Re: In need for CommonOriginalType

2014-05-02 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 02/05/14 19:24, Nordlöw via Digitalmars-d-learn wrote: Do I have to use recursion (like in CommonType) to implement this or is there a better way? Won't it work to use, is(CommonType!(OriginalType!T1, OriginalType!T2) ... ?

Re: In need for CommonOriginalType

2014-05-02 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 02/05/14 20:03, Joseph Rushton Wakeling via Digitalmars-d-learn wrote: On 02/05/14 19:24, Nordlöw via Digitalmars-d-learn wrote: Do I have to use recursion (like in CommonType) to implement this or is there a better way? Won't it work to use, is(CommonType!(OriginalType!T1

Re: Different random shuffles generated when compiled with gdc than with dmd

2014-05-30 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 30/05/14 18:13, monarch_dodra via Digitalmars-d-learn wrote: Are you sure you are compiling with the same version of dmd and gdc? Fixes were made to the rand.d library in the latest release, which could explain the difference you are observing. Which fixes are you thinking of here ... ? I

Indicating incompatible modules

2014-05-31 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello all, Is there a straightforward way to indicate that two modules should not be used together in the same program? Preferably one that does not require editing both of the modules? The application I have in mind is when one is making available an experimental module which is planned

Re: Different random shuffles generated when compiled with gdc than with dmd

2014-05-31 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 30/05/14 22:45, monarch_dodra via Digitalmars-d-learn wrote: Didn't you make changes to how and when the global PRNG is popped and accessed in randomShuffle? I figured it *could* be an explanation. No, it was partialShuffle that I tweaked, and that shouldn't affect the results here. There

Re: Different random shuffles generated when compiled with gdc than with dmd

2014-05-31 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 31/05/14 22:37, Joseph Rushton Wakeling via Digitalmars-d-learn wrote: On 30/05/14 22:45, monarch_dodra via Digitalmars-d-learn wrote: Didn't you make changes to how and when the global PRNG is popped and accessed in randomShuffle? I figured it *could* be an explanation. I think it's more

Re: Different random shuffles generated when compiled with gdc than with dmd

2014-05-31 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 31/05/14 23:22, Joseph Rushton Wakeling via Digitalmars-d-learn wrote: It's due to the the updated uniform() provided in this pull request: https://github.com/D-Programming-Language/phobos/commit/fc48d56284f19bf171780554b63b4ae83808b894 You can see the effects in action by running e.g

text() vs. format() for formatting assert/exception messages

2014-06-01 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello all, What's the current state of preference (if any) for using std.conv.text vs. std.string.format (or others?) when formatting error messages for assert/enforce/exceptions? I seem to recall a deprecation message pushing the use of std.string.format at some point in the past, but

Re: Different random shuffles generated when compiled with gdc than with dmd

2014-06-01 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 01/06/14 14:11, Ivan Kazmenko via Digitalmars-d-learn wrote: I second the thought that reproducibility across different versions is an important feature of any random generation library. Sadly, I didn't use a language yet which supported such a flavor of reproducibility for a significant

rawRead linker error

2014-06-01 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello all, I'm trying to read from /dev/random using File.rawRead as follows: auto f = File(/dev/urandom, r); ulong b; f.rawRead((b)[0 .. 1]); writeln(b); This generates a linker error: rawread.o: In function `_D3std5stdio4File14__T7rawReadTmZ7rawReadMFAmZAm':

Re: rawRead linker error

2014-06-01 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 01/06/14 19:04, Joseph Rushton Wakeling via Digitalmars-d-learn wrote: Passing a regular array as the buffer doesn't cause any issues In fact it seems to be a problem to pass any array other than a ubyte array; for example a ulong[] array is problematic. The problem vanishes

Re: Different random shuffles generated when compiled with gdc than with dmd

2014-06-02 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 02/06/14 08:57, Chris Cain via Digitalmars-d-learn wrote: On Sunday, 1 June 2014 at 14:22:31 UTC, Joseph Rushton Wakeling via Digitalmars-d-learn wrote: I missed the debate at the time, but actually, I'm slightly more concerned over the remark in that discussion that the new uniform

