Re: Using core/sys/posix/mqueue.d on FreeBSD
On Saturday, 6 April 2024 at 12:05:56 UTC, Jonathan M Davis wrote: Actually, since I'm usually the one who does the FreeBSD ones anyway, here you go: https://github.com/dlang/dmd/pull/16359 The declarations compile, and they should match the ones in C, since I copied them over and then tweaked them, but I haven't actually tested them. All that being said, even if they're merged immediately, they won't be available as part of druntime until dmd 2.109.0 is released (and 2.108.0 was released less than a week ago), so you'll probably need to copy them into your own install or use the development version of dmd to get the updated bindings if you want to use them now. - Jonathan M Davis This is awesome, Jonathan! Thanks a lot for your elaboration on the issue, no wonder I got confused, and of course the PR! Really appreciated. Thanks!
Re: Serial communication library
On Saturday, 24 September 2022 at 08:52:42 UTC, Imperatorn wrote: On Thursday, 22 September 2022 at 12:05:00 UTC, Imperatorn wrote: Hi guys! What's the best/preferred library to use for serial communication (RS)? Thanks I will give onyx-serial a try Also on code.dlang.org: https://github.com/NCrashed/serial-port Depending on you specific needs, using the platform/os api is also an option.
Re: What are (were) the most difficult parts of D?
On Thursday, 12 May 2022 at 11:05:08 UTC, Basile B. wrote: 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 Overhall I think that D was not hard to learn because well designed (i.e intuitive). I concur.. A few specific points however that I remember - Certain variant forms of the `is` Expression are not obvious (not intuitive), I'm pretty sure I still cant use them without a quick look to the specs. Yes indeed, had to read through the then excellent pdf()https://github.com/PhilippeSigaud/D-templates-tutorial by Philippe Sigaud (of PEG) to grasp the whole idea first, and still have to look it up when the need to use it arises... - Operator overloading in certain cases was confusing, I remember that for one particular form once I had to use your book instead of the official specs (when opSlice and opIndex are combined) Indeed same experience. Also opCmp and opEquals caused some confusion. D's [][] !== C's [][], Range peculiarities w.r.t some algo's (algo want's fwdRange but got inputRange but did not have the constraint ea) lazy vs eager algorithms (the need to call .array) The main difficulty I had is actually not specific to D. It was to accept that a GC is OK. Nice one. I recon I have to think much harder sometimes to know where the data is and 'who' has access: stack heap tls mutexed or not whatever, but find myself almost never asking this question anymore in D, which I use(d) to do almost all the time in c++ land. The need for it is almost removed by D.
Re: error connecting to mongodb atlas with vibe.d
On Saturday, 30 April 2022 at 14:29:56 UTC, notsteve wrote: Hi, I am trying to setup a simple webserver in D using vibe.d (0.9.4) and want to use mongoDB as a database. To achieve this, I've set up a mongoDB atlas instance with the following command inside the standard app.d file created by vibe.d ``` string MongoURL = "mongodb://username:@cluster0-shard-00-01.gaetq.mongodb.net:27017"; auto client = connectMongoDB(MongoURL); ``` but am getting error [1] below. Alternatively if I use the following path to the instance ``` string MongoURL = "mongodb://username:passw...@cluster0-shard-00-01.gaetq.mongodb.net:27017/myFirstDatabase?ssl=true=false"; ``` I get error [2]. I have tried accessing this instance using other programming languages and am not having any issues so am sure it is not an issue with the database instance. Does anyone have experience with this? Error 1: ``` object.Exception@../../../.dub/packages/vibe-core-1.22.3/vibe-core/source/vibe/core/net.d(777): Reached end of stream while reading data. ``` https://github.com/vibe-d/vibe-core/blob/v1.22.3/source/vibe/core/net.d#L777 Apparently, no data is received anymore within the remaining time duration. Error 2: ``` object.Exception@../../../.dub/packages/vibe-d-0.9.4/vibe-d/data/vibe/data/bson.d(813): BSON value is type 'int_', expected to be one of [double_] ``` https://github.com/vibe-d/vibe.d/blob/v0.9.4/data/vibe/data/bson.d#L813 There is clearly something wrong with the type expected and provided. Check the schemes/layouts.
