On Tuesday, 21 June 2016 at 03:06:22 UTC, H. S. Teoh wrote:
On Tue, Jun 21, 2016 at 02:48:39AM +, ketmar via
Digitalmars-d-learn wrote:
no and no. howewer, creating template mixin with default ctors
may spare you of some typing.
I think Phobos has an AutoImplement template that might do
On Tue, Jun 21, 2016 at 02:48:39AM +, ketmar via Digitalmars-d-learn wrote:
> no and no. howewer, creating template mixin with default ctors may
> spare you of some typing.
I think Phobos has an AutoImplement template that might do this for you.
Maybe take a look in std.typecons or std.meta
On Tue, Jun 21, 2016 at 02:24:03AM +, jmh530 via Digitalmars-d-learn wrote:
> I feel like I have a reasonable understanding of when to use const as
> a parameter in a function or for const member functions. However, I
> don't really understand why/when it should be used as a type modifier.
>
On Monday, 20 June 2016 at 19:39:42 UTC, Steven Schveighoffer
wrote:
On 6/20/16 12:29 PM, Vladimir Panteleev wrote:
On Monday, 20 June 2016 at 16:16:32 UTC, Steven Schveighoffer
wrote:
What is the OS support for waitid
(http://man7.org/linux/man-pages/man2/waitpid.2.html)? Seems
to have
On Tuesday, 21 June 2016 at 02:24:03 UTC, jmh530 wrote:
So the line from the spec is
"Const types are like immutable types, except that const forms
a read-only view of data. Other aliases to that same data may
change it at any time."
I tried making an alias of a const variable and modifying
no and no. howewer, creating template mixin with default ctors
may spare you of some typing.
On Monday, 20 June 2016 at 23:35:28 UTC, Steven Schveighoffer
wrote:
On 6/19/16 5:19 PM, Joerg Joergonson wrote:
On Sunday, 19 June 2016 at 20:21:35 UTC, ag0aep6g wrote:
On 06/19/2016 09:59 PM, Joerg Joergonson wrote:
This should be completely valid since B!T' obviously derives
from A!T
On Tuesday, 21 June 2016 at 00:31:51 UTC, Adam D. Ruppe wrote:
On Monday, 20 June 2016 at 21:39:45 UTC, Joerg Joergonson wrote:
adding
if (i >= previousLine.length) break;
prevents some crashes and seems to work.
So previousLine should be either the right length or null, so I
put in
On Tue, Jun 21, 2016 at 02:09:50AM +, Joerg Joergonson via
Digitalmars-d-learn wrote:
[...]
> Lets suppose A -> B means B is derived from A. That is, any object of
> B can be cast to A because the memory layout of A is contained in B
> and any object of B can be accessed as if it were an A.
It's been so long since I've had to use OOP in D that I'm
starting to forget things like this. If I have the parent class A
which defines a constructor:
class A
{
string val;
this(string val) { this.val = val; }
}
And a child class B which inherits from A:
class B: A
{
}
I get the
I feel like I have a reasonable understanding of when to use
const as a parameter in a function or for const member functions.
However, I don't really understand why/when it should be used as
a type modifier.
For instance, the Programming in D book basically just says
On Monday, 20 June 2016 at 23:10:14 UTC, ag0aep6g wrote:
On 06/20/2016 11:33 PM, Joerg Joergonson wrote:
On Monday, 20 June 2016 at 10:38:12 UTC, ag0aep6g wrote:
[...]
Is your position that Button!SliderItem should derive/inherit
from
Button!ButtonItem, enabling the cast, or do you suppose
On Monday, 20 June 2016 at 21:39:45 UTC, Joerg Joergonson wrote:
adding
if (i >= previousLine.length) break;
prevents some crashes and seems to work.
So previousLine should be either the right length or null, so I
put in one test.
Can you try it on your test image?
BTW I do a few
On 6/19/16 5:19 PM, Joerg Joergonson wrote:
On Sunday, 19 June 2016 at 20:21:35 UTC, ag0aep6g wrote:
On 06/19/2016 09:59 PM, Joerg Joergonson wrote:
This should be completely valid since B!T' obviously derives from A!T
directly
ok
and we see that T' derives from b which derives from a
On Monday, 20 June 2016 at 19:14:42 UTC, Jacob Carlborg wrote:
On 2016-06-20 16:23, Jacob Carlborg wrote:
On 2016-06-20 11:59, Nicholas Wilson wrote:
as in
@myattr
module foo;
not
module foo;
@myattr:
No, I don't think so. Because "module" can only appear the the
top of
the file (except
On 06/20/2016 11:33 PM, Joerg Joergonson wrote:
On Monday, 20 June 2016 at 10:38:12 UTC, ag0aep6g wrote:
[...]
