On 2012-04-17 20:47, H. S. Teoh wrote:
You can just edit /etc/dmd.conf to that effect (if it conflicts with
your stable version of dmd, you could try to change the git dmd source
to look for dmd.conf in a different place, say /usr/src/d-devel/dmd.conf
or something, and so you can completely
On Tuesday, 17 April 2012 at 23:56:12 UTC, bearophile wrote:
Namespace:
Another idea: instead scope, in can get a new functionality.
Instead as a synonym for const it could mean not null for
objects.
Note that currently in D2 in means scope const.
Bye,
bearophile
Yes I know. But the
On Wednesday, 18 April 2012 at 04:55:23 UTC, Ali Çehreli wrote:
On 04/17/2012 02:00 PM, simendsjo wrote:
Sounds like a bug. C style initializers work in other cases:
I try not to use them. I think they have this 'feature' of
leaving unspecified members uninitialized:
struct S
{
int i;
Le 17/04/2012 16:07, Ali Çehreli a écrit :
On 04/17/2012 12:42 AM, Somedude wrote:
Sorry for hijacking this thread, but since you're around, I hope you'll
see this message. As a D beginner, I'm browsing through your book.
I wanted to tell you that there is something essential missing in it:
On 2012-04-17 20:10, Joseph Rushton Wakeling wrote:
Hello all,
As per earlier discussion I'm trying to hack on Phobos to update the
random sampling code.
To do this I've just copied random.d into a new file, randomsample.d,
which I'm modifying and messing around with; I'm trying to build
Le 18/04/2012 10:26, Somedude a écrit :
Yes, I think that you have a lot of valuable information, but the
organization is lacking. The advanced chapters look good, but the first
beginner chapters can be .
... largely improved.
Le 18/04/2012 12:04, Jacob Carlborg a écrit :
I can't find any easy or friendly get started hacking on Phobos page,
so can anyone advise how to get set up correctly?
I've thought about this several times, we need one badly.
I've just created a page in the Wiki with the posts here:
Le 18/04/2012 12:41, maarten van damme a écrit :
That's a very odd design. Making it work when instantiating a new struct
of that type but not inline. Anyway, test(3,5) works perfect, thank you.
It's not odd at all. You append a structure, not an array.
{3,5} is for array initialization, it's
Namespace:
But i think, i'm probably the only one in D who really wants
something like that.
I have discussed this topic three or more times, and opened an enhancement
request around 2010-08-02:
http://d.puremagic.com/issues/show_bug.cgi?id=4571
Bye,
bearophile
I copied the code below from this site under the std.stdio
library reference section and tried to compile it. I downloaded
D2/Phobos. Compiler says fileread.d(4): Error: undefined
identifier File
If I add import std.stdio to the beginning it get ; expected,
function declaration w/o return
I think there should be a learn.newbie forum. After I post my
little problems of a sample code snippet that won't compile, I
read some of the other threads. There are those c/c++
programmers learning the ins/outs of D and then there are the
greenies like me. Just a thought.
I bought the book and am trying to patiently learn this language.
I follow various tutorials here and around the web that
frequently won't compile. I suspect it has something to do with
D1/D2/Phobos/Tango and not just really poor unvetted tutorials.
It would really be helpful if those
On Wed, 18 Apr 2012 14:19:27 +0200, Paul phshaf...@gmail.com wrote:
I think there should be a learn.newbie forum. After I post my little
problems of a sample code snippet that won't compile, I read some of the
other threads. There are those c/c++ programmers learning the ins/outs
of D
On Wed, 18 Apr 2012 14:09:20 +0200, Paul phshaf...@gmail.com wrote:
I copied the code below from this site under the std.stdio library
reference section and tried to compile it. I downloaded D2/Phobos.
Compiler says fileread.d(4): Error: undefined identifier File
If I add import
Yeah I bought the book recently and ran into an issue very
quickly into it. But this error I keep getting keeps bugging me.
Could really use an explanation on why its not compiling. Here is
the code.
