Re: From the D Blog: Crafting Self-Evident Code in D
I think if `class` is a reference type, it should've been
explicit:
```sh
class C {
...
}
auto obj = new C();
void func(ref C obj)
{
...
}
```
I don't mind if it does not compile without the `ref`, but it
should be on the table - WYSIWYG.
Re: Destroy All Memory Corruption
On Thursday, 22 April 2021 at 13:08:39 UTC, matheus wrote: On Thursday, 22 April 2021 at 01:31:09 UTC, Ali Çehreli wrote: On 4/19/21 6:12 PM, Walter Bright wrote: I'll be doing a reprise of my DConf 2020 talk on Destroy All Memory Corruption on April 21, 2021 at 7PM PST. https://nwcpp.org/ Except this time it'll be live, not prerecorded. All are welcome! This is happening in half an hour. It requires MS Teams, which requires a MS (or Skype) account. Ali Just a pity that in this day and age with all the methods/ways available to stream a video they use such platform. This restrains people like myself to participate/watch, and I believe much more. Please when doing such thing, have a backup strategy that people can watch on any browser without account or installing anything. Matheus. MS Teams works fine on Linux. And I'm actually not sure you would need an MS account, and even if you needed - it's free, and doesn't require you install any MS products.
Re: Discussion Thread: DIP 1039--Static Arrays with Inferred Length--Community Review Round 1
On Wednesday, 6 January 2021 at 09:24:28 UTC, Mike Parker wrote: The Feedback Thread is here: https://forum.dlang.org/post/qglydztoqxhhcurvb...@forum.dlang.org Why not "int[auto] arr = [1, 2, 3]" ? IMHO auto keyword is less ambiguous than $.
Re: DIP 1030-- Named Arguments--Formal Assessment
On Thursday, 17 September 2020 at 12:58:06 UTC, Mike Parker wrote: DIP 1030, "Named Arguments", has been accepted. I would really want to see tuples ...
Re: Mimicking a shell
On Sunday, 29 December 2019 at 17:03:14 UTC, Jan wrote: Hi, Is there a way to forward all input and output from a shell? This implies that e.g. pressing the left arrow on the keyboard is immediately being forwarded to the shell and that the output from a shell would be *exactly* the same as output from my D program (that would include the prompt and VGA colouring). Kind regards, Jan IMHO, this is kinda what you need: https://github.com/greenduck/shell-tunnel/blob/master/shell-tunnel.c Sorry, this code is in C, but converting it to D would be fairly straight forward.
Re: What is the point of a synchronized lock on a single return statement?
On Monday, 25 November 2019 at 08:22:17 UTC, Andrej Mitrovic
wrote:
From:
https://github.com/dlang/phobos/blob/10b9174ddcadac52f6a1ea532deab3310d3a8c03/std/concurrency.d#L1913-L1916:
-
///
final @property bool isClosed() @safe @nogc pure
{
synchronized (m_lock)
{
return m_closed;
}
}
-
I don't understand the purpose of this lock. The lock will be
released as soon as the function returns, and it returns a copy
of a boolean anyway. Am I missing something here?
I think this code can be rewritten as
---
final @property bool isClosed() @safe @nogc pure
{
bool ret;
synchronized (m_lock)
{
ret = m_closed;
}
return ret;
}
---
Normally, if the memory location of m_closed is aligned, the
assignment to 'ret' should be atomic, however if you cannot make
assumptions about alignment, the access should be protected.
Re: The Future of the GtkDcoding Blog
On Tuesday, 19 November 2019 at 19:37:41 UTC, Ron Tarrant wrote: In 2006, I started a blog on PHP-GTK 2.x that ran for 40 posts before the blog site I was using closed its door. By then, I was caught up in writing Corkboard, the first full-featured application I'd written for my own amusement in nearly 20 years, and so I just let it slip away. I think you should set up a "Donate" page on your site, so that an occasional visitor can say thank you.