Is your position that Button!SliderItem should derive/inherit from
Button!ButtonItem, enabling the cast, or do you suppose the cast
should succeed because the fields are compatible?
On Monday, 20 June 2016 at 21:53:42 UTC, Alex Parrill wrote:
You'd probably get better results by filing an issue with the
project's bug tracker [1]. Also by including a sample image
that causes the crash.
It doesn't make much of a difference to me, it all just ends up
in my email inbox
On Monday, 20 June 2016 at 21:39:45 UTC, Joerg Joergonson wrote:
1810:
case 3:
auto arr = data.dup;
foreach(i; 0 .. arr.length) {
auto prev = i < bpp ? 0 : arr[i - bpp];
1810:
case 3:
auto arr = data.dup;
foreach(i; 0 .. arr.length) {
auto prev = i < bpp ? 0 : arr[i - bpp];
if (i >= previousLine.length) break;
On Monday, 20 June 2016 at 16:27:29 UTC, Steven Schveighoffer
wrote:
On 6/18/16 5:55 PM, Joerg Joergonson wrote:
I wanted to switch to std.container.Array but it doesn't seem
to mimic
[] for some odd ball reason. I threw this class together and
it seems to
work.
The only problem is that I
On Monday, 20 June 2016 at 10:38:12 UTC, ag0aep6g wrote:
On 06/20/2016 01:40 AM, Joerg Joergonson wrote:
public class Button(T : ButtonItem) : Widget { ... }
public class ButtonItem : Item
{
void Do() { auto parent =
(cast(Button!ButtonItem)this.Parent); }
...
}
All this works great! As
On 6/20/16 12:29 PM, Vladimir Panteleev wrote:
On Monday, 20 June 2016 at 16:16:32 UTC, Steven Schveighoffer wrote:
What is the OS support for waitid
(http://man7.org/linux/man-pages/man2/waitpid.2.html)? Seems to have
support for async waiting of multiple processes (at least it can
return
On 2016-06-20 16:23, Jacob Carlborg wrote:
On 2016-06-20 11:59, Nicholas Wilson wrote:
as in
@myattr
module foo;
not
module foo;
@myattr:
No, I don't think so. Because "module" can only appear the the top of
the file (except for comments).
My mistake. It _is_ actually possible. It just
Untested:
// foo.d
import a, b;
mixin template Foos {
static if(is(typeof(this) == A))
void foo() { /* implementation for A */ }
static if(is(typeof(this) == B))
void foo() { /* implementation for B */ }
}
// a.d
import foo;
class A {
mixin Foos;
}
// b.d
import foo;
class
On 6/19/16 6:17 PM, Oleg B wrote:
Hello
...
How I can rewrite this code without mixin's and with one (maybe inout)
opApply?
Someone just asked a similar question about this:
https://forum.dlang.org/post/nk90v2$1fr3$1...@digitalmars.com
-Steve
On Monday, 20 June 2016 at 16:16:32 UTC, Steven Schveighoffer
wrote:
What is the OS support for waitid
(http://man7.org/linux/man-pages/man2/waitpid.2.html)? Seems to
have support for async waiting of multiple processes (at least
it can return immediately if no child has exited). One
On 6/18/16 5:55 PM, Joerg Joergonson wrote:
I wanted to switch to std.container.Array but it doesn't seem to mimic
[] for some odd ball reason. I threw this class together and it seems to
work.
The only problem is that I can't do
carray.length -= 1;
I can't override `-=` because that is on
On 6/17/16 9:53 AM, Vladimir Panteleev wrote:
std.process.wait() will wait for a child process to exit and return its
exit code. How can this be done in Vibe.d, without blocking other fibers
and without creating a new thread?