/*
Compute heights in centimeters for a range of heights
expressed in feet and inches
*/
On Wed, 18 Apr 2012 09:10:46 -0400, Mark sectio...@yahoo.com wrote:
Yeah I bought the book recently and ran into an issue very quickly into
it. But this error I keep getting keeps bugging me. Could really use an
explanation on why its not compiling. Here is the code.
/*
Compute heights
On Wed, 18 Apr 2012 15:10:46 +0200, Mark sectio...@yahoo.com wrote:
Yeah I bought the book recently and ran into an issue very quickly into
it. But this error I keep getting keeps bugging me. Could really use an
explanation on why its not compiling. Here is the code.
/*
Compute heights
On Wed, 18 Apr 2012 15:24:12 +0200, Mark sectio...@yahoo.com wrote:
Are you using the D1 compiler..? It works on dmd 2.057,8 and 9 at least.
Just write dmd, and look at the top for the compiler version.
look at that. it says D1. I downloaded both D1 and D2. Better get rid of
D1 then. I
Are you using the D1 compiler..? It works on dmd 2.057,8 and 9
at least.
Just write dmd, and look at the top for the compiler version.
look at that. it says D1. I downloaded both D1 and D2. Better get
rid of D1 then. I feel like such an idiot. THank you for the help.
On Wednesday, 18 April 2012 at 05:45:06 UTC, Jakob Ovrum wrote:
On Tuesday, 17 April 2012 at 15:36:39 UTC, Ali Çehreli wrote:
The reason is, a sequence of UTF-8 code units are not a valid
UTF-8 when reversed (or retro'ed :p). But a dchar array can be
reversed.
Ali
It is absolutely
On 04/18/2012 12:16 AM, Kenji Hara wrote:
On Wednesday, 18 April 2012 at 04:55:23 UTC, Ali Çehreli wrote:
assert(s.d == double.nan); // -- fails (may work for you)
You should use std.math.isNaN whether a floating point value is NaN.
assert(isNaN(s.d)); // -- success
That a thousandth
On Wednesday, 18 April 2012 at 11:36:30 UTC, bearophile wrote:
Namespace:
But i think, i'm probably the only one in D who really wants
something like that.
I have discussed this topic three or more times, and opened an
enhancement request around 2010-08-02:
I feel like such an idiot.
don't worry. you're not the first and not the last being confused by this.
On 04/18/2012 03:06 AM, Somedude wrote:
Le 18/04/2012 10:26, Somedude a écrit :
Yes, I think that you have a lot of valuable information, but the
organization is lacking. The advanced chapters look good, but the first
beginner chapters can be .
... largely improved.
Thank you, this is all
Le 18/04/2012 14:19, Paul a écrit :
I think there should be a learn.newbie forum. After I post my little
problems of a sample code snippet that won't compile, I read some of the
other threads. There are those c/c++ programmers learning the ins/outs
of D and then there are the greenies like
Le 18/04/2012 14:34, Paul a écrit :
I bought the book and am trying to patiently learn this language. I
follow various tutorials here and around the web that frequently won't
compile. I suspect it has something to do with D1/D2/Phobos/Tango and
not just really poor unvetted tutorials. It
I'm using the language reference on dlang.org (which is awesome),
anyways, I can't find a description of .empty in the array
section. Should it be there? I don't see it in the property
section either.
Could someone more expert than me, add it in somewhere? Thanks.
Also, is there any
On Wednesday, 18 April 2012 at 14:35:07 UTC, dcoder wrote:
I'm using the language reference on dlang.org (which is
awesome), anyways, I can't find a description of .empty in the
array section. Should it be there? I don't see it in the
property section either.
Could someone more expert than
On Friday, 13 April 2012 at 14:28:05 UTC, Jacob Carlborg wrote:
On 2012-04-13 15:34, Rizo Isrof wrote:
Hi,
I am planning to use D for creating native applications on Mac
OS X. For
that, of course, D must interact with the Cocoa API. I have no
knowledge
of how this bindings could be done.