Re: stripping binaries from LDC2
On Monday, 7 February 2022 at 13:14:19 UTC, max haughton wrote: On Monday, 7 February 2022 at 12:16:53 UTC, Arjan wrote: In c++ our release builds are build `-O2 -g` and the resulting binaries are stripped with GNU/strip. Is this also possible with LDC2 generated binaries for D code? So build D code with `-O2 -g` and then strip the resulting binary? Why build with debug info if you're going to strip it anyway? The stripped release binaries are going to the client, when a problem occurs get a core dump, using the core dump + the original binary / symbol gives full debug info off site. It is common practice.
stripping binaries from LDC2
In c++ our release builds are build `-O2 -g` and the resulting binaries are stripped with GNU/strip. Is this also possible with LDC2 generated binaries for D code? So build D code with `-O2 -g` and then strip the resulting binary?
Re: How to loop through characters of a string in D language?
On Friday, 10 December 2021 at 06:24:27 UTC, Rumbu wrote:
On Wednesday, 8 December 2021 at 11:23:45 UTC, BoQsc wrote:
Let's say I want to skip characters and build a new string.
The character I want to skip: `;`
Expected result:
```
abcdefab
```
Since it seems there is a contest here:
```d
"abc;def;ghi".split(';').join();
```
:)
```d
"abc;def;ghi".tr(";", "", "d" );
```
Re: KQueue and Fibers
On Friday, 9 April 2021 at 09:00:17 UTC, rashir wrote: Goodmorning everyone, I'm trying to understand both Kqueue and Fiber's operation on Mac. Why don't I get the correct data as long as I read from the socket? It seems to be reading too early, but Kquue tells me that the socket is readable. ... yield for readibility kqueue waiting for readibilty resuming fiber as it's readable 131858 read bytesRead: -1readableAmount:131858 errno:35 35 == EAGAIN This informs the operation (recv) could not complete without blocking and should be retried. This does not mean the socket is not readable, but the operation would block (for whatever reason).
Re: Vibe.d diet template help
On Sunday, 7 February 2021 at 00:05:51 UTC, Tim wrote: Hi all, I'm trying to render a diet template out to a WebSocket as a string to be inserted into a specific portion of the currently served page. Does anyone know how to go about this? Is the websocket really needed? Otherwise a plain XHR would be advised which would Just implie another handler.
Re: Using a betterC dub package in ordinary D
On Friday, 8 January 2021 at 20:19:59 UTC, Bastiaan Veelo wrote: Off topick, the original js implementation is documented to not generate results that are guaranteed to be correct. I could not find information on what the conditions are that cause deviations, and how large these then can be. Do you have an idea about this or experience with accuracy of the algorithm? I am looking into whether earcutd can replace GLU tesselation. We use the result for engineering purposes (not only visualisation) and correctness is important to us. I've used documentation and implementations from David Eberly at https://www.geometrictools.com/ and also on github nowadays to get 'correct' or at least 'predictable' behavior for various geometric challenges. Using this library solved various issues for us. The documentation is great!
Re: Nasty supprise when using c 'anonymous struct and union' in D with 'static struct'
On Tuesday, 29 December 2020 at 17:49:20 UTC, Steven Schveighoffer wrote: On 12/29/20 12:13 PM, Arjan wrote: On Tuesday, 29 December 2020 at 14:42:07 UTC, Steven Schveighoffer wrote: On 12/29/20 7:38 AM, Arjan wrote: see https://en.cppreference.com/w/c/language/struct structs only add context pointers if nested in functions (and even then, only if it's not POD). If nested in structs, classes, or unions (or anything else), then no context pointer is added. So the answer is, don't use static. That is what I discovered indeed. Thanks both for answering and the additional information. This could however be made more explicit and clear in the documentation.