What is the OS support for waitid
On Monday, 20 June 2016 at 15:47:44 UTC, Gary Willoughby wrote:
On Monday, 20 June 2016 at 15:27:32 UTC, Adam D. Ruppe wrote:
On Monday, 20 June 2016 at 15:13:53 UTC, Gary Willoughby wrote:
I think the problem is that the delegate which is required by
opApply is allocated using the GC.
make
On Monday, 20 June 2016 at 15:27:32 UTC, Adam D. Ruppe wrote:
On Monday, 20 June 2016 at 15:13:53 UTC, Gary Willoughby wrote:
I think the problem is that the delegate which is required by
opApply is allocated using the GC.
make the delegate in opApply scope
int opApply(scope int
On Monday, 20 June 2016 at 15:13:53 UTC, Gary Willoughby wrote:
I think the problem is that the delegate which is required by
opApply is allocated using the GC.
make the delegate in opApply scope
int opApply(scope int delegate(whatever) dg)
On Monday, 20 June 2016 at 14:34:33 UTC, Mathias Lang wrote:
Can't `opApply` with `auto` return type works since it infers
attributes ?
I think the problem is that the delegate which is required by
opApply is allocated using the GC.
On Monday, 20 June 2016 at 13:51:15 UTC, Mike Parker wrote:
interface Plugin {
bool initialize();
void terminate();
Throwable getLastException();
SomeObject getSomeObject();
void returnSomeObject(SomeObject);
}
Sorry, I forgot a couple of commments. I did explain it in the
On Monday, 20 June 2016 at 14:08:58 UTC, Gary Willoughby wrote:
Is there any way to make opApply @nogc? or provide the same
foreach functionality without implementing a range interface?
I want to iterate over a piece of memory using a pointer. I
thought about using opSlice but that doesn't
On 2016-06-20 11:59, Nicholas Wilson wrote:
as in
@myattr
module foo;
not
module foo;
@myattr:
No, I don't think so. Because "module" can only appear the the top of
the file (except for comments).
--
/Jacob Carlborg
Is there any way to make opApply @nogc? or provide the same
foreach functionality without implementing a range interface?
I want to iterate over a piece of memory using a pointer. I
thought about using opSlice but that doesn't provide information
for an index in a foreach loop.
auto
On Monday, 20 June 2016 at 13:54:22 UTC, Mike Parker wrote:
The best you can do is assign it in a constructor.
Well, 'initialize' it in a constructor.
On Monday, 20 June 2016 at 13:20:04 UTC, OpenJelly wrote:
I've got a delegate as a member of a class and I want to give
it a default value. I can assign it an initial value in each
initializer of the class but I'd like to make my code more
readable and assign it a function at the declaration.
interface Plugin {
bool initialize();
void terminate();
Throwable getLastException();
SomeObject getSomeObject();
void returnSomeObject(SomeObject);
}
Sorry, I forgot a couple of commments. I did explain it in the
text, though. It was supposed to read:
interface Plugin {
On Monday, 20 June 2016 at 11:25:04 UTC, moe wrote:
Where I still have a problem is with a plugin system. I would
like to write an app that is plugin based. So that I can write
a plugin to extend the functionality of the app. I imagine that
I could copy the plugin into a folder from the
I've got a delegate as a member of a class and I want to give it
a default value. I can assign it an initial value in each
initializer of the class but I'd like to make my code more
readable and assign it a function at the declaration.
Trying to toDelegate the situation gives me the following
Thanks everyone for the info. It is very much appreciated!
What works for me right now is dealing with various packages (dub
packages) and use them in projects. I previously made too many
assumptions about how lib's and dll's work. It's much clearer now.
Where I still have a problem is with
On 06/20/2016 01:40 AM, Joerg Joergonson wrote:
public class Button(T : ButtonItem) : Widget { ... }
public class ButtonItem : Item
{
void Do() { auto parent = (cast(Button!ButtonItem)this.Parent); }
...
}
All this works great! As long as Do is not being called from a derived
class
public
as in
@myattr
module foo;
not
module foo;
@myattr:
On Friday, 17 June 2016 at 16:25:15 UTC, Vladimir Panteleev wrote:
If I were to import the time() function from MSVCR*.dll, what
size its return value would be?
MSVC runtime dll doesn't export `time` function, it exports
_time32 and _time64. `time` is a wrapper in the import library,
its
On 2016-06-19 21:53, Gary Willoughby wrote:
When compiling, what exactly does the -betterC flag do? The command help
says "omit generating some runtime information and helper functions" but
what does this really mean? Is there any specifics somewhere?
It is intended to allow you to link an
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