On Tuesday, 17 April 2012 at 18:39:16 UTC, Xan wrote:
On Tuesday, 17 April 2012 at 18:25:21 UTC, Ali Çehreli wrote:
On 04/17/2012 11:13 AM, Xan wrote:
The idea is behind this https://gist.github.com/2407923
But I receive:
$ gdmd-4.6 algorisme_code.d
algorisme_code.d:22: Error: variable
dcoder:
Also, is there any surprises / difference between the two:
if( !arr.length)
and
if( arr.empty)
do they produce the same thing all the time?
thanks.
No surprises here, thankfully. Its implementation:
https://raw.github.com/D-Programming-Language/phobos/master/std/array.d
On Wed, Apr 18, 2012 at 04:15:12PM +0200, Somedude wrote:
Le 18/04/2012 14:34, Paul a écrit :
I bought the book and am trying to patiently learn this language. I
follow various tutorials here and around the web that frequently
won't compile. I suspect it has something to do with
Le 18/04/2012 05:15, Joseph Rushton Wakeling a écrit :
On 13/04/12 10:04, Dmitry Olshansky wrote:
OK, I'll see what I can do. I'd like to discuss and refine the design a
bit further before making any pull request -- should I take things over
to the Phobos mailing list for this ... ?
I'm no
On Tuesday, 17 April 2012 at 12:11:21 UTC, David wrote:
In this case, I had to type:
rdmd -unittest --main test.d
Without the --main, I would get linker errors, and couldn't
find the
reason for these errors. Happily, someone here explained me
that the
effect of the --main flag was to insert a
Why does collectExceptionMsg return a special 'emptyExceptionMsg'
string if the exception caught has no message?
string collectExceptionMsg(T = Exception, E)(lazy E expression)
{
try
{
expression();
return cast(string)null;
}
catch(T e)
return e.msg.empty
On 18/04/12 17:03, Somedude wrote:
This looks very C++ ish.
Yea, it's a rewrite of code originally in C (not even ++ ... !).
I can't comment very much, being myself quite noob, but I think you can
do this, for style as well as performance:
- add pure nothrow everywhere you can.
I think
When I'm trying to create GLUT Window via DMD 2.059 compilation
of my code, I'm getting an error:
freeglut ERROR: Internal error FBConfig with necessary
capabilities not found in function fgOpenWindow
X Error of failed request: BadWindow (invalid Window parameter)
Major opcode of failed
On 2012-04-18 16:39, Rizo Isrof wrote:
Thank you for such a detailed overview of the existing approaches - it
helped me a lot to understand the theory. As you suggested, I will
probably use a modified version of the compiler for tests. But in order
to fully understand the implementation details
On 2012-04-18 16:15, Somedude wrote:
Hi !
It's simple: use D2, and forget about Tango.
What's wrong with Tango? It works with D2 and you can have it side by
side with Phobos. The XML library in Tango is superior to the one in Phobos.
--
/Jacob Carlborg
Ali:
That a thousandth time I have made that mistake and still have not
learned. :( Yes, .nan may not be compared with any other value,
including .nan.
Today I'll present an enhancement request to remove this problem from D.
Hugs,
bearophile
On 18.04.2012 19:03, Somedude wrote:
[snip]
Tweaked version, an revision of RandomSample from std.random, is
available from
https://github.com/WebDrake/RandomSample
Feedback on code details and on tests would be very welcome. It seems
about 10% slower than the original code I wrote, which I
On Tuesday, 17 April 2012 at 00:04:16 UTC, Michaël Larouche
wrote:
My template works with a struct but when I try to mixin my
template in a class, I get compile error because
T.tupleof.length returns 0.
Here's the whole code:
http://ideone.com/UR6YU
For what it's worth, dmd 2.059 (it seems
On Wednesday, 18 April 2012 at 16:36:39 UTC, bearophile wrote:
Ali:
That a thousandth time I have made that mistake and still have
not learned. :( Yes, .nan may not be compared with any other
value, including .nan.
Today I'll present an enhancement request to remove this
problem from D.