Re: Nasty supprise when using c 'anonymous struct and union' in D with 'static struct'
On Tuesday, 29 December 2020 at 14:42:07 UTC, Steven Schveighoffer wrote: On 12/29/20 7:38 AM, Arjan wrote: see https://en.cppreference.com/w/c/language/struct I added in some printouts of the addresses of the variables. It appears that if you add static to the struct, it now becomes a static member of the union, which means it's not an instance variable, and is now a thread-local variable. Its address doesn't even coincide remotely with the address of v1. What is the equivalent behavior for C that you are expecting? The usage of "static struct" doesn't appear in that page you linked to. On the C/C++ side there is no static. I added those on the D side to to make sure there is no context pointer being added, since that will change the layout and size of struct. (in the c/c++ code those unions and structs are nested several levels deep) Based on this: https://dlang.org/spec/struct.html#nested I expected to have the equivalent of C behavior in D by using the static keyword, which in this case just caused havoc. So the other way around.
Nasty supprise when using c 'anonymous struct and union' in D with 'static struct'
see https://en.cppreference.com/w/c/language/struct
It seems the 'static' must NOT be used here to get the equivalent
behavior of c, when left in the assertions will fail.
Is this expected?
```
unittest
{
struct W
{
align(1):
long k;
long l;
}
struct V
{
align(1):
union // anonymous union
{
/*static*/ struct // anonymous structure
{
long i;
long j;
}
W w;
}
int m;
}
V v1;
v1.i = 2;
assert( 2 == v1.w.k );
v1.w.l = 5;
assert( 5 == v1.j );
}
```
name enum vs static named enum
What is the usage of `static` in this? :
```
static enum Status
{
NONE,
BUSY,
...
}
```
Dub cmdline overrides?
Is there a cmdline switch to DUB to override certain dub.sdl settings for a dependency? Like the addition or override to lib dirs or link-libs? For example once and a while I run into linking issues with symbols not found due to the `soname` being different on my system than specified in some dependency dub.sdl. Or the lib path to the shared lib is different.
Re: How to use bootstrap with vibe.d.
On Thursday, 5 November 2020 at 16:22:11 UTC, Alaindevos wrote: This is from the bootstrap documentation. I think you must adapt this to .dt files. dt files are basically pugjs https://pugjs.org/ files. When you use vscode with this extension: https://marketplace.visualstudio.com/items?itemName=ditto.convert-html-to-pug It becomes easy to convert from html to pug/dt.
Re: How to use bootstrap with vibe.d.
On Thursday, 5 November 2020 at 16:22:11 UTC, Alaindevos wrote:
This is from the bootstrap documentation. I think you must
adapt this to .dt files.
```
...
...
html( lang='nl' )
head
title #{pageTitle}
meta( charset="utf-8")
meta( name="viewport"
content="width=device-width, initial-scale=1,
shrink-to-fit=no" )
link( rel="stylesheet"
href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css;
integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous")
//- fontawesome icons from localhost
link( rel="stylesheet" href="/css/fontawesome.css" )
link( rel="stylesheet" href="/css/brands.css" )
link( rel="stylesheet" href="/css/solid.css" )
body
//- main page0
div.d-flex.flex-column.h-100
//- nav bar
nav.navbar.navbar-expand-sm.sticky-top
...
```
Like this.
Re: D binary io functions
On Sunday, 30 August 2020 at 06:00:20 UTC, Andy Balba wrote: going nuts trying to figure out which D functions will read/write binary files see this blog: http://nomad.uk.net/articles/working-with-files-in-the-d-programming-language.html
Re: scope guard question
On Tuesday, 30 June 2020 at 12:18:14 UTC, Steven Schveighoffer wrote: On 6/30/20 2:56 AM, Arjan wrote: On Monday, 29 June 2020 at 22:47:16 UTC, Steven Schveighoffer wrote: [...] Thanks for the assurance. The spec does state it like this: ``` The ScopeGuardStatement executes NonEmptyOrScopeBlockStatement at the close of the current scope, rather than at the point where the ScopeGuardStatement appears. ``` Which is correct, but there is no single example with a return where the ScopeBlockStatement interferes with the return. I started wondering about this since I hit a bug in a piece of code. I can see where it would be confusing, and it could probably contain an example and clarification. -steve That would certainly be helpfull.