Re: A tutorial teaching the basics about multimedia with the arsd library
On Sunday, 30 June 2019 at 23:46:27 UTC, Murilo wrote: Hi everyone, I am writing a tutorial teaching the basics about multimedia programming using the arsd library. This is a library all D programmers should have since it is very useful and easy. In this tutorial I will teach in a fun and easy way how to use it for GUIs, image displays, games, etc... Here is the GitHub link: https://github.com/MuriloMir/arsd_multimedia_tutorial And please join the official facebook Dlang group: https://www.facebook.com/groups/ProgrammingInD/ Very nice, thank you ! As has been pointed out by others, it would be great if code snippets could've been copyable.
Re: gtkDcoding Facelift
On Sunday, 23 June 2019 at 10:55:52 UTC, Ron Tarrant wrote: Stage 1 is now complete. Blog entries are color-associated in an effort to make things more visual. Each topic also has its own avatar. Points to anyone who can figure out why each avatar is associated with its topic. https://gtkdcoding.com/ Great work, thank you !
Re: Started a neat 3D model project of D's mascot in Paint3D
On Tuesday, 4 June 2019 at 12:23:27 UTC, Aurélien Plazzotta wrote: On Tuesday, 4 June 2019 at 01:54:28 UTC, Kaylan Tussey wrote: I hope someone is better in paint3d than I am! https://github.com/KaylanTussey/3DD Very nice and thanks! Perhaps you could add a C++ corpse being trampled by D guy, destroying the "++" letters, then the D hero keeps jumping on the C corpse and erase him as well to demonstrate D is trying to compete with both C++ and C. My two cents anyway :) Don't be cruel !
Re: DConf 2019 Livestream
On Wednesday, 8 May 2019 at 08:00:15 UTC, Andrej Mitrovic wrote: On Wednesday, 8 May 2019 at 07:57:40 UTC, Mike Parker wrote: The venue uses WebEx for livestreaming. All the information is available in this PDF: https://drive.google.com/open?id=1yekllbfOmxHqJNuuWIVeP9vNeROmfp1I "When joining: Please connect using Internet Explorer, not Google Chrome or another web browser." You guys can't be serious, you're using WebEx? Funny as it is, it actually works fine on Ubuntu/Firefox.
Re: Singleton in Action?
On Saturday, 2 February 2019 at 19:23:58 UTC, Ron Tarrant wrote: Thanks for the replies, fellow programmers. (generic, unisex, PC, and all-encompassing) If I could trouble someone for a complete working example so I have something to study, that would be excellent. I think that's what you really need: [1] https://davesdprogramming.wordpress.com/ [2] https://www.youtube.com/watch?v=ZHmIAdlNtiM
Re: Reverse and sort array elements
On Tuesday, 18 December 2018 at 12:07:37 UTC, Andrey wrote:
Hi,
Have array:
enum array = ["qwerty", "a", "baz"];
Need to reverse and sort array elements to get this result:
[a, ytrewq, zab]
Did this:
enum result = array.map!(value => value.retro()).sort();
Got:
Error: template std.algorithm.sorting.sort cannot deduce
function from argument types !()(MapResult!(__lambda1,
string[])), candidates are:
/usr/include/dmd/phobos/std/algorithm/sorting.d(1849,1):
std.algorithm.sorting.sort(alias less = "a < b", SwapStrategy
ss = SwapStrategy.unstable, Range)(Range r) if ((ss ==
SwapStrategy.unstable && (hasSwappableElements!Range ||
hasAssignableElements!Range) || ss != SwapStrategy.unstable &&
hasAssignableElements!Range) && isRandomAccessRange!Range &&
hasSlicing!Range && hasLength!Range)
How to solve the problem?