On Wednesday, April 18, 2012 18:58:42 Namespace wrote:
override bool opEquals(Object o) const {
if (o is null) {
return false;
}
writeln(o); // write: cast.Vector2D!(float).Vector2D
Vector2D!(T) vec = cast(Vector2D!(T)) o;
writeln(vec); // write: null
// ...
It seems the cast
On Wednesday, April 18, 2012 19:04:12 SomeDude wrote:
On Wednesday, 18 April 2012 at 16:36:39 UTC, bearophile wrote:
Ali:
That a thousandth time I have made that mistake and still have
not learned. :( Yes, .nan may not be compared with any other
value, including .nan.
Today I'll
On Wednesday, April 18, 2012 17:49:55 Andrej Mitrovic wrote:
Why does collectExceptionMsg return a special 'emptyExceptionMsg'
string if the exception caught has no message?
string collectExceptionMsg(T = Exception, E)(lazy E expression)
{
try
{
expression();
return cast(string)null;
On 18/04/2012 13:34, Paul wrote:
I bought the book and am trying to patiently learn this language. I follow
various
tutorials here and around the web that frequently won't compile. I suspect it
has
something to do with D1/D2/Phobos/Tango and not just really poor unvetted
tutorials. It
would
On Wednesday, April 18, 2012 19:15:21 Namespace wrote:
one another, you're going to need to overload opCast.
- Jonathan M Davis
Thanks for your answer.
I have tried to overload opCast in this way:
U opCast(U)() const {
return U(this.x, this.y);
}
But then i get this compiler error
On 4/18/12, Jonathan M Davis jmdavisp...@gmx.com wrote:
Probably to avoid any issues of null vs empty
But what I'm saying is an empty string isn't null.
It also makes it very clear
that you got an empty exception message when printing the message, whereas
there won't be any difference
I take your first example and the relevant class part looks now
like this:
class Vector2D(T) {
public:
T x;
T y;
this() { }
/**
*
*/
static Vector2D!(T) opCall(U, V)(U x, V y) {
Vector2D!(T) vec = new Vector2D!(T)();
Sorry, U v = new U(this.x, this.y); means U v = U(this.x,
this.y);
I tested it with static opCall and also with a normal constructor
this(T x, T y)
On Wednesday, April 18, 2012 19:32:44 Andrej Mitrovic wrote:
On 4/18/12, Jonathan M Davis jmdavisp...@gmx.com wrote:
Probably to avoid any issues of null vs empty
But what I'm saying is an empty string isn't null.
True. But by avoiding the empty string, the entire issue of null == is
On 18/04/12 18:54, Dmitry Olshansky wrote:
I can't comment very much, being myself quite noob, but I think you can
do this, for style as well as performance:
- add pure nothrow everywhere you can.
Yup, unless it's a template as its properties are deduced anyway.
I really don't see anywhere I
1. opCast doesn't do an implict cast. You'll have to cast to
get == to work.
2. If you really have a static opCall, then the new isn't
necessary.
3. You need to return from opCast. You're just declaring a
local variable.
4. You need to import std.traits, or using Unqual will cause
the
On 13/04/2012 19:47, Jonathan M Davis wrote:
I'd just like to verify that my understanding of T : T* in this template is
correct:
struct S(T : T*)
snip
it appears that the compiler is instead taking this to mean that the pointer
part of the type should be stripped from the template argument's
On Wednesday, 18 April 2012 at 18:18:44 UTC, Ali Çehreli wrote:
On 04/18/2012 10:13 AM, Jonathan M Davis wrote:
It's by design. An enhancement request is a waste of time.
Comparisons with
NaN _always_ return false regardless of what they're compared
against - even
NaN. It's not going to
I see i must write
if (vs2 == cast(Vector2s)(vf)) {
writeln(equal);
}
That is unacceptable. Is this the only possibility?
I thought that opEquals can cast this intern. It would seem that
D code isn't so brief as i thought and hoped before.
On Wednesday, 18 April 2012 at 19:18:42 UTC, Namespace wrote:
I see i must write
if (vs2 == cast(Vector2s)(vf)) {
writeln(equal);
}
That is unacceptable. Is this the only possibility?