Re: scope guard question
On Monday, 29 June 2020 at 22:47:16 UTC, Steven Schveighoffer wrote: Yes. The return statement is inside the scope of the function, so it runs before the scope is exited. Are you saying the spec doesn't say that? Thanks for the assurance. The spec does state it like this: ``` The ScopeGuardStatement executes NonEmptyOrScopeBlockStatement at the close of the current scope, rather than at the point where the ScopeGuardStatement appears. ``` Which is correct, but there is no single example with a return where the ScopeBlockStatement interferes with the return. I started wondering about this since I hit a bug in a piece of code.
scope guard question
```
void main()
{
import std.stdio;
auto f = (){
string[] t;
{ // inner scope
t ~= "hello";
scope( exit ) t ~= "world";
} // inner scope exit
return t;
};
f().writeln; // ["hello", "world"]
}
```
removing the inner scope in f() gives ["hello"]
So when no inner scope is present, the scope exit 'runs' after
the return? Is that indeed expected behavior according to the
specification?
Vibed unix socket
I noticed vibe has gained support for unix sockets. What is unclear (at least from API docs) how to create a raw unix stream socket. should `listenTCP` and `connectTCP` be used? Seems weird because those require a 'port'..
Re: Program exited with code -11
On Wednesday, 18 September 2019 at 13:22:03 UTC, Danny Arends wrote: Hey all, "Program exited with code -11" Not signal 11? On unix/linux I assume?
Re: Recommendations for best JSON lib?
On Sunday, 21 April 2019 at 02:09:29 UTC, evilrat wrote: On Saturday, 20 April 2019 at 20:44:22 UTC, Guillaume Piolat wrote: On Saturday, 20 April 2019 at 18:49:07 UTC, Nick Sabalausky I also tried experimental std json, asdf and vibe.d. The only one that worked for me is vibe.d JSON subpackage, and What was the problem with asdf? I've succesfully used it in the past.
dub default settings
I find myself typing over and over again the same things like '-a x86_64'. Is it somehow possible to set those defaults?
Re: howto run unittest of a single module in dub driven project?
On Monday, 5 March 2018 at 11:26:37 UTC, Atila Neves wrote: On Sunday, 4 March 2018 at 10:43:06 UTC, Arjan wrote: Is it somehow possible to only run the unittests of a single d file within a dub project? Of course without resorting to typing the complete commandline with all versions includes switches etc. You could use unit-threaded: http://code.dlang.org/packages/unit-threaded You'd still need to build everything, but `dub test` would take care of that. I started working on, and need to get back to, a way of only building one module and needed dependencies. Atila Thanx will take a look at it and yes that would be exactly what I was after!
Re: howto run unittest of a single module in dub driven project?
On Sunday, 4 March 2018 at 16:51:06 UTC, Basile B. wrote: [1] https://github.com/BBasile/Coedit/commit/f8c5e686c8c6aaa7dc2c770121767e3e59806a0e Thanks for givin me the idea original poster. Guess I will have to give coedit another try then.. ;-) So you do use dub behind the scenes so it seems? Care to elaborate a little on how you achieved this?
howto run unittest of a single module in dub driven project?
Is it somehow possible to only run the unittests of a single d file within a dub project? Of course without resorting to typing the complete commandline with all versions includes switches etc.
Re: Debugging bad requests with vibe
On Friday, 9 February 2018 at 11:46:31 UTC, Nicholas Wilson wrote: On Friday, 9 February 2018 at 08:06:53 UTC, Seb wrote: On Thursday, 8 February 2018 at 17:09:44 UTC, Nicholas Wilson wrote: Is there a way I can see/log what requests are being made? I can change both the client and server. -v and -vv All that gives me is a bunch of [FAC3BFF6:FAC451F6 dia] Actively closing TCP connection is there a way to get the JSON being sent? Wireshark?
Re: Vibe.d rest & web service?
