Re: Is there a more elegant way to do this in D?
On 4/7/21 8:57 PM, Brad wrote:
auto a = [1,0,1,1,1,0,1,0,1,1,1,1,0];
I want to come out of this with a string that looks like this:
101110100
Me, me, me, me! :)
import std;
void main()
{
auto a = [1,0,1,1,1,0,1,0,1,1,1,1,0];
string s = format!"%-(%s%)"(a);
writeln(s);
}
Ali
How Add DUB packages path to Dlang Linter to avoid Errors?
When I import modules from dub im my SublimeText, D Linter show as errors. Example: 7:8 error dmd:Error module `core` is in file 'vibe\core\core.d' which cannot be read How solve it?
Re: Why I need DUB? Will never DMD don't just use import for import packages?
Here an example of using gtkd without dub : ldc2 -I/usr/local/include/d/gtkd-3 -L-lgtkd-3 -L-ldl hello.d When you run dub with parameters "--verbose" it informs you what is going on. I have not figured out how to use tkd without dub. It would be nice to know how.
Re: Database bindings
Now I see. I need to sort the packages by score. [ There are some dead monkeys in the package database ]
Re: Database bindings
On Wednesday, 7 April 2021 at 14:52:25 UTC, Alain De Vos wrote: Let's say I want to connect to the databases : - tokyokabinet - redis - mongodb - postgresql - sqlite - mysql - couchdb Which "dub add X" commands should I run for each of them ? https://code.dlang.org/search?q=database You need to choose the package(s) you want to use first, e.g. tinyredis then "dub add tinyredis"
Re: Is this bug ? format %(%)
On Wednesday, 7 April 2021 at 17:31:09 UTC, Paul Backus wrote:
On Wednesday, 7 April 2021 at 17:04:56 UTC, novice2 wrote:
On Wednesday, 7 April 2021 at 13:43:18 UTC, Paul Backus wrote:
So, you should change your code to
writefln("%-(%s, %)", s);
sorry i dont read docs so carefully
thanks
It's not your fault--this is a pretty obscure feature, and it's
not documented very well. Even after you've found the correct
page in the documentation (the page for `formattedWrite` [1]),
you have to scroll down past multiple examples to find the text
that explains it.
[1] https://dlang.org/phobos/std_format.html#formattedWrite
I have created a pull request that will hopefully make this more
prominent on the doc page:
https://github.com/dlang/phobos/pull/7944
Re: Is this bug ? format %(%)
On Wednesday, 7 April 2021 at 17:31:09 UTC, Paul Backus wrote: It's not your fault--this is a pretty obscure feature, and it's not documented very well. Even after you've found the correct page in the documentation (the page for `formattedWrite` [1]), you have to scroll down past multiple examples to find the text that explains it. [1] https://dlang.org/phobos/std_format.html#formattedWrite The docs of `std.format` are currently under strong revision, about 90% is already done, but that "feature" is among the other 10%. I hope to get that ready till the end of the month, so the next stable release will have better docs. Unfortunately it's much more difficult to change that strange behavior without breaking code. Currently I hope for Phobos 2.0 coming soon and meanwhile try to prepare `std.format` for that change.
Re: Is this bug ? format %(%)
On 4/7/21 10:04 AM, novice2 wrote:
On Wednesday, 7 April 2021 at 13:43:18 UTC, Paul Backus wrote:
So, you should change your code to
writefln("%-(%s, %)", s);
sorry i dont read docs so carefully
thanks
For the sake of completeness, I mention this feature in a couple of
other places:
http://ddili.org/ders/d.en/formatted_output.html#ix_formatted_output.%-(
https://www.youtube.com/watch?v=dRORNQIB2wA=1146s
Ali
Re: Is this bug ? format %(%)
On Wednesday, 7 April 2021 at 17:04:56 UTC, novice2 wrote:
On Wednesday, 7 April 2021 at 13:43:18 UTC, Paul Backus wrote:
So, you should change your code to
writefln("%-(%s, %)", s);
sorry i dont read docs so carefully
thanks
It's not your fault--this is a pretty obscure feature, and it's
not documented very well. Even after you've found the correct
page in the documentation (the page for `formattedWrite` [1]),
you have to scroll down past multiple examples to find the text
that explains it.
[1] https://dlang.org/phobos/std_format.html#formattedWrite
Re: Is this bug ? format %(%)
On Wednesday, 7 April 2021 at 13:43:18 UTC, Paul Backus wrote:
So, you should change your code to
writefln("%-(%s, %)", s);
sorry i dont read docs so carefully
thanks
Database bindings
Let's say I want to connect to the databases : - tokyokabinet - redis - mongodb - postgresql - sqlite - mysql - couchdb Which "dub add X" commands should I run for each of them ?
Re: Is this bug ? format %(%)
On Wednesday, 7 April 2021 at 13:31:59 UTC, novice3 wrote:
there is extra quotes, wich not present in firmat specifier.
is this bug, or i should change something in my code?
This is actually an intentional feature (albeit kind of a stupid
one). From the documentation:
Inside a compound format specifier, strings and characters are
escaped automatically. To avoid this behavior, add '-' flag to
"%(".