Did you try this ?
import std.stdio;
import std.algorithm;
import std.range;
import std.conv;
void main()
{
enum input = ["qwerty", "a", "baz"];
enum output = input.map!(value =>
value.retro().to!string()).array.sort();
writeln(input);
writeln(output);
}
Re: allMembers broke for __
On Sunday, 17 June 2018 at 02:25:59 UTC, Adam D. Ruppe wrote: On Sunday, 17 June 2018 at 01:02:17 UTC, DigitalDesigns wrote: If this was a sane language constraint then any identifiers starting with __ that were not reserved would at least give a warning but particularly give an error! Not fail silently and break code in ways that cannot be determined otherwise. It is undefined behavior to use ANY identifier with __ leading. C works exactly the same way. I'm sure there are naive C programmers who use "__" prefix for their own purposes. Maybe it would be cleaner to create more special syntax for "internal" functions/methods, e.g require some kind of UDA in addition to the "__" prefix: @Dinternal void __someMethod() ... Then disallow "__" prefix altogether (with the exception above). Now, if someone still uses both the UDA and the prefix, he really cannot say he didn't know.
Re: Submit D Machine Learning libraries
It is funny, there is 'DLib' under C++. On Tuesday, 9 January 2018 at 20:39:25 UTC, aberba wrote: On Tuesday, 9 January 2018 at 19:46:00 UTC, aberba wrote: [1] is a curated list of machine learning libraries for several programming languages (no D library in list). I don't know much about ML that much to suggest any of those in the Dub registry. I know we have Vectorflow from Netflix (http://code.dlang.org/packages/vectorflow), D computer Vision (https://code.dlang.org/packages/dcv), and all these MIR related libs (http://code.dlang.org/search?q=mir) Please make pull request for D at https://github.com/josephmisiti/awesome-machine-learning [1] https://github.com/josephmisiti/awesome-machine-learning Might win some people over. Also http://code.dlang.org/packages/dopt (A numerical optimisation and deep learning framework)
Re: ArithEval v0.5.0 released
On Sunday, 7 January 2018 at 20:41:57 UTC, Dechcaudron wrote: Updating this library I coded more than a year ago, so that I could use it as an optional dependency of the coming up dli library. It allows the runtime evaluation of simple math expressions like `1 + 2 * 3` or `1 ^ foo`, with foo being given values at run time. It was never announced in this forum, so it is likely most of you never heard of it. The README pretty much sums up all there is to see, but do let me know if you guys have any specific doubt. Feedback is greatly appreciated. Very cool !
Re: What do you want to see for a mature DLang?
Built-in tuples:
{val1, val2} = func();
On Friday, 29 December 2017 at 07:53:51 UTC, IM wrote:
I will start:
-- Better compiler errors, better compiler errors, better
compiler errors.
I really wish that the compiler errors could receive some
refinement. Mostly it feels like some error text just being
thrown at me. It needs to be better formatted, more helpful,
with suggestions about how to fix (if possible).
To illustrate my point:
- See the compile errors I've just encountered with DMD:
https://cdn.pbrd.co/images/H0q609l.png
- Now compare that with an error produced by rustc:
https://cdn.pbrd.co/images/H0q6bLi.png
Simple things like these make a big difference. D Lang has been
around for a long while now, and hence signs of its maturity
has to show everywhere, especially in the compiler, as well as
the package manager.
Re: Proposal: Support for objects in switch statements
On Wednesday, 1 November 2017 at 01:16:32 UTC, solidstate1991
wrote:
After I started to alter my graphics engine to use the multiple
kinds of bitmaps (now using multiple language features, like
templates and aliases) on one layer, I noticed that type
detection of bitmap objects would be easier and better
readable, if instead of:
if(bitmapObject.classinfo == typeof(Bitmap4Bit)){
...
}else if(bitmapObject.classinfo == typeof(Bitmap8Bit)){...
I could easily use this:
switch(bitmapObject.classinfo){
case typeof(Bitmap4Bit):
...
case typeof(Bitmap8Bit):
}
On the other hand I cannot really think other uses for such
language feature, maybe with structs.
The idea IS good, I am sure it has already happened to many.
May it be there are some technical problems with it ?
What is wrong with core.stdc.signal ?
Core.stdc.signal.signal() requires that a signal handler function is "nothrow @nogc @system". These attributes impose quite a limitation - one cannot even print which signal was accepted. While if one imports this same function via "extern (C)" path, he can freely throw and allocate memory in the signal handler. And this actually makes sense, as the handler function is called on top of the stack of where the code was running when the signal popped in, so it's like calling a function. Why the limitation if it works ?