Compiler support for T(n) notation for initialization of variables

2014-06-07 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello all, Just a quick check -- which version of the dmd frontend introduces support for the notation T(n) to initialize a variable as type T? Is it 2.065 or the upcoming 2.066? I ask because as I'm always running git-HEAD DMD, I'm never entirely on top of what's in which version ... :-)

Re: Compiler support for T(n) notation for initialization of variables

2014-06-07 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 07/06/14 19:57, Peter Alexander via Digitalmars-d-learn wrote: Well, it doesn't work in 2.065, so must be 2.066 :-) P.S. thanks for letting me know about this feature. I had no idea it was going in! I only discovered it when I was advised to use it in a recent Phobos PR of mine. :-) The

Re: Compiler support for T(n) notation for initialization of variables

2014-06-07 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 07/06/14 19:57, bearophile via Digitalmars-d-learn wrote: Joseph Rushton Wakeling: which version of the dmd frontend introduces support for the notation T(n) to initialize a variable as type T? Is it 2.065 or the upcoming 2.066? In 2.066. Thanks for the confirmation :-)

Interesting bug with std.random.uniform and dchar

2014-06-08 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello all, Here's an interesting little bug that arises when std.random.uniform is called using dchar as the variable type: // import std.conv, std.random, std.stdio, std.string, std.typetuple; void main() {

Re: Interesting bug with std.random.uniform and dchar

2014-06-08 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 08/06/14 16:25, monarch_dodra via Digitalmars-d-learn wrote: Arguably, the issue is the difference between invalid and downright illegal values. The thing about dchar is that while it *can* have values higher than dchar max, it's (AFAIK) illegal to have them, and the compiler (if it can) will

Re: Interesting bug with std.random.uniform and dchar

2014-06-08 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 08/06/14 18:41, Joseph Rushton Wakeling via Digitalmars-d-learn wrote: On 08/06/14 10:47, Joseph Rushton Wakeling via Digitalmars-d-learn wrote: Here's an interesting little bug that arises when std.random.uniform is called using dchar as the variable type: Issue report submitted: https

Re: Basics of calling C from D

2014-06-11 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 11/06/14 16:22, Adam D. Ruppe via Digitalmars-d-learn wrote: On Wednesday, 11 June 2014 at 14:11:04 UTC, simendsjo wrote: I believe the correct answer should be Buy my book!. ah, of course! I should just make a .sig file lol

Re: DStyle: Braces on same line

2014-07-13 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 12/07/14 21:01, Danyal Zia via Digitalmars-d-learn wrote: I noticed that in Andrei's talks and his book, he used braces on the same line of delcaration, however Phobos and other D libraries I know use braces on their own line. Now I'm in a position where I need to take decision on coding

Re: DStyle: Braces on same line

2014-07-13 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 13/07/14 16:52, H. S. Teoh via Digitalmars-d-learn wrote: I had my own style before, but after I started contributing to Phobos, I found it a pain to keep switching back and forth between styles (and to convert styles before submitting PR's), so eventually I decided to just adopt Phobos style

Re: DStyle: Braces on same line

2014-07-13 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 13/07/14 14:23, Danyal Zia via Digitalmars-d-learn wrote: I'm going with Andrei's style of preference on his talks ;) Andrei can no doubt speak for himself about his preferences, but I'd be wary of assuming that the style he uses in his talks necessarily reflects his actual stylistic

Re: DStyle: Braces on same line

2014-07-13 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 13/07/14 19:24, Timon Gehr via Digitalmars-d-learn wrote: Wrong. There are things which are simply bad ideas. I think that we can take it as read that I meant, Any reasonable stylistic choice. Of course, YMMV about what counts as reasonable, but most of the things that people fuss over

Re: DStyle: Braces on same line

2014-07-13 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 13/07/14 19:51, Brian Rogoff via Digitalmars-d-learn wrote: Yes, the same argument for books and slides is also applicable to all other media. Not really. In a book or a slide you have an unavoidable constraint on how much vertical space you can take up. On a screen, you are unavoidably

Re: Generating Strings with Random Contents

2014-07-16 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Alternative: randomSample(lowercase, 10, lowercase.length).writeln; No, I don't think that's appropriate, because it will pick 10 individual characters from a, b, c, ... , z (i.e. no character will appear more than once), and the characters picked will appear in alphabetical order.