I thought that opEquals can cast this intern. It would seem
that D code isn't so brief as i thought
Hi,
I want to know what is most interesting for me: delegates or
functions. I consulted sources but none say the practical
consequences of such election.
What can I do and what can't I do with functions and delegates?
Please, be didactics, I'm a newbee
Thanks,
Xan.
On Wednesday, 18 April 2012 at 12:42:26 UTC, simendsjo wrote:
On Wed, 18 Apr 2012 14:09:20 +0200, Paul phshaf...@gmail.com
wrote:
I copied the code below from this site under the std.stdio
library reference section and tried to compile it. I
downloaded D2/Phobos. Compiler says
On 4/18/12, Jonathan M Davis jmdavisp...@gmx.com wrote:
that is null == .
Wow, I don't understand this, why is comparison with null allowed with
the equals operator for strings?
import std.stdio;
class Foo { }
void main()
{
Foo foo;
writeln(foo == null); // compile error, as it should
SomeDude: Your outline and especially your emphasis on what a
rank beginner needs to know is very good.
Would you consider writing it up yourself? Not the whole thing,
maybe but the beginner info and the compiler/linker appendices.
You have a commendable prose style.
There are tutorials
On Wednesday, April 18, 2012 13:52:30 Jonathan M Davis wrote:
On Wednesday, April 18, 2012 19:32:44 Andrej Mitrovic wrote:
On 4/18/12, Jonathan M Davis jmdavisp...@gmx.com wrote:
Probably to avoid any issues of null vs empty
But what I'm saying is an empty string isn't null.
True.
On Wednesday, April 18, 2012 20:02:32 Namespace wrote:
1. opCast doesn't do an implict cast. You'll have to cast to
get == to work.
2. If you really have a static opCall, then the new isn't
necessary.
3. You need to return from opCast. You're just declaring a
local variable.
On Wednesday, April 18, 2012 23:52:29 Andrej Mitrovic wrote:
On 4/18/12, Jonathan M Davis jmdavisp...@gmx.com wrote:
that is null == .
Wow, I don't understand this, why is comparison with null allowed with
the equals operator for strings?
import std.stdio;
class Foo { }
void main()
4. Of course i import it, but it is implicit import if i import
std.stdio.
No, it doesn't. If it does, it's an import bug. std.stdio does
not publicly
import std.traits. You need to import it.
- Jonathan M Davis
Believe me, it works fine. So it must be a bug.
For opCast i have now this
On Wednesday, 18 April 2012 at 14:15:08 UTC, Somedude wrote:
Le 18/04/2012 14:34, Paul a écrit :
I bought the book and am trying to patiently learn this
language. I
follow various tutorials here and around the web that
frequently won't
compile. I suspect it has something to do with
On Wednesday, 18 April 2012 at 14:10:17 UTC, Somedude wrote:
Le 18/04/2012 14:19, Paul a écrit :
I think there should be a learn.newbie forum. After I post my
little
problems of a sample code snippet that won't compile, I read
some of the
other threads. There are those c/c++ programmers
On Wednesday, 18 April 2012 at 21:07:08 UTC, Xan wrote:
Hi,
I want to know what is most interesting for me: delegates or
functions. I consulted sources but none say the practical
consequences of such election.
What can I do and what can't I do with functions and delegates?
Please, be
I want to know what is most interesting for me: delegates or functions.
I consulted sources but none say the practical consequences of such
election.
in addition to what john said: regarding _function literals_ the
difference is by using a delegate instead of a function you have access
to the
Too early happy, now it seems opEquals wouldn't be called...
I tried this again:
U opCast(U)() const if (is(Unqual!U == Vector2D!byte) ||
is(Unqual!U == Vector2D!ubyte) ||
is(Unqual!U == Vector2D!short) ||
is(Unqual!U == Vector2D!ushort) ||
On Wednesday, 18 April 2012 at 13:10:47 UTC, Mark wrote:
Yeah I bought the book recently and ran into an issue very
quickly into it. But this error I keep getting keeps bugging
me. Could really use an explanation on why its not compiling.
