On Friday, 16 June 2023 at 01:54:22 UTC, Jonathan M Davis wrote:
```d
doSomething();
scope(exit) undoSomething();
```
Thank you for your `wonderful summary`. It's worth saving the
link.
On Friday, 16 June 2023 at 01:45:35 UTC, CM wrote:
```d
auto m = Man();
assert(m.name == defaultName);
```
Do note that one cannot simultaneously have a constructor and a
static opCall, even if their parameters differ.
Thank you for your reply. This should be enough, as this type of
RAII
On Thursday, June 15, 2023 7:54:22 PM MDT Jonathan M Davis via Digitalmars-d-
learn wrote:
> On Thursday, June 15, 2023 7:18:25 PM MDT zjh via Digitalmars-d-learn wrote:
> > On Friday, 16 June 2023 at 01:00:05 UTC, Steven Schveighoffer
> >
> > wrote:
> > > B b = B.make(); // call factory function
On 6/15/23 9:59 PM, Mark Fisher wrote:
Hi,
So what if I wanted to build the strings within my library but have the
client append their own data, for example if I want to have declarative
extensions? Could this be done by using a mixin template to create the
strings in the client?
Well, as
On Wednesday, 7 June 2023 at 00:18:54 UTC, Steven Schveighoffer
wrote:
So for instance, you can do:
```d
immutable string[] strs = mod1.makeStrings() ~
mod2.makeStrings() ~ ...;
```
In a centralized place.
-Steve
Hi,
So what if I wanted to build the strings within my library but
have
On Thursday, June 15, 2023 7:18:25 PM MDT zjh via Digitalmars-d-learn wrote:
> On Friday, 16 June 2023 at 01:00:05 UTC, Steven Schveighoffer
>
> wrote:
> > B b = B.make(); // call factory function
> >
> > -Steve
>
> Thank you for your tip.
> If could simplify it a bit more, it would be even
On Friday, 16 June 2023 at 01:18:25 UTC, zjh wrote:
On Friday, 16 June 2023 at 01:00:05 UTC, Steven Schveighoffer
wrote:
B b = B.make(); // call factory function
-Steve
Thank you for your tip.
If could simplify it a bit more, it would be even better. It's
really uncomfortable without
On Friday, 16 June 2023 at 01:00:05 UTC, Steven Schveighoffer
wrote:
B b = B.make(); // call factory function
-Steve
Thank you for your tip.
If could simplify it a bit more, it would be even better. It's
really uncomfortable without `this()`.
On 6/15/23 8:52 PM, zjh wrote:
On Friday, 16 June 2023 at 00:35:48 UTC, Steven Schveighoffer wrote:
Instead, you can use factory functions to initialize.
How can `factory functions` be used to achieve effects similar to `'RAII'`?
Thank you.
B b;
becomes
B b = B.make(); // call factory
On Friday, 16 June 2023 at 00:35:48 UTC, Steven Schveighoffer
wrote:
Instead, you can use factory functions to initialize.
-Steve
How can `factory functions` be used to achieve effects similar to
`'RAII'`?
Thank you.
On 6/15/23 8:45 PM, zjh wrote:
On Friday, 16 June 2023 at 00:35:48 UTC, Steven Schveighoffer wrote:
But there is no way in D to have e.g.:
```d
B b; // runs a constructor
```
As a `C++` user, it is very terrible to simplify `RAII` without such a
method. Why must `this()` be disabled?
On Friday, 16 June 2023 at 00:35:48 UTC, Steven Schveighoffer
wrote:
But there is no way in D to have e.g.:
```d
B b; // runs a constructor
```
-Steve
As a `C++` user, it is very terrible to simplify `RAII` without
such a method. Why must `this()` be disabled? Can't there be a
On Thursday, 15 June 2023 at 21:48:10 UTC, Ali Çehreli wrote:
I have difficulty understanding the question. I think the
nested structs, extern(C), static members, etc. confuse me. I
am assuming they are not related to this question.
Ali
I used the `class` to call the`
On 6/15/23 8:31 PM, zjh wrote:
Because disabled `this()`, the behavior of `this(int i)`is inconsistent
and cannot achieve similar `RAII` as `C++`. What should I do?
You cannot have parameter-less constructors in D structs. However,
destruction works the same.
Instead, you can use factory
On Thursday, 15 June 2023 at 21:48:10 UTC, Ali Çehreli wrote:
And this is by design: In D, we rename the type and be done
with it. In C++, one needs to rename a number of functions as
well.
Ali
```d
static int e=40;
struct B{
int m;
this(int i){
Tengo una duda y es que en la documentacion de std.json hay un
ejemplo de codigo que por identidicador ponen "immutable", nose
para que sirve o de que trata. :( alguien me diga porfis :)
On 6/15/23 08:15, zjh wrote:
> I want `B` to become the following version similar to 'C++'. What should
> I do?
I have difficulty understanding the question. I think the nested
structs, extern(C), static members, etc. confuse me. I am assuming they
are not related to this question.
> ```cpp
On 6/15/23 2:21 PM, bachmeier wrote:
On Thursday, 15 June 2023 at 15:53:57 UTC, Steven Schveighoffer wrote:
On 6/15/23 10:04 AM, Jonathan M Davis wrote:
On Thursday, June 15, 2023 7:18:06 AM MDT Steven Schveighoffer via
Digitalmars-d-learn wrote:
But in general, if you want a mutable
On Thursday, 15 June 2023 at 15:53:57 UTC, Steven Schveighoffer
wrote:
On 6/15/23 10:04 AM, Jonathan M Davis wrote:
On Thursday, June 15, 2023 7:18:06 AM MDT Steven Schveighoffer
via
Digitalmars-d-learn wrote:
But in general, if you want a mutable character array that's
zero
terminated, you
On 6/15/23 10:04 AM, Jonathan M Davis wrote:
On Thursday, June 15, 2023 7:18:06 AM MDT Steven Schveighoffer via
Digitalmars-d-learn wrote:
But in general, if you want a mutable character array that's zero
terminated, you need to make a copy with a zero terminator, but type it
as mutable. I'm
On Wednesday, 14 June 2023 at 09:28:57 UTC, Cecil Ward wrote:
I’m thinking that I might had to end up writing a partial,
rather rough parser for parts of the D language. Could I get
some suggestions for help that I might find in the way of
software components? D has a very powerful regex
```d
import core.stdc.stdio;
struct A{
static int e=40;
struct B{
int m;
this(int i){
printf("%i",e);m=i;
}
~this(){
e=m;
printf("%i",e);
}
}
void f(){
B b=e;e=6;
}
void g(){
On Thursday, June 15, 2023 7:18:06 AM MDT Steven Schveighoffer via
Digitalmars-d-learn wrote:
> But in general, if you want a mutable character array that's zero
> terminated, you need to make a copy with a zero terminator, but type it
> as mutable. I'm surprised there isn't a way to do this
On 6/15/23 9:18 AM, Steven Schveighoffer wrote:
So interestingly enough, toStringz is pure, and returns an unrelated
type, so you shouldn't need to cast. However, for some reason, it does
require a cast. That seems like a bug to me.
Oh wait, a pure function can return immutable data that
On 6/14/23 11:29 PM, Pat Maddox wrote:
Hi there, I want to call a C function that upcases a string. I have
something working, I just want to check in here to see if there's a
better approach that I'm missing. I ask because `std.string.toStringZ()`
returns an `immutable char *`.
As far as I
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