Building SDC from source

2014-07-27 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hi all, I'm running into a little trouble trying to build SDC. The first problem was that the makefile does not auto-detect the appropriate llvm-config, or the libphobos2 location, but that's simply enough fixed by doing (in my case): make LLVM_CONFIG=llvm-config-3.4

Re: Building SDC from source

2014-07-27 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 27/07/14 14:22, Stefan Koch via Digitalmars-d-learn wrote: your LD_PATH seems to not have the lib in it From the Makefile, I'd understood that LD_PATH was meant to point to the _directory_ where the libraries are contained, not the actual library itself ... ? After all, it's just mapped

Re: Building SDC from source

2014-07-27 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 27/07/14 14:16, Stefan Koch via Digitalmars-d-learn wrote: sdc itself should not use phobos at all as far as I can tell. libsdrt should be selfcontaint. Yes, it's obviously being used to build the compiler, and supplying the flag directly is clearly only necessary in this case for the gcc

Re: Building SDC from source

2014-07-27 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 27/07/14 15:10, Dicebot via Digitalmars-d-learn wrote: Is shared Phobos library in /opt/dmd known do ldconfig? No, but isn't that what the -L flag should be passing to gcc?

Re: Building SDC from source

2014-07-27 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 27/07/14 16:20, Stefan Koch via Digitalmars-d-learn wrote: if gcc knows where the lib is it can compile agianst it. But the library beeing _shared_ will not be linked with the executable but the library will be loaded form the path's supplied as LD_PATH or in ldconfig. The -L flag does not

Re: Appender is ... slow

2014-08-14 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 14/08/14 19:16, Philippe Sigaud via Digitalmars-d-learn wrote: Do people here get good results from Appender? And if yes, how are you using it? An example where it worked for me: http://braingam.es/2013/09/betweenness-centrality-in-dgraph/ (You will have to scroll down a bit to get to the

Re: Appender is ... slow

2014-08-14 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 14/08/14 23:33, Joseph Rushton Wakeling via Digitalmars-d-learn wrote: An example where it worked for me: http://braingam.es/2013/09/betweenness-centrality-in-dgraph/ I should add that I don't think I ever explored the case of just using a regular array with assumeSafeAppend. Now

Re: Problem interfacing with GSL

2014-11-30 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 30/11/14 13:21, Arjan via Digitalmars-d-learn wrote: Hi! D noob here. I'm trying to call this function from the GSL lib: Out of curiosity (since your question has already been answered), what functionality is it that is making you want to use GSL? I ask because I want to be sure we're

Inheritance and in-contracts

2014-12-05 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Suppose I have a base class where one of the methods has an in-contract, and a derived class that overrides it: / import std.stdio; abstract class Base { abstract void foo(int n) in { assert(n 5); } body {

Re: Inheritance and in-contracts

2014-12-05 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 05/12/14 23:45, Ali Çehreli via Digitalmars-d-learn wrote: This is a known problem with contract inheritance. The following bug report mentions the ugly hack of defining assert(0) as the derived's 'in' contract: https://issues.dlang.org/show_bug.cgi?id=6856 Thanks for the clarification.

Re: Inheritance and in-contracts

2014-12-05 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 06/12/14 00:24, bearophile via Digitalmars-d-learn wrote: Is this a strong need? Let's put it this way: I don't mind copy-pasting the same in-contract into derived class methods. I'd just rather avoid it, and was hoping there was a way to do so which was trivial. It's disappointing

std.algorithm.map with side-effects

2014-12-05 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Here's a little experiment I was trying out earlier today in order to try and convert foreach-style code to using UFCS of ranges: // import std.algorithm, std.range, std.stdio; void main() { size_t s = 0; void essify(size_t n) {

Re: std.algorithm.map with side-effects

2014-12-05 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 06/12/14 00:58, bearophile via Digitalmars-d-learn wrote: Joseph Rushton Wakeling: Can anyone advise why, map is lazy, like most other ranges. Ah, I see. That function would only be called on consumption of the results of the map. Lazy higher order functions like map/filter should

Re: @property usage

2014-12-10 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 09/12/14 08:31, Nicholas Londey via Digitalmars-d-learn wrote: Does @property ever make sense for a free floating function? http://dlang.org/phobos/std_random.html#.rndGen :-)