On Wednesday, 7 February 2018 at 20:23:10 UTC, Nicholas Wilson wrote: On Wednesday, 7 February 2018 at 19:50:31 UTC, Jacob Carlborg wrote: Have you tried this? No. But apart from the fact that I forgot to make the class inherit from an interface to that the rest interface would actually compile, the web interface is routed before the rest interface and so the rest interface would never be reached since the methods are all the same and the REST's are shadowed by the web's . Makes me wonder whether or not vibe does honor the http request Accept headers? e.g.: application/json or application/javascript or text/html etc.
Re: R.filter!(..).sort!(..)
On Tuesday, 28 November 2017 at 13:24:09 UTC, Steven Schveighoffer wrote: On 11/28/17 8:10 AM, Arjan wrote: [...] The library is correctly telling you that your filtered range is not random access. It can't be, because it lazily applies the filter (that is, it filters on each element as you popFront them). So how can it know what the e.g. 3rd element is, if you haven't run any filters yet? The array version works because you are applying the filter completely and storing the results elsewhere in one step. -Steve Well I would have liked an error msg something like: isRandomAccessRange!Range for Range=.. failed! Or unable to sort!() a lazy Range.
R.filter!(..).sort!(..)
When applying a sort!() on a filtered range I get this compiler error: Error: template std.algorithm.sorting.sort cannot deduce function from argument types !((a, b) => a.name < b.name)(FilterResult!(__lambda3, RangeT!(Array!(IssueType, candidates are: C:\D\dmd2\windows\bin\..\..\src\phobos\std\algorithm\sorting.d(1851,1):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) But it seems the problem is with the filter!() result not being a isRandomAccessRange!Range because: R.filter!(..).array.sort!(..) just works (by copying the filter results in a array). Iaw is the compiler error msg wrong? Or i'm I wrong?
Re: debugging in vs code on Windows
On Tuesday, 17 October 2017 at 03:10:52 UTC, Dmitry wrote:
On Tuesday, 17 October 2017 at 02:32:49 UTC, Domain wrote:
Can you share your tasks.json and launch.json?
tasks.json - I don't have this file.
launch.json:
{
"version": "0.2.0",
"configurations": [
{
"name": "(Windows) Launch",
"type": "cppvsdbg",
"request": "launch",
"program": "${workspaceRoot}\\parser.exe",
"args": [],
"stopAtEntry": false,
"cwd": "${workspaceRoot}",
"environment": [],
"externalConsole": true
}
]
}
Also I have changed preferences:
"debug.allowBreakpointsEverywhere": true,
Status bar:
x86_64 debug dmd
Before this will work, one must install the Microsoft C/C++ Addin
i.e. ms-vscode.cpptools.
Start debugging and select the C++ debugger.
Re: best way to interface D code to Excel
On Wednesday, 17 June 2015 at 18:35:36 UTC, Laeeth Isharc wrote: Hi. Any thoughts on the best way to write D functions that I can call from Excel? I am completely unfamiliar with Windows programming and COM (last time I wrote this kind of thing was in the mid-90s I think using xloper and C). The easiest way for now seems to be via pyxll and pyd. Wrap the D function using pyd and then call it from an annotated pyxll python function. That's probably good enough for a start, but it requires python to be installed on each user machine which I would rather not have as the end game - just a single xll would be perfect. I know D has support for COM - not sure of its status. And there was a Microsoft chap who posted here a couple of years back - wonderful templated code that made it easy to write this kind of thing. Unfortunately he wasn't able to share it publicly. So I would like to write: 1. worksheet function that will function picker and have help text in the picker. In general will take some combination of strings, doubles and arrays of doubles as arguments and return either string, double, or range/matrix of doubles. 2. vba function with similar kinds of arguments and return values. I know it's easy to do this with double** and the like - at least on the VBA side. I got a bit stuck navigating the headers when it comes to Excel strings. If anyone has some source they could point me to, and some reading material then I would very much appreciate it. This might help facilitate adoption of D within a large financial institution, but it is early days yet. And I would guess this is a common sort of use for people operating in a financial environment, since people are still attached to spreadsheets. Thanks. Laeeth. You actually want to create ActiveX/COM components in D? See the 'COM in plain C' articles by Jeff Glatt which demonstrate how to do it using C. This might give you the information needed to do it using D. http://www.codeproject.com/Articles/Jeff-Glatt#articles. An idea to accelerate a little might be to use Visual Studio with C++ to create ActiveX/COM interfaces, wrappers, etc of the components and do the actual implementation of the interfaces in D. Books (old): Inside COM and Essential COM might be handy to get hold of. HTH. Arjan
Re: dub.json dependencies per configuration?