Re: How to list all process directories under /proc/
On Sunday, 17 September 2017 at 08:15:58 UTC, Ky-Anh Huynh wrote:
Hi,
I want to list all processes by scanning /proc/. The following
code doesn't work
[code]
foreach (string fstatm; dirEntries("/proc/", "[0-9]*",
SpanMode.shallow)) {
writefln("pid %s", fstatm);
}
[/code]
as it only list a few entries before exiting
[code]
pid /proc/9
pid /proc/935
pid /proc/9146
pid /proc/9149
pid /proc/9150
pid /proc/9151
pid /proc/9756
pid /proc/9759
pid /proc/9760
pid /proc/9761
[/code]
I don't want to use `SpanMode.depth` or `SpanMode.breadth`
because it will scan so deeply and there would be a permission
problem.
Any ideas?
Thanks a lot
Are you familiar with libprocps ?
Maybe you had better make use of this library, or, at least, peek
into its code, for reference.
Re: real simple delegate question.
On Saturday, 19 August 2017 at 18:33:37 UTC, WhatMeWorry wrote: On Friday, 18 August 2017 at 20:39:38 UTC, angel wrote: On Friday, 18 August 2017 at 02:38:15 UTC, WhatMeForget wrote: [...] This actually appears correct ... The 1-st example: Each call to makeCalculator() increments a static (i.e. shared among all makeCalculator() instances) variable - context. In addition, makeCalculator() generates a random variable. Whereas the delegate merely captures these variables, and the displayed results reflect this. The 2-nd example: There is a single call to makeCalculator(). After this call, context == 1, randy == _apparently 2_. Now the delegate, as has already been said, merely captures these values, so consecutive calls do not change the result. Thanks. So, auto calculator = makeCalculator(); is the actual call of the delegate? "Delegate is function pointer with context" But what is ...calculator(0)); Or maybe another approach would be to ask, what type is the compiler replacing auto with. No ! The actual call to the delegate is calculator(0). But this delegate does not induce change on its context variables, so it is expectable that consecutive calls to calculator(0) produce the same results, isn't it ? makeCalculator(), while not a delegate, also has a context variable - "static int context" - this is an "old-school" context variable implemented by the means of static variable. Consecutive calls to makeCalculator() return delegates having different contexts, so each call to calculator(0) produces different results.
Re: real simple delegate question.
On Friday, 18 August 2017 at 02:38:15 UTC, WhatMeForget wrote:
Can someone explain what is the difference between the two?
Thanks.
module gates;
import std.stdio;
import std.random;
alias Calculator = int delegate(int);
Calculator makeCalculator()
{
static int context = 0;
int randy = uniform(1, 7);
context++;
writeln("context = ", context);
writeln("randy = ", randy);
return value => context + randy + value;
}
void main()
{
for (int i = 0; i < 3; i++)
{
auto calculator = makeCalculator();
writeln("The result of the calculation: ",
calculator(0));
}
}
returns:
context = 1
randy = 5
The result of the calculation: 6
context = 2
randy = 2
The result of the calculation: 4
context = 3
randy = 6
The result of the calculation: 9
while the following
void main()
{
auto calculator = makeCalculator(); // thought just one
would work
for (int i = 0; i < 3; i++)
{
writeln("The result of the calculation: ",
calculator(0));
}
}
returns:
The result of the calculation: 3
The result of the calculation: 3
The result of the calculation: 3
This actually appears correct ...
The 1-st example:
Each call to makeCalculator() increments a static (i.e. shared
among all makeCalculator() instances) variable - context.
In addition, makeCalculator() generates a random variable.
Whereas the delegate merely captures these variables, and the
displayed results reflect this.
The 2-nd example:
There is a single call to makeCalculator().
After this call, context == 1, randy == _apparently 2_.
Now the delegate, as has already been said, merely captures these
values, so consecutive calls do not change the result.