Re: Inheritance and in-contracts

2014-12-22 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 22/12/14 19:06, aldanor via Digitalmars-d-learn wrote: https://github.com/D-Programming-Language/dmd/pull/4200 Yes, I saw that PR with some joy -- thanks for the link! :-)

Re: Inheritance and in-contracts

2014-12-22 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 22/12/14 20:12, aldanor via Digitalmars-d-learn wrote: On Monday, 22 December 2014 at 19:11:13 UTC, Ali Çehreli wrote: On 12/22/2014 10:06 AM, aldanor wrote: https://github.com/D-Programming-Language/dmd/pull/4200 Thank you! This fixes a big problem with the contracts in D. Ali It's

opDollar and length

2014-12-28 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
A question that suddenly occurred to me, and I realized I didn't know the answer. Why is it necessary/desirable to define separate .length and .opDollar methods for custom types?

Re: opDollar and length

2014-12-28 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 28/12/14 19:21, Tobias Pankrath via Digitalmars-d-learn wrote: To allow slicing for types that don't have a length property but are terminated by a sentinel value, like null terminated strings or single linked lists. It's usefull for multi-dimensional containers as well. Ah, clear. Thanks

Re: idiomatic D: what to use instead of pointers in constructing a tree data structure?

2015-01-08 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 07/01/15 16:02, Laeeth Isharc via Digitalmars-d-learn wrote: class node { string name; node ref; } Small recommendation (apart from the reserved word issue which you fixed): it's generally considered good D style to give structs and classes names that start with capital letters,

Re: partialShuffle only shuffles subset.

2015-05-20 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Tuesday, 19 May 2015 at 14:31:21 UTC, Ivan Kazmenko wrote: On Tuesday, 19 May 2015 at 10:00:33 UTC, BlackEdder wrote: The documentation seems to indicate that partialShuffle: Partially shuffles the elements of r such that upon returning r[0..n] is a random subset of r, (which is what I

Re: Struct that destroys its original handle on copy-by-value

2015-07-29 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Sunday, 26 July 2015 at 11:30:16 UTC, Joseph Rushton Wakeling wrote: Hello all, A design question that came up during the hackathon held during the last Berlin D Meetup. [...] Ping on the above -- nobody has any insight...?

Re: Struct that destroys its original handle on copy-by-value

2015-08-01 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 31/07/15 19:21, Ali Çehreli via Digitalmars-d-learn wrote: On 07/26/2015 04:29 AM, Joseph Rushton Wakeling via Digitalmars-d-learn wrote: is this design idea even feasible in principle, or just a bad idea from the get-go? As I understand it, it is against one of fundamental D principles

Re: Struct that destroys its original handle on copy-by-value

2015-08-01 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 31/07/15 13:40, Kagamin via Digitalmars-d-learn wrote: On Sunday, 26 July 2015 at 12:16:30 UTC, Joseph Rushton Wakeling wrote: Example: Unique!Random rng = new Random(unpredictableSeed); rng.take(10).writeln; My aim by contrast is to _allow_ that kind of use, but render the original

Re: Struct that destroys its original handle on copy-by-value

2015-08-02 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 02/08/15 03:38, Dicebot via Digitalmars-d-learn wrote: On Saturday, 1 August 2015 at 17:50:28 UTC, John Colvin wrote: I'm not sure how good an idea it is to totally enforce a range to be non-copyable, even if you could deal with the function call chain problem. Even in totally save-aware

Re: Struct that destroys its original handle on copy-by-value

2015-08-03 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Monday, 3 August 2015 at 09:01:51 UTC, Dicebot wrote: It is now verified as safe by `return ref`. Yes, until you pointed this out to me I'd been convinced that classes were the way forward for RNGs. I think that `return ref` is going to be a _very_ powerful tool for facilitating

Re: Why hide a trusted function as safe?