On Wednesday, 11 February 2015 at 01:06:02 UTC, Mike Parker wrote: On 2/11/2015 8:38 AM, Arjan wrote: Snippet from: https://github.com/buggins/ddbc/blob/master/dub.json#L7 ddbc has a dependencies on mysql-native: =0.0.12. But this is only true for configurations: MySQL. Is it allowed to put the dependency within the configuration section for MySQL?. Yes. I moved the dependencies into the configuration of MySQL, but no dice. It is accepted by dub but does not make a difference when selecting an other configuration. e.g. dub build -f -c SQLite -a x86 still fetches and builds the mysql-native. Is this behavior of dub expected or a bug?
dub.json dependencies per configuration?
Snippet from:
https://github.com/buggins/ddbc/blob/master/dub.json#L7
ddbc has a dependencies on mysql-native: =0.0.12. But this
is only true for configurations: MySQL.
Is it allowed to put the dependency within the configuration
section for MySQL?.
dependencies: {
mysql-native: =0.0.12
},
targetPath: lib,
targetType: staticLibrary,
configurations: [
{
name: full,
versions: [USE_MYSQL, USE_SQLITE, USE_PGSQL],
libs-posix: [sqlite3, pq],
libs-windows: [sqlite3, libpq],
copyFiles-windows-x86: [ libs/win32/sqlite3.dll,
libs/win32/libpq.dll, libs/win32/intl.dll ],
sourceFiles-windows-x86 : [
libs/win32/sqlite3.lib, libs/win32/libpq.lib ]
},
{
name: MySQL,
versions: [USE_MYSQL]
},
{
name: SQLite,
versions: [USE_SQLITE],
libs-posix: [sqlite3],
libs-windows: [sqlite3],
copyFiles-windows-x86: [ libs/win32/sqlite3.dll ],
sourceFiles-windows-x86 : [
libs/win32/sqlite3.lib ]
},
{
name: PGSQL,
versions: [USE_PGSQL],
libs-posix: [pq],
libs-windows: [libpq],
copyFiles-windows-x86: [ libs/win32/libpq.dll,
libs/win32/intl.dll ],
sourceFiles-windows-x86 : [ libs/win32/libpq.lib ]
}
]
Re: Learning to XML with D
On Friday, 6 February 2015 at 09:15:54 UTC, Derix wrote:
So, I set sails to transform a bunch of HTML files with D.
This, of course, will happen with the std.xml library.
There is this nice example :
http://dlang.org/phobos/std_xml.html#.DocumentParser
that I put to some use already, however some of the basics seem
to escape me, specially in lines like
xml.onEndTag[author] = (in Element e) { book.author
= e.text(); };
OK, we're doing some event-base parsing, reacting with a lambda
function on encountering so-and-do tag, à la SAX. (are we ?)
What I don't quite grab is the construct (in Element e) ,
especially the *in* part.
Is it *in* as in http://dlang.org/expression.html#InExpression
? In which case I fail to see what associative array we're
considering.
It's probably more a way to further qualify the argument e were
passing to the λ-function : could someone elaborate on that ?
Of course, it is entirely possible that I completely miss the
point and that I'm overlooking some fundamentals, if so have
mercy and help me find my way back to teh righteous path ;-)
Thxxx
Maybe, when you're on windows, you could use msxml6 through COM.
You have DOM, SAX, Xpath 1.0 and XSLT at your disposal.
Re: Why hibernated does not create tables automatically?