Re: Create class on stack
On Saturday, 5 August 2017 at 17:08:32 UTC, Johnson Jones wrote: using gtk, it has a type called value. One has to use it to get the value of stuff but it is a class. Once it is used, one doesn't need it. Ideally I'd like to treat it as a struct since I'm using it in a delegate I would like to minimize unnecessary allocations. Is there any way to get D to allocate a class on the stack like a local struct? Emplace ? https://dlang.org/phobos/std_conv.html#emplace
Re: Is this related to D?
On Wednesday, 26 July 2017 at 18:09:23 UTC, Andrei Alexandrescu wrote: I got this on a Google Alert for "dlang": https://launchpad.net/ubuntu/+source/language-pack-kn/1:17.10+20170724/+build/13147073. Is it connected to the D language? -- Andrei No, this is related to Kannada language translation, which is a human language.
Re: Showcasing the power of D on HackerRank
On Saturday, 1 April 2017 at 19:17:01 UTC, aberba wrote: HackerRank (https://www.hackerrank.com) "is a place where programmers from all over the world come together to solve problems in a wide range of Computer Science domains such as algorithms, machine learning, or artificial intelligence, as well as to practice different programming paradigms like functional programming.". My point is, the modeling power, etc. of D can be showcased on this platform... "We run regular hackathons with cash prizes. For our sponsored competitions, we even connect you to companies who are hiring as long as you opt-in to being contacted". "Jobs. Solving the coding challenges at our Jobs page lets you apply for software engineering positions at a variety of companies at once, or even just the companies you're interested in working for." "Paid Contributor. You can create your own challenges and become a paid contributor." Is sound goo what I'm reading in their FAQ (https://www.hackerrank.com/faq) D is already supported (at least in the algorithms section). I take their challenges from time to time ... always in D.
Re: What about this logo ":D" to advertise the D language ?
On Thursday, 2 March 2017 at 12:31:27 UTC, qznc wrote: On Thursday, 2 March 2017 at 09:45:40 UTC, Martin Tschierschke wrote: On Thursday, 2 March 2017 at 09:05:43 UTC, Jared Jeffries wrote: I'm not completely joking ;) D deserves a lot more fame, because it really allows programmers to "develop with a smile", so maybe the logo and slogan should reflect it... With D you can get the job done, as with C++, Java, C#, Node.js etc, but easier, faster, safer and with a lot more pleasure ! D is really good at this, hence the logo :D I like it! The D evolution: :-( => :-| => :-) => ;-) => :D Why D? Give your coding a smile :D Isn't it :C => :C++ => :D Much better than :C# of course. Your :C++ looks like someone throwing up. Well ... maybe this is intentional.
Re: Factory using an alias template parameter to set a member of the new tool ?
On Thursday, 9 February 2017 at 14:39:41 UTC, angel wrote:
On Thursday, 9 February 2017 at 13:30:07 UTC, jkpl wrote:
I'm looking for a better way to do this, if possible:
```
class Tool
{
string name;
}
T namedTool(alias Variable, T)()
{
T result = new T;
result.name = Variable.stringof;
return result;
}
void main()
{
Tool grep;
grep = namedTool!(grep,Tool);
assert(grep.name == "grep");
}
```
Ideally this would work like this:
```
Tool grep = namedTool!Tool;
assert(grep.name == "grep");
```
Possible ?
Sorry, but this does not make much sense to me ...
You expect "namedTool!Tool" to know that the name of the Tool
must be set to "grep".
The expression evaluation proceeds from right to left, so at
the time of analyzing "namedTool!Tool", the compiler knows
nothing about "grep".
On the other hand, if you supplied the "grep" variable, the
compiler could infer its type, like this:
```
...
auto namedTool(alias Variable)()
{
alias T = typeof(Variable);
T result = new T;
result.name = Variable.stringof;
return result;
}
void main()
{
Tool grep;
grep = namedTool!(grep);
assert(grep.name == "grep");
}
```
Or actually, maybe this will suite your case better:
```
template namedTool(T, alias Variable)
{
enum namedTool = T.stringof ~ " " ~ Variable ~ " = new " ~
T.stringof ~ ";" ~
Variable ~ ".name = \"" ~ Variable ~ "\";";
}
void main()
{
mixin(namedTool!(Tool, "grep"));
assert(grep.name == "grep");
}
```
Re: Factory using an alias template parameter to set a member of the new tool ?