2015-07-26 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 26/07/15 14:24, Adam D. Ruppe via Digitalmars-d-learn wrote: If the whole function is marked @trusted, the compiler doesn't try to check it at all - it just takes your word for it. There was a bit of argument about this a while ago in bugzilla, not everyone agrees it is a good idea. I don't

Struct that destroys its original handle on copy-by-value

2015-07-26 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello all, A design question that came up during the hackathon held during the last Berlin D Meetup. I was trying to come up with a range that can be copied by value, but when this is done, destroys the original handle. The idea would be behaviour something like this: auto

Re: Struct that destroys its original handle on copy-by-value

2015-07-26 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 26/07/15 13:45, Martijn Pot via Digitalmars-d-learn wrote: Sounds like unique_ptr (so UniqueRange might be a nice name). Maybe you can get some ideas from that. There is already a Unique in std.typecons. However, I'm not sure that it's doing what I require. Example: Unique!Random

Re: [sdc] linker problems when building programs with sdc

2015-10-22 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
... or, it turns out, sdc doesn't like it when you forget to rewrite `void main()` as `int main()`, and its error messages are still in the cryptic stage :-P Onwards and upwards, then ... :-) On 18/10/15 19:58, Joseph Rushton Wakeling via Digitalmars-d-learn wrote: Turns out even `return 42

[sdc] linker problems when building programs with sdc

2015-10-18 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello all, I recently decided to have another play with sdc to see how it's doing. Since my dmd is installed in /opt/dmd/ I had to do a couple of tricks to get sdc itself to build: (i) put a dlang.conf in /etc/ld.so.conf.d/ containing the /opt/dmd/lib64 path; (ii) call 'make

Re: [sdc] linker problems when building programs with sdc

2015-10-18 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On 18/10/15 19:43, Marco Leise via Digitalmars-d-learn wrote: Maybe you should have started with `return 42;`? :D writeln is not a light-weight in terms of exercised compiler features. I didn't even know that it compiles yet. Last time I heard it was not usable. Hahahahahahahaha :-D Turns out

Creating D bindings for a C library

2015-11-24 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello all, I'm considering creating some D bindings for a C library. Before I start, I was wondering if anyone could advise me on the current state-of-the-art in automatically converting C headers to .d or .di files; it's a long time since I've looked at anything to do with this and the

Re: Creating D bindings for a C library

2015-11-24 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Tuesday, 24 November 2015 at 23:14:14 UTC, Joseph Rushton Wakeling wrote: I'm considering creating some D bindings for a C library. I should probably clarify that I know what to do assuming I have to write all the bindings manually. However, as the library has quite a lot of header

Re: Creating D bindings for a C library

2015-11-25 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Tuesday, 24 November 2015 at 23:49:26 UTC, cym13 wrote: There are some binding generator the most two famous being htod and dstep: http://wiki.dlang.org/List_of_Bindings#Binding_generators Is htod maintained any more? I had the impression it had kind of fallen by the wayside. I'll give

Re: Creating D bindings for a C library

2015-11-25 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Wednesday, 25 November 2015 at 17:45:48 UTC, ponce wrote: If doing it by hand, some tips here: http://p0nce.github.io/d-idioms/#Porting-from-C-gotchas Cool, thanks. The stuff about using c_long and c_ulong is particularly useful/relevant to my use-case, so it's good to be reminded of

dstep problem: "fatal error: 'limits.h' file not found"

2015-11-25 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
I've just built and installed dstep (on Ubuntu 15.10, using libclang-3.7) but whenever I try to run it on a header file, I run into the error message: File(8AC8E0, "")/usr/include/limits.h:123:16: fatal error: 'limits.h' file not found I suspect this is a libclang problem, but does anyone

Re: dstep problem: "fatal error: 'limits.h' file not found"

2015-11-26 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Thursday, 26 November 2015 at 07:28:37 UTC, Jacob Carlborg wrote: Hmm, I was pretty sure I fixed this, but perhaps not for that file. Please report an issue. In the meantime there's a workaround in the documentation [1], second paragraph, perhaps not very clear though. [1]

Re: Why is Linux the only OS in version identifier list that has a lowercase name?

2016-04-12 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Tuesday, 12 April 2016 at 01:32:02 UTC, Brian Schott wrote: On Monday, 11 April 2016 at 23:01:08 UTC, marcpmichel wrote: Is it because Linux is not an OS ? :p I gnu somebody would bring that up. There's actually a serious point here, though -- as D is ported to other platforms and

Re: Why is Linux the only OS in version identifier list that has a lowercase name?