Here is the code.
Mark I started a thread along
On 04/18/2012 03:50 PM, Mirko Pilger wrote:
I want to know what is most interesting for me: delegates or functions.
I consulted sources but none say the practical consequences of such
election.
in addition to what john said: regarding _function literals_ the
difference is by using a
On Wed, Apr 18, 2012 at 08:50:10PM +0200, SomeDude wrote:
On Wednesday, 18 April 2012 at 18:18:44 UTC, Ali Çehreli wrote:
On 04/18/2012 10:13 AM, Jonathan M Davis wrote:
It's by design. An enhancement request is a waste of time.
Comparisons with NaN _always_ return false regardless of what
On Wed, Apr 18, 2012 at 11:07:07PM +0200, Xan wrote:
Hi,
I want to know what is most interesting for me: delegates or
functions. I consulted sources but none say the practical
consequences of such election.
What can I do and what can't I do with functions and delegates?
Please, be
On Thu, Apr 19, 2012 at 12:34:09AM +0200, Paul wrote:
[...]
As for the example from this site under std.stdio; it should
compile. It's a simple program. This is the mother site.
A member helped me realize that it needs import std.stdio;
// test.d
void main(string args[])
{
auto
On Thu, Apr 19, 2012 at 12:51:21AM +0200, Paul wrote:
On Wednesday, 18 April 2012 at 13:10:47 UTC, Mark wrote:
Yeah I bought the book recently and ran into an issue very quickly
into it. But this error I keep getting keeps bugging me. Could really
use an explanation on why its not compiling.
SomeDude:
It shouldn't be a problem to detect comparisons against
literal .nan values. The compiler can warn with comparison is
always false.
Ali
Now THAT makes sense.
That's what my proposal is going to be, with small refinements
:-) (And it think it's not the first time someone
On Thursday, April 19, 2012 00:49:29 Namespace wrote:
Too early happy, now it seems opEquals wouldn't be called...
I tried this again:
U opCast(U)() const if (is(Unqual!U == Vector2D!byte) ||
is(Unqual!U == Vector2D!ubyte) ||
is(Unqual!U == Vector2D!short) ||
is(Unqual!U ==
On Wednesday, April 18, 2012 11:18:44 Ali Çehreli wrote:
On 04/18/2012 10:13 AM, Jonathan M Davis wrote:
On Wednesday, April 18, 2012 19:04:12 SomeDude wrote:
On Wednesday, 18 April 2012 at 16:36:39 UTC, bearophile wrote:
Ali:
That a thousandth time I have made that mistake and still have
On Wednesday, April 18, 2012 19:43:07 Jonathan M Davis wrote:
If you declare another overload of opCast:
Object opCast(T)() const
if(is(Unqual!T == Object))
{
return this;
}
then it should work.
Actually, this would be better:
T opCast(T)()
if(isImplicitlyConvertible!(typeof(this),
On Wednesday, 18 April 2012 at 16:56:39 UTC, SomeDude wrote:
On Tuesday, 17 April 2012 at 00:04:16 UTC, Michaël Larouche
wrote:
My template works with a struct but when I try to mixin my
template in a class, I get compile error because
T.tupleof.length returns 0.
Here's the whole code:
The following code:
import std.range;
void main()
{
auto i = iota(3);
writeln(i.front, , length: , i.length); i.popFront();
writeln(i.front, , length: , i.length); i.popFront();
writeln(i.front, , length: , i.length); i.popFront();
Brad Anderson:
You can popFront() for as long as you want well passed the
length. Obviously popping off the front of a zero length range
isn't valid but I would have expected a range violation to
occur rather than it to silently continuing the series with a
wrapped around length.
I think
On Thursday, 19 April 2012 at 03:37:00 UTC, bearophile wrote:
Brad Anderson:
You can popFront() for as long as you want well passed the
length. Obviously popping off the front of a zero length range
isn't valid but I would have expected a range violation to
occur rather than it to silently
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