On Thursday, 9 February 2017 at 13:30:07 UTC, jkpl wrote:
I'm looking for a better way to do this, if possible:
```
class Tool
{
string name;
}
T namedTool(alias Variable, T)()
{
T result = new T;
result.name = Variable.stringof;
return result;
}
void main()
{
Tool grep;
grep = namedTool!(grep,Tool);
assert(grep.name == "grep");
}
```
Ideally this would work like this:
```
Tool grep = namedTool!Tool;
assert(grep.name == "grep");
```
Possible ?
Sorry, but this does not make much sense to me ...
You expect "namedTool!Tool" to know that the name of the Tool
must be set to "grep".
The expression evaluation proceeds from right to left, so at the
time of analyzing "namedTool!Tool", the compiler knows nothing
about "grep".
On the other hand, if you supplied the "grep" variable, the
compiler could infer its type, like this:
```
...
auto namedTool(alias Variable)()
{
alias T = typeof(Variable);
T result = new T;
result.name = Variable.stringof;
return result;
}
void main()
{
Tool grep;
grep = namedTool!(grep);
assert(grep.name == "grep");
}
```
Re: capture stdout or stderr
On Wednesday, 1 February 2017 at 01:08:19 UTC, Emil wrote:
is it possible to intercept the STDOUT or STDERR and capture
the output into a variable ?
some pseudocode to explain what I mean
string[] output_buffer;
stdout.capture_to(output_buffer);
writeln("test 1"); # not printed
writeln("test 2"); # not printed
stdout.release(output_buffer);
writeln("test 3"); # printed
writeln(output_buffer); # prints '["test 1","test 2"]'
No.
Please keep in mind, that in Linux, for example, stdout is a file
...
writeln() interacts with OS API, which, of course, has nothing to
do with internal data structures of your application.
What you could probably do is replace writeln() with a custom
logger. In your logger implementation you can add such
functionality.
Re: @property get/set or public varaible?
On Sunday, 4 December 2016 at 15:30:22 UTC, vladdeSV wrote: Hello! I have a question not directly related to D as it is with coding standards. My issue at hand is if I have one variable for a class, which I want to be directly accessible for anything else, should it be 1. public, or 2. private, with @property get/setters? From what I have been told is that variables should be private. But if I do not want to make any checks whatsoever when setting a variable, I see no benefit to the private approach. Are there any other reasons to use get/setters? Make the member variable public, if it serves your purpose. If (and when) you feel like taking some control over setting and getting its value, you will upgrade it to @property setter/getter, making the actual member variable private. For most reasonable use cases the upgrade should pass with no problems. ... If you envision such an upgrade possibility, try to keep away from taking your member variable address, and other not method-friendly operations, that might hold the upgrade back.
Re: ThinLTO is there. I think that should settle the final/virtual debate
On Sunday, 4 December 2016 at 01:36:50 UTC, deadalnix wrote: First, presentation: https://www.youtube.com/watch?v=9OIEZAj243g Some of this is available in LLVM today, and everything presented here will be in 4.0 . The long story short: ThinLTO can do most of what LTO does but with a price that is much closer to the one of a regular build than the one of a classic LTO build. LTO optimization can devirtualize all function that do not need to be virtual, and even use profile infos to speculatively devirtualize - aka JVM grade devirtualization. I would love to see this leveraged to finally put to rest the final vs virtual debate. If we use this tech properly, everything that do not need to be virtual can be finalized - except across shared object, which shouldn't be too much of an issue in practice. IMHO it was always obvious that the proper way is "devirtualization" within compiler optimization process. The distinction between virtual and non-virtual methods is a break-in into optimization domain, which should be "transparent" to the developer. From the developer's POV, the correct semantics is when each method is virtual.