2016-04-12 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Tuesday, 12 April 2016 at 18:23:25 UTC, Jonathan M Davis wrote: Well, work has been done to make it so that different runtimes will work - e.g. there's a CRuntime_Glibc and a CRuntime_Bionic. That's pretty cool. Was that a result of the recent Android porting work, or was it a

Extensible struct type via variadic template arguments

2016-04-10 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello all, I've been playing around recently with some new ideas for a reworking of my Dgraph library: https://github.com/WebDrake/Dgraph ... and particularly, considering how to use D's metaprogramming techniques to best allow the fundamental graph data structures to be extended

Re: Extensible struct type via variadic template arguments

2016-04-11 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Monday, 11 April 2016 at 22:06:00 UTC, ag0aep6g wrote: mixin template multipleEdgeProperties (EdgePropertyList...) { static if (EdgePropertyList.length >= 1) { mixin singleEdgeProperty!(EdgePropertyList[0]); mixin multipleEdgeProperties!(EdgePropertyList[1 .. $]);

`return ref`, DIP25, and struct/class lifetimes

2016-05-16 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello all, Consider a struct that wraps a pointer to some other piece of data as follows: struct MyWrapper(T) { private T* data; public this(ref T input) { this.data = } ... other methods that use `this.data` ... } Is there

Re: Request assistance converting C's #ifndef to D

2016-05-16 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Thursday, 12 May 2016 at 22:51:17 UTC, Andrew Edwards wrote: The following preprocessor directives are frequently encountered in C code, providing a default constant value where the user of the code has not specified one: #ifndef MIN #define MIN 99 #endif

Re: `return ref`, DIP25, and struct/class lifetimes

2016-05-16 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Monday, 16 May 2016 at 15:33:09 UTC, Dicebot wrote: tl; dr: DIP25 is so heavily under-implemented in its current shape it can be considered 100% broken and experimenting will uncover even more glaring holes. Well, it's always fun to find the holes in things ... :-) To be more precise,

Re: Specifying content-type for a POST request using std.net.curl

2016-08-09 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Tuesday, 9 August 2016 at 14:30:21 UTC, Seb wrote: There is also https://github.com/ikod/dlang-requests Which I find in general more intuitive to use ;-) Interesting, I'd not come across that before. Thanks -- I'll give it a glance some time ...

Specifying content-type for a POST request using std.net.curl

2016-08-09 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello all, I'm currently writing a little client app whose job is to make a POST request to a vibe.d webserver and output the response. However, vibe.d is picky about the content-type of the request body, and so far as I can see there is no way to specify this via the `std.net.curl.post`

Re: Specifying content-type for a POST request using std.net.curl

2016-08-09 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Tuesday, 9 August 2016 at 14:21:09 UTC, ketmar wrote: http://dpldocs.info/experimental-docs/std.net.curl.HTTP.setPostData.html https://dlang.org/phobos/std_net_curl.html#.HTTP.setPostData reading documentation rox! Yea, mea culpa. I had actually glanced at that but was asking on the

Re: How to enforce compile time evaluation (and test if it was done at compile time)

2017-02-28 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Tuesday, 28 February 2017 at 00:22:28 UTC, sarn wrote: If you ever have doubts, you can always use something like this to check: assert (__ctfe); Sorry, "enforce" would more appropriate if you're really checking. if (!__ctfe) assert(false); ... might be the best option. That

Re: std.net.curl and libcurl.so

2016-09-24 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Friday, 23 September 2016 at 00:55:43 UTC, Stefan Koch wrote: This suggests that libcurl is loaded. could you compile with -g ? and then post the output ? Thanks Stefan! It was compiled with -g, but I was missing the libcurl3-dbg package. Here's the results: #0 0x0046b048 in

Re: std.net.curl and libcurl.so

2016-09-24 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Saturday, 24 September 2016 at 19:11:52 UTC, Joseph Rushton Wakeling wrote: On Friday, 23 September 2016 at 00:55:43 UTC, Stefan Koch wrote: This suggests that libcurl is loaded. could you compile with -g ? and then post the output ? Further to earlier remarks: I now think this may be a

