3249 Andrei Alexandrescu and...@metalanguage.com changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email --- You are receiving this mail because: ---