On Friday, 6 February 2015 at 09:42:09 UTC, zhmt wrote:
class Card
{
import hibernated.core;
@Id
@Generated
long id;
@UniqueKey
string pwd;
}
MySQLDriver driver = new MySQLDriver();
string url = MySQLDriver.generateUrl(10.211.55.10, 3306,
test);
string[string] params = MySQLDriver.setUserAndPassword(root,
xxx);
auto ds = new ConnectionPoolDataSourceImpl(driver, url,
params);
EntityMetaData schema = new SchemaInfoImpl!(Card);
Dialect dialect = new MySQLDialect();
auto factory = new SessionFactoryImpl(schema, dialect, ds);
Card c = new Card;
auto s = factory.openSession();
scope(exit) s.close();
s.save(c);
Here is the simplest example, but it complains the same error.
OK,
Before the call
auto s = factory.openSession();
Does de mysql db has a db called 'test' and a table called 'card'
with columns named 'id' and 'pwd'? If not call:
factory.getDBMetaData().updateDBSchema( conn, true, true );
verify the table is created in mysql.
After create call:
factory.openSession();
...
If things are still failing take a look here:
https://github.com/buggins/hibernated/blob/master/hdtest/source/htestmain.d
This is a simple program testing some basic functions of
hibernated. Try it with sqlite first after that add a mysql
section and try again.
Re: Why hibernated does not create tables automatically?
On Friday, 6 February 2015 at 08:53:12 UTC, zhmt wrote: The app compiles fine, but It throw an exception when I try to save data to mysql : hibernated.type.MappingException@../../../zhmt/.dub/packages/hibernated-0.2.19/source/hibernated/metadata.d(3332): Cannot find entity by class ezsockacount.Dao.Customer My initialization code is something like: MySQLDriver driver = new MySQLDriver(); string url = MySQLDriver.generateUrl(10.211.55.10, 3306, test); string[string] params = MySQLDriver.setUserAndPassword(root, xxx); ds = new ConnectionPoolDataSourceImpl(driver, url, params); EntityMetaData schema = new SchemaInfoImpl!(Customer,Card,Agent); Dialect dialect = new MySQLDialect(); factory = new SessionFactoryImpl(schema, dialect, ds); Connection conn = ds.getConnection(); scope(exit) conn.close(); DBInfo db = factory.getDBMetaData(); db.updateDBSchema(conn, false, true); I checked the static EntityInfo [] entities; in SchemaInfoImpl, the length of entites is 0. And tables in mysql is not created automatically either. I found the point of this question, but dont know how to resolve it? Will anybody help me? Thx ahead!! IFAIK partial creation does not work. (bug?) Use db.updateDBSchema( conn, true, true) make sure none of the entities exist in the database. Otherwise it will fail. hth.
Re: Problem interfacing with GSL
On Sunday, 30 November 2014 at 16:26:53 UTC, Joseph Rushton Wakeling via Digitalmars-d-learn wrote: On 30/11/14 13:21, Arjan via Digitalmars-d-learn wrote: Hi! D noob here. I'm trying to call this function from the GSL lib: Out of curiosity (since your question has already been answered), what functionality is it that is making you want to use GSL? I ask because I want to be sure we're not missing something we ought to have in Phobos. I'm taking a course in statistical inference and uncertainty, since I'm learning D, i thought I'd do some numerical computing in it. Does there exist a library so I can stick in D only?
Problem interfacing with GSL
Hi! D noob here. I'm trying to call this function from the GSL lib: double gsl_stats_long_double_mean (const long double [], const size_t, const size_t); linking with: -L-lgsl -L-lgslcblas -L-lm I have tried different configurations, refering to http://dlang.org/interfaceToC.html and the forums, but it always gives me probems like, calling it the wrong way or segmentation falt. Can anyone help? Arjan
Re: Problem interfacing with GSL
On Sunday, 30 November 2014 at 13:09:15 UTC, John Colvin wrote: On Sunday, 30 November 2014 at 12:21:51 UTC, Arjan wrote: Hi! D noob here. I'm trying to call this function from the GSL lib: double gsl_stats_long_double_mean (const long double [], const size_t, const size_t); linking with: -L-lgsl -L-lgslcblas -L-lm I have tried different configurations, refering to http://dlang.org/interfaceToC.html and the forums, but it always gives me probems like, calling it the wrong way or segmentation falt. Can anyone help? Arjan the correct signature in D for that would be: import core.std.config; double gsl_stats_long_double_mean(const(c_long_double)*, const size_t, const size_t); I admit i was far from getting it right :), and was unaware of core.std.config functionalities. Thanks! Arjan.