Re: std.net.curl and libcurl.so

2016-09-24 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Saturday, 24 September 2016 at 19:42:11 UTC, Joseph Rushton Wakeling wrote: On Saturday, 24 September 2016 at 19:27:31 UTC, Joseph Rushton Wakeling wrote: Further to earlier remarks: I now think this may be a general problem of LDC 1.0.0 and not a problem of the snap package. I tried

Re: std.net.curl and libcurl.so

2016-09-24 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Saturday, 24 September 2016 at 19:27:31 UTC, Joseph Rushton Wakeling wrote: Further to earlier remarks: I now think this may be a general problem of LDC 1.0.0 and not a problem of the snap package. I tried building my simple curl-using program using an LDC 1.0.0 build and installed from

std.net.curl and libcurl.so

2016-09-22 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello all, As some have you may have followed, I've been working on snap-packaging LDC. However, I've run into an issue when it comes to programs that use std.net.curl. Here's a simple example: void main () { import std.net.curl : get; auto website =

Re: CTFE difference between dmd and ldc2

2017-01-07 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Thursday, 29 December 2016 at 09:57:25 UTC, Joseph Rushton Wakeling wrote: On Thursday, 29 December 2016 at 09:24:23 UTC, Joseph Rushton Wakeling wrote: Sorry for delay in following up on this. Yes, the same problem occurs with dmd 2.071 (as installed from the deb package downloaded from

Re: CTFE difference between dmd and ldc2

2016-12-29 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Tuesday, 27 December 2016 at 22:34:50 UTC, Johan Engelen wrote: On Tuesday, 27 December 2016 at 17:56:07 UTC, Stefan Koch wrote: I doubt that this is a CTFE bug since there should be little difference in the ctfe code between ldc and dmd. That said, it is of course a possibility. Do you

Re: CTFE difference between dmd and ldc2

2016-12-29 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Thursday, 29 December 2016 at 09:24:23 UTC, Joseph Rushton Wakeling wrote: On Tuesday, 27 December 2016 at 22:34:50 UTC, Johan Engelen wrote: Do you see the same with dmd 2.071? (that's the same front-end code as the LDC version tested) Sorry for delay in following up on this. Yes, the

Re: CTFE difference between dmd and ldc2

2017-01-08 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Saturday, 7 January 2017 at 22:55:55 UTC, Joseph Rushton Wakeling wrote: I should probably also create a formal issue for this. Any thoughts on how best to break it down into a minimal example? It does not appear easy to do so at first glance :-\ Turned out to be easier than I

CTFE difference between dmd and ldc2

2016-12-27 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello all, I've recently been working on a port of the mir.random Mersenne Twister implementation to Phobos, and I've run into a bit of weirdness with CTFE. Specifically, I use some CTFE functionality to generate a default starting state for the generator:

Re: CTFE difference between dmd and ldc2

2016-12-27 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Tuesday, 27 December 2016 at 17:56:07 UTC, Stefan Koch wrote: I doubt that this is a CTFE bug since there should be little difference in the ctfe code between ldc and dmd. That said, it is of course a possibility. I'll have a look. Thanks! It's very weird how, of the values in the

Re: -fPIC and 32-bit dmd.conf settings

2017-04-09 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Sunday, 9 April 2017 at 07:12:51 UTC, Patrick Schluter wrote: 32 bit modes support for PIC is painful because the RIP relative addressing mode does not exist. AMD introduced it when they added 64 bit support in the Opteron processors. In 32 bit mode it was possible to generate PIC code but

-fPIC and 32-bit dmd.conf settings

2017-04-08 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello folks, The default dmd.conf settings for 64-bit environments include the -fPIC flag (for good reason), but the settings for 32-bit environments do not. Any particular reason for this? Thanks & best wishes, -- Joe

Re: First time user of LDC and getting newbie problems.

2017-06-13 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Tuesday, 13 June 2017 at 12:38:03 UTC, Joseph Rushton Wakeling wrote: On Sunday, 11 June 2017 at 21:58:27 UTC, WhatMeForget wrote: Just trying to compile a "Hello World" using dub and ldc2. I presume from your command line you're running Windows? ... I don't know where I got that idea

Re: First time user of LDC and getting newbie problems.