So, you should change your code to
writefln("%-(%s, %)", s);
Is this bug ? format %(%)
https://run.dlang.io/is/p4NVp8
```d
void main()
{
import std.stdio: writefln;
string[] s = ["a", "b", "c"];
writefln("%(%s, %)", s);
}
```
output
```d
"a", "b", "c"
```
expected
```d
a, b, c
```
there is extra quotes, wich not present in firmat specifier.
is this bug, or i should change something in my code?
Re: Read X many bytes from File to address Y
On Wednesday, 7 April 2021 at 12:57:12 UTC, tcak wrote: Well, I have a struct, that is defined as a variable already. I want to read X bytes from the file (not Struct.sizeof bytes though), and read into the struct variable without any extra buffer. file.rawRead((cast(ubyte*) _struct)[0 .. your_length]); Of course you can also just use the C function too: fread(_struct, your_length, 1, file.getFP()); the std.stdio is just a wrapper around FILE* so it offers get FP to use for the other things. It just isn't that different really aside from the little cast.
Re: Gui toolkits alive and gui toolkits dead
I meant dlang bindings.
Re: Read X many bytes from File to address Y
On Wednesday, 7 April 2021 at 12:50:01 UTC, Adam D. Ruppe wrote: On Wednesday, 7 April 2021 at 11:42:56 UTC, tcak wrote: There is rawRead, but it takes an array as parameter, which causes a dirty looking code with cast etc! What did you wrote? file.rawRead(address[0 .. desiredLength]) should do what you want. Well, I have a struct, that is defined as a variable already. I want to read X bytes from the file (not Struct.sizeof bytes though), and read into the struct variable without any extra buffer.
Re: Don't allow to reassign, but content is editable
struct A
{
private int[] a;
this(int[] b){a=b;}
int[] c(){ return a; }
@disable void opAssign();
}
struct B
{
A a;
this(int){ a=new int[5]; }
int[] b(){ return a.c; }
void f(){ a=new int[5]; }
}
Re: Read X many bytes from File to address Y
On Wednesday, 7 April 2021 at 11:42:56 UTC, tcak wrote: There is rawRead, but it takes an array as parameter, which causes a dirty looking code with cast etc! What did you wrote? file.rawRead(address[0 .. desiredLength]) should do what you want.
Re: Don't allow to reassign, but content is editable
On Wednesday, 7 April 2021 at 12:28:25 UTC, tcak wrote:
@property auto b(){ return a.ptr; } // this is a
possibility, but results with overhead of calling. Also, b is
not an array anymore, just int*.
Why are you returning a.ptr instead of just a?
If you return just a, it works fine for what you want.
You can virtually guarantee no calling overhead by simply making
that `final`; then it is easy for the compiler to inline in all
cases.
Don't allow to reassign, but content is editable
In javascript, with "const" keyword, you assign an object to a
variable. Later, you cannot assign anything else to that
variable, but content of it still can be changed. No matter by
using "immutable" or "const", I cannot imitate that. Is there a
way to do this without an overhead (like calling a function to
create a pointer)?
Example:
class Test
{
public int[] a;
public this(){ a = new int[5]; }
@property auto b(){ return a.ptr; } // this is a
possibility, but results with overhead of calling. Also, b is not
an array anymore, just int*.
}
I want this to be possible:
test.a[3] = 7;
But this wouldn't be allowed:
test.a = new int[14];
Read X many bytes from File to address Y
I am talking about std.file.File. I have opened the file, and at a specific offset. I want to read X many bytes from the file, and want it to be written to given address directly without any Magical D-stuff like ranges etc. Is there a way to do this without getting into C or Posix header files? There is rawRead, but it takes an array as parameter, which causes a dirty looking code with cast etc!
Re: Vibe.d tutorial
On Friday, 2 April 2021 at 22:29:20 UTC, Imperatorn wrote: On Thursday, 4 March 2021 at 13:47:11 UTC, Imperatorn wrote: On Monday, 1 March 2021 at 22:25:39 UTC, Rey Valeza wrote: Hi, I wrote a tutorial on Vibe.d while trying to re-learn Vibe.d. I find that most of Kai Nacke's book need updating, so I wrote a tutorial while trying to re-learn it. Here it is. https://github.com/reyvaleza/vibed/commit/27ec3678f25d1dd414fae1390677397a7bc57721 I would be glad if you can give me some feedback so I can improve it. Thanks! https://github.com/reyvaleza/vibed/blob/main/Build%20Web%20Apps%20in%20Vibe.pdf New link: https://raw.githubusercontent.com/reyvaleza/vibed/main/BuildWebAppsinVibe.pdf Looks like a really lot of work. Updating books/notes as the language/software advances is a tedious work which often gets forgotten... So cudos to you. I think you could also post to "Announcement" section of the dlang forum for a much better visibility.
Re: Gui toolkits alive and gui toolkits dead
On 2021-04-06 21:57, Alain De Vos wrote: Can we say tk ang gtk toolkits are alive. But wxwidgets , fox an fltk are dead ? Do you mean these libraries in general or D bindings to these libraries? -- /Jacob Carlborg