Re: SQLite3
On Thursday, 8 May 2014 at 10:29:16 UTC, Jack wrote:
On Wednesday, 7 May 2014 at 19:03:34 UTC, Arjan wrote:
On Wednesday, 7 May 2014 at 06:21:10 UTC, Jack wrote:
First off a Disclaimer: I'm a noob and still learning. Please
don't bash me like some forums.
Now to the questions: I'm searching for a quick and easy way
to
integrate SQLite3 in my application.
maybe:
https://github.com/buggins/ddbc/wiki ?
I seem to have a problem with that library. Even if the modules
have been imported and the libraries linked and yada yada, it
spews error upon error. Sample code is this:
import std.stdio;
import ddbc.drivers.sqliteddbc;
void main(){
SQLITEDriver driver = new SQLITEDriver();
writeln(SUCCESS);
}
Error spewed out is this:
hello.d|7|Error: undefined identifier SQLITEDriver|
I think Code::Blocks is importing the modules but not detecting
the modules. Been at it for a few hours now. Any help?
Did you specify the configuration to use to dub?
dub -c SQLite
Re: SQLite3
On Thursday, 8 May 2014 at 11:48:14 UTC, Jack wrote:
On Thursday, 8 May 2014 at 11:07:06 UTC, Arjan wrote:
On Thursday, 8 May 2014 at 10:29:16 UTC, Jack wrote:
On Wednesday, 7 May 2014 at 19:03:34 UTC, Arjan wrote:
On Wednesday, 7 May 2014 at 06:21:10 UTC, Jack wrote:
First off a Disclaimer: I'm a noob and still learning.
Please
don't bash me like some forums.
Now to the questions: I'm searching for a quick and easy
way to
integrate SQLite3 in my application.
maybe:
https://github.com/buggins/ddbc/wiki ?
I seem to have a problem with that library. Even if the
modules have been imported and the libraries linked and yada
yada, it spews error upon error. Sample code is this:
import std.stdio;
import ddbc.drivers.sqliteddbc;
void main(){
SQLITEDriver driver = new SQLITEDriver();
writeln(SUCCESS);
}
Error spewed out is this:
hello.d|7|Error: undefined identifier SQLITEDriver|
I think Code::Blocks is importing the modules but not
detecting the modules. Been at it for a few hours now. Any
help?
Did you specify the configuration to use to dub?
dub -c SQLite
Yes. I've also linked the library to it.
Dub:
http://puu.sh/8DYrR.png
Code::Blocks Configuration:
http://puu.sh/8DYug.png
Ah ok. CodeBlocks does not integrate with dub.
Take a look in the dub.json file of ddbc and collect the
'versions' for the SQLite configuration (USE_SQLITE)
Add those 'versions' to the DMD commandline n codeblocks:
dmd.exe -version=USE_SQLITE -version=...
Re: DOSNEWSIZE Error
On Thursday, 8 May 2014 at 14:49:09 UTC, Jack wrote: I had a compiler error with just a DOSNEWSIZE Error with no more information. Code: http://pastebin.com/UDAgmjtx I was trying to learn to implement SQLite connections to a local file with only the path to the file and no port or localhost nonesense from this : https://github.com/buggins/ddbc/wiki I tried a google search about the error but so far it landed me into a post with no replies, and various other non-D related posts. Optlink error. Are you builing a x86_32 exe or x86_64 exe? when 32 bits use the dmd -m32 and make sure to use omf libs. when 64 bits don not use optlink but MS VS link.exe and use coff libs.
Re: SQLite3
On Wednesday, 7 May 2014 at 06:21:10 UTC, Jack wrote: First off a Disclaimer: I'm a noob and still learning. Please don't bash me like some forums. Now to the questions: I'm searching for a quick and easy way to integrate SQLite3 in my application. maybe: https://github.com/buggins/ddbc/wiki ?