2017-06-13 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Sunday, 11 June 2017 at 21:58:27 UTC, WhatMeForget wrote: Just trying to compile a "Hello World" using dub and ldc2. Let's start from the beginning: how did you install LDC? I presume from your command line you're running Windows?

Re: First time user of LDC and getting newbie problems.

2017-06-13 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Tuesday, 13 June 2017 at 20:04:46 UTC, WhatMeWorry wrote: Sorry I didn't reply sooner. I just reinstalled everything and it's all good. Something was really screwed up. "Screwed up" is also a fairly good way to describe my responses too, since I also missed your clear statement that you

Using output-range overloads of SysTime.toISO{Ext}String with formatting code

2019-07-07 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello folks, Is there an idiomatic/intended way to use the output-range taking overloads of SysTime.toISOString and toISOExtString with stuff like `writeln` and `format`, as opposed to explicitly generating an output range to stdout or a string, and passing that to these methods? I'm a bit

Re: Using output-range overloads of SysTime.toISO{Ext}String with formatting code

2019-07-08 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Sunday, 7 July 2019 at 20:12:30 UTC, drug wrote: 07.07.2019 17:49, Joseph Rushton Wakeling пишет: it's possible to do something like `writefln!"%s"(now.toISOExtString)` and have it automatically use the output range overload rather than allocating a new string instance. This is exactly

Why must a bidirectional range also be a forward range?

2019-09-19 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello folks, A question that occurred to me while implementing a new data structure recently, which I'm not sure I've ever seen a reason for. Why must bidirectional ranges also be forward ranges (as opposed to just input ranges)? It doesn't seem to me that the `save` property is

Re: Using output-range overloads of SysTime.toISO{Ext}String with formatting code

2019-07-09 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Tuesday, 9 July 2019 at 08:51:59 UTC, Mitacha wrote: I've managed to make it work using 'alias this' and wrapper struct. https://run.dlang.io/is/3SMEFZ It's not an elegant solution, there could be a better way to do this. Yea, a wrapper struct with custom `toString` seems the most

Re: Using output-range overloads of SysTime.toISO{Ext}String with formatting code

2019-07-09 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Monday, 8 July 2019 at 12:53:18 UTC, Digital Mars wrote: I guess that there is no way to have `writeln` automatically use the output range overload instead of allocating one. You need somehow to provide the output range to `toISOExtString` explicitly because `writeln` outputs the return of

Thin UTF8 string wrapper

2019-12-06 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello folks, I have a use-case that involves wanting to create a thin struct wrapper of underlying string data (the idea is to have a type that guarantees that the string has certain desirable properties). The string is required to be valid UTF-8. The question is what the most useful API

Re: Thin UTF8 string wrapper

2019-12-07 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Saturday, 7 December 2019 at 15:57:14 UTC, Jonathan M Davis wrote: There may have been some tweaks to std.encoding here and there, but for the most part, it's pretty ancient. Looking at the history, it's Seb who marked some if it as being a replacement for std.utf, which is just plain

Re: Thin UTF8 string wrapper

2019-12-07 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Saturday, 7 December 2019 at 03:23:00 UTC, Jonathan M Davis wrote: The module to look at here is std.utf, not std.encoding. Hmmm, docs may need updating then -- several functions in `std.encoding` explicitly state they are replacements for `std.utf`. Did you mean `std.uni`? It is

Re: Why must a bidirectional range also be a forward range?

2019-09-20 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
On Thursday, 19 September 2019 at 22:55:55 UTC, Jonathan M Davis wrote: For better or worse, ranges were more or less set up as a linear hierarchy, and it's unlikely that use cases for bidirectional ranges which aren't forward ranges are common. I expect that it's a bit like infinite,

Detecting unneeded imports in CI

2020-02-06 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello folks, Are there any well-established CI patterns/tools for detecting unneeded imports in D code? Ideally including detecting unused symbols from selective imports? Thanks and best wishes, -- Joe

Fetching licensing info for all dependencies of a DUB project

2020-05-12 Thread Joseph Rushton Wakeling via Digitalmars-d-learn
Hello folks, Are there any tools that exist to help prepare a report of all the different software licenses used by dependencies of a DUB project? (This should cover all pulled in dependencies, not just direct dependencies.) Thanks and best wishes, -- Joe

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