On Wednesday, 11 May 2022 at 05:41:35 UTC, Ali Çehreli wrote:
What are you stuck at? What was the most difficult features to
understand? etc.
To make it more meaningful, what is your experience with other
languages?
Ali
Learning D is almost a complete blur in my memory but I
distinctly
On Sunday, 15 May 2022 at 21:33:24 UTC, Ali Çehreli wrote:
D programmers don't write move constructors or move assignment.
Such concepts don't even exist.
Never say never :
https://github.com/dlang/DIPs/blob/master/DIPs/DIP1040.md
Walter is one of the authors of the DIP
Also, there's
On Wednesday, 11 May 2022 at 05:41:35 UTC, Ali Çehreli wrote:
What are you stuck at? What was the most difficult features to
understand? etc.
To make it more meaningful, what is your experience with other
languages?
Ali
Immutability. Ended up having to do so many hundreds of casts to
On 5/15/2022 8:26 AM, Kevin Bailey wrote:
I'm trying to understand why it is this way.
Great question.
The difference, in a nutshell, is a struct is a value type, and a class is a
reference type. This difference permeates every facet their behavior.
In C++, a struct can designed to be a
On Sunday, 15 May 2022 at 15:26:40 UTC, Kevin Bailey wrote:
I've done some scripting in D over the years but I never dug
into D until recently. I'm going through Learning D and I was
reminded that structs and classes are so different.
- struct methods are non-virtual while class methods are
On Sunday, 15 May 2022 at 15:59:17 UTC, Alain De Vos wrote:
Can i summarize ,
structs are value-objects which live on the stack.
class instances are reference objects which live on the heap.
the real difference, is that structs, being value types, are
passed by value, and classes, being
On Sun, May 15, 2022 at 08:05:05PM +, Kevin Bailey via Digitalmars-d-learn
wrote:
[...]
> But I asked a different question: Why can't I put a class object on
> the stack? What's the danger?
[...]
You can. Use core.lifetime.emplace.
Though even there, there's the theoretical problem of stack
On 5/15/22 13:05, Kevin Bailey wrote:
> I've been programming in C++ full time for 32 years
Hi from an ex-C++'er. :) I managed to become at least a junior expert in
C++ between 1996-2015. I don't use C++ since then.
I still think my answer is the real one. My implied question remains:
Why
On Sunday, 15 May 2022 at 20:05:05 UTC, Kevin Bailey wrote:
One question is, how should we pass objects - by value or by
reference? In C++, you can do either, of course, but you take
your chances if you pass by value - both in safety AND
PERFORMANCE. The bottom line is that no one passes by
On Sunday, 15 May 2022 at 20:05:05 UTC, Kevin Bailey wrote:
I've been programming in C++ full time for 32 years, so I'm
familiar with slicing. It doesn't look to me like there's a
concern here.
Yes, slicing is not the issue. Slicing is a problem if you do
"assignments" through a reference
On Sunday, 15 May 2022 at 15:27:32 UTC, SvGaming wrote:
[...]
It works if that code is the main function. But in the full
program that is only one of the functions and is not the main
function.
Until you post your full programm ideally in a reduced form [1]
everybody who is willing to help
Hi Mike (and Guillaume, since you posted the same link),
Thanks for the long explanation.
I've been programming in C++ full time for 32 years, so I'm
familiar with slicing. It doesn't look to me like there's a
concern here.
There seem to be a couple different questions here. I suspect
that
On Sunday, 15 May 2022 at 19:13:10 UTC, ikod wrote:
Added LIST command in v2.0.8
Thanks!
On Saturday, 14 May 2022 at 08:42:46 UTC, Anonymouse wrote:
Before I go on duplicating effort, does anyone have anything
that can access FTP beyond PUT and GET?
I need to read file information from a NAS so I know if I
should upload a file or not. `dlang-requests` has
`Request.post` and
On 5/15/22 08:27, SvGaming wrote:
> I am so confused right now. It works if that code is the main function.
> But in the full program that is only one of the functions and is not the
> main function.
Could it be that the main() function exits before calling that other
function?
You can
On 5/15/22 08:26, Kevin Bailey wrote:
> structs and classes are so different.
I think a more fundamental question is why structs and classes both
exist at all. If they could be the same, one kind would be sufficient.
And the answer is there are value types and there are reference types in
On Sunday, 15 May 2022 at 15:26:40 UTC, Kevin Bailey wrote:
I'm trying to understand why it is this way. I assume that
there's some benefit for designing it this way. I'm hoping that
it's not simply accidental, historical or easier for the
compiler writer.
There's a problem that arises with
On Sunday, 15 May 2022 at 15:26:40 UTC, Kevin Bailey wrote:
I'm trying to understand why it is this way. I assume that
there's some benefit for designing it this way. I'm hoping that
it's not simply accidental, historical or easier for the
compiler writer.
Perhaps someone more informed will
Can i summarize ,
structs are value-objects which live on the stack.
class instances are reference objects which live on the heap.
On Sunday, 15 May 2022 at 12:27:45 UTC, kdevel wrote:
On Sunday, 15 May 2022 at 12:19:22 UTC, SvGaming wrote:
[...]
[...]
Install the `strace` program (I assume you are running Linux)
and start your program under strace:
[...]
I am so confused right now. It works if that code is the main
I've done some scripting in D over the years but I never dug into
D until recently. I'm going through Learning D and I was reminded
that structs and classes are so different.
- struct methods are non-virtual while class methods are virtual
- Thus, structs can't inherit, because how would you
Hello, I want read decimal type from sql db, do some arithmetic
operations inside D program and write it back to DB. Result need
to be close to result as if this operations was performed in sql
DB. Something like C# decimal.
Exists this kind of library ind D? (ideally `pure @safe @nogc
On Sunday, 15 May 2022 at 12:19:22 UTC, SvGaming wrote:
[...]
This code runs as expected.
Strange. It does not for me. I even tried different compilers.
It simply does not ask for user input here where it is supposed
to:
```d
writef("Type the path to your USB drive: ");
string cont = readln;
On Sunday, 15 May 2022 at 12:13:14 UTC, kdevel wrote:
On Sunday, 15 May 2022 at 11:10:41 UTC, SvGaming wrote:
[...]
```
import std.stdio;
import std.process;
int main ()
{
writeln("Here is a list of your mounted drives: ");
auto mounts = executeShell("cat /proc/mounts | grep media");
On Sunday, 15 May 2022 at 11:10:41 UTC, SvGaming wrote:
I want to ask the user to select their USB drive by typing the
mount location. For some reason that does not work and just
skips over the user input part.
```d
void writeusb() {
writeln("Here is a list of your mounted drives: ");
On Sunday, 15 May 2022 at 11:10:41 UTC, SvGaming wrote:
I want to ask the user to select their USB drive by typing the
mount location. For some reason that does not work and just
skips over the user input part.
```d
void writeusb() {
writeln("Here is a list of your mounted drives: ");
I want to ask the user to select their USB drive by typing the
mount location. For some reason that does not work and just skips
over the user input part.
```d
void writeusb() {
writeln("Here is a list of your mounted drives: ");
auto mounts = executeShell("cat /proc/mounts |
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