An interesting article on GC interaction with OS scheduler
This article presents an insight into a peculiar interaction between Java GC and Linux scheduler on the background of Linux containerization technology - the CGROUP. IMHO the CGROUP only amplifies the discussed impact, that exists anyway. A short summary: Linux scheduler allocates a time slice for an application to run. When the time slice is depleted (i.e. all the application threads together have eaten up all the time resource), the application is stopped until next time slice is allocated. Many-threaded GC is able to deplete the time slice very quickly, causing Stop-The-World effect, even in generally concurrent GC design. https://engineering.linkedin.com/blog/2016/11/application-pauses-when-running-jvm-inside-linux-control-groups
Re: Examples Wanted: Usages of "body" as a Symbol Name
On Wednesday, 5 October 2016 at 02:11:14 UTC, Meta wrote:
I'm currently writing up a DIP to propose removing `body` as a
keyword to allow it to be used for variable names, functions,
etc. I'm looking for examples and contexts where `body` would
normally be used as a variable, function name, alias, etc. This
is what I have come up with off the top of my head:
- In web programming where "body" is a required tag in any
valid HTML document. Ex:
- It is a name commonly used for XML tags and/or attributes
- Physics simulations as well in astronomical contexts
("planetary bodyies", etc.)
- Video games, such as referring to the player character's body
Really, why do we need a _body_ ?
We have pre-condition and post-condition (in and out), everything
else is a body.
It is simply inconsistent - a regular function with no in and out
blocks has no body block. Now one adds a pre-condition (and / or
post-condition) - whoop - one needs to wrap the whole function
body ... well in a body expression.
Re: iPhone vs Android
I think the conclusions about iOS vs. Android OS-level memory collection are not applicable to D GC discussion. An OS collects all the memory pages allocated for a process upon exit - no heap scan, no RC. It more resembles a one huge free() call. The discussion is mainly about eager vs. less-eager not-currently-running process killing strategy. D's GC lies in a different plane ...
Is it a bug in unittest ?
If one creates a unittest block in a templated class (or struct),
the unittest block will be multiplied per class specialization,
which might turn out to be quite large number.
E.g.
struct A(T) {
...
unittest {
...
}
}
...
auto a = A!int;
auto b = A!int;
auto c = A!double;
The unittest block will be instantiated twice (per A!int and
A!double).
But in some (many ?) cases unittest doesn't even exercise the
generics, merely using some particular type.
What is it, a bug ?
Re: Is this the best way to share Tids between threads?
Let each thread have a name related to its task. It is like having a shared Tid array, but already implemented. Reference: http://dlang.org/phobos/std_concurrency.html#.register
Re: [OT] The coolest (literally) desktop machine I've ever had
I happen to be CompuLab's ex-employee, and I have even been involved in SW development of the AirTop computer ... So it is D-friendly at least to the extent, that a D fan was involved in its development. It is indeed quite powerful. The technical support is also very good. Building a fanless computer is not a simple issue at all, especially when it is such powerful. As a side note, there are cheaper and much (physically) smaller computers such as IntensePC, that are also very cool - refer to www.compulab.co.il. I am no more associated with CompuLab, so this is in no way an advertisement :)
Re: Graylog Extended Log Format (GELF) for D
But what about this ? https://forum.dlang.org/thread/eryphpbznrrovjvxj...@forum.dlang.org
Re: Defer in D
I would, actually, like to see it integrated with the core language syntax, kinda: scope(function) ... While your solution is viable from the technical point of view, having a consistent language syntax could also be nice.
Re: The relationship of invariants and alias this
Wait ! x.value -= 100; would call the invariant ? Alias this only rewrites your expression: x -= 100; becomes x.value -= 100; No method is called. Then there is no reason (is there ?) to call the invariant. If you would create getter/setter properties ...
Re: spawnProcess() not child?
The parent / child relationship always exists. In POSIX OSs, you may ignore SIGCHLD signal (announcing child process death), so that in case of child process exit it will not become zombie, rather it will be disposed on the spot. As a side note, in Linux, there exist a system call allowing process re-parenting, but it is intended for use in experimenting, rather than in normal use case. Side note II, there is no real chance of wrapping PID numbers around in a reasonable time frame.
