Re: Python and D (PyD)
you need to tell the compiler where to look to find pyd (which it can't find in '/Library/D/dmd/src/phobos' or '/Library/D/dmd/src/druntime/import'). If you are invoking the compiler yourself use the `-I` switch (`-Ipath/to/pyd`). Or if you are using dub (I recommend this) make sure that is is in your list of dependencies. Ahhh thank you! I'm still new to the d language and dub worked fine.
Re: Storing Formatted Array Value
On Wednesday, 29 November 2017 at 07:08:12 UTC, Vino wrote:
Hi All,
Request your help, with the below code I am able to print the
value of the array without brackects , but can some on help me
on hot to store this output to a variable
Program:
import std.stdio;
import std.container;
void main()
{
auto test = Array!string("Test1", "Test2");
writefln("%(%s, %)",test[]); // output : "Test1", "Test2"
// Similar like this
auto res = `writefln("%(%s, %)",test[])`;
writeln(res);
}
Output of res should look like : "Test1", "Test2" (Without []
brackets).
From,
Vino.B
https://dlang.org/phobos/std_format is your friend:
// https://run.dlang.io/is/sUkOX0
import std.container;
import std.format;
import std.stdio;
void main()
{
auto test = Array!string("Test1", "Test2");
writefln("%(%s, %)",test[]);
// Similar like this
auto res = "%(%s, %)".format(test[]);
writeln(res);
auto res2 = "%-(%s, %)".format(test[]);
writeln(res2);
}
Re: Python and D (PyD)
On Wednesday, 29 November 2017 at 06:34:53 UTC, Fat_Umpalumpa wrote: Hello, I have searched these forums a bit to see if it is possible to use python libraries such as matplotlib which I have enough experience with, and wish to continue using this wonderful library within D. Maybe there are great D graphing libraries, but I have zero experience with them. I cam across PyD and found an example from "Welcome to Quick Start with D!" http://d.readthedocs.io/en/latest/examples.html#plotting-with-matplotlib-python I have tried to understand the example here and thoroughly as possible, to the point of downloading the Github example https://github.com/andralex/thenextafterc/tree/master/examples/matplotlib When I try to compile the app.d script with dmd I get the following error app.d(1): Error: module pyd is in file 'pyd/pyd.d' which cannot be read import path[0] = /Library/D/dmd/src/phobos import path[1] = /Library/D/dmd/src/druntime/import I have tried to install PyD with pip and installed version 0.10 which I think is the same as https://pypi.python.org/pypi/pyd But according to dlang https://code.dlang.org/packages/pyd only up to version 0.9.9 is supported? you need to tell the compiler where to look to find pyd (which it can't find in '/Library/D/dmd/src/phobos' or '/Library/D/dmd/src/druntime/import'). If you are invoking the compiler yourself use the `-I` switch (`-Ipath/to/pyd`). Or if you are using dub (I recommend this) make sure that is is in your list of dependencies.
Storing Formatted Array Value
Hi All,
Request your help, with the below code I am able to print the
value of the array without brackects , but can some on help me on
hot to store this output to a variable
Program:
import std.stdio;
import std.container;
void main()
{
auto test = Array!string("Test1", "Test2");
writefln("%(%s, %)",test[]); // output : "Test1", "Test2"
// Similar like this
auto res = `writefln("%(%s, %)",test[])`;
writeln(res);
}
Output of res should look like : "Test1", "Test2" (Without []
brackets).
From,
Vino.B
Re: Email validation
On Wednesday, 29 November 2017 at 05:22:34 UTC, Dmitry wrote:
On Wednesday, 29 November 2017 at 03:49:56 UTC, codephantom
wrote:
string domainRequired = "@hotmail.com";
string emailAddress = "vino.bhee...@hotmail.com";
emailAddress.endsWith(domainRequired) ? writeln("domain
ok")
: writeln("invalid domain");
Also you need check that only one @ used.
Hi All,
Thank you, the above code worked.
From,
Vino.B
Python and D (PyD)
Hello, I have searched these forums a bit to see if it is possible to use python libraries such as matplotlib which I have enough experience with, and wish to continue using this wonderful library within D. Maybe there are great D graphing libraries, but I have zero experience with them. I cam across PyD and found an example from "Welcome to Quick Start with D!" http://d.readthedocs.io/en/latest/examples.html#plotting-with-matplotlib-python I have tried to understand the example here and thoroughly as possible, to the point of downloading the Github example https://github.com/andralex/thenextafterc/tree/master/examples/matplotlib When I try to compile the app.d script with dmd I get the following error app.d(1): Error: module pyd is in file 'pyd/pyd.d' which cannot be read import path[0] = /Library/D/dmd/src/phobos import path[1] = /Library/D/dmd/src/druntime/import I have tried to install PyD with pip and installed version 0.10 which I think is the same as https://pypi.python.org/pypi/pyd But according to dlang https://code.dlang.org/packages/pyd only up to version 0.9.9 is supported?
Strange error when compiling with dmd, not with ldc
I have this struct:
immutable struct Configuration {
string title;
string baseurl;
string url;
string email;
string author;
string parser;
string target;
string urlFormat;
string urlFormatCmd;
short port;
string[] ignore;
string[] extensions;
@property string toString()
{
auto urlF = (urlFormatCmd ? "url_format_cmd: " ~
urlFormatCmd : "") ~ "\n";
return
"title: "~ title ~ "\n" ~
"baseurl: " ~ baseurl ~ "\n" ~
"url: " ~ url ~ "\n" ~
"email: "~ email ~ "\n" ~
"author: " ~ author ~ "\n" ~
"parser: " ~ parser ~ "\n" ~
"target: " ~ target ~ "\n" ~
"url_format: " ~ urlFormat ~ "\n" ~
"ignore: " ~ to!string(ignore)[1 .. $ - 1] ~ "\n" ~
"extensions: " ~ to!string(extensions)[1 .. $ - 1] ~
"\n" ~
urlF;
}
}
and this function:
void show_config()
{
writef("%s", parse_config(
exists("config.sdl") ? "config.sdl" :
"").toString);
}
Whenever I compile with ldc2 I get no errors, while with dmd I
get:
source/configuration.d(105,27): Error: immutable method
configuration.Configuration.toString is not callable using a
mutable object
What is the problem?
Re: Web servers in D
On 29/11/2017 5:51 AM, Hasen Judy wrote: On Tuesday, 12 September 2017 at 12:34:26 UTC, aberba wrote: On Friday, 25 August 2017 at 05:25:09 UTC, Hasen Judy wrote: What libraries are people using to run webservers other than vibe.d? Don't get me wrong I like the async-io aspect of vibe.d but I don't like the weird template language and the fact that it caters to mongo crowd. I think for D to a have good web story it needs to appeal to serious backend developers, not hipsters who go after fads (mongodb is a fad, jade/haml is a fad). I probably need to combine several libraries, but the features I'm looking for are: - Spawn an HTTP server listening on a port, and routing requests to functions/delegates, without hiding the details of the http request/response objects (headers, cookies, etc). - Support for websockets - Runs delegates in fibers/coroutines - Basic database connectivity (No "orm" needed; just raw sql). - When iterating the result set of a sql query, has the ability to automatically map each row against a struct, and throw if the structure does not match. - More generally, map any arbitrary object (such as json) to a struct. Something like Zewo/Reflection package for swift[0]. [0]: https://github.com/Zewo/Reflection I feel like Vibe.d satisfies my first 3 requirements, but for the rest I will probably have to look for something else. In 2017, backend developers are more likely to write microservices which expose rest/graphQL APIs and put them in dockers containers Unless you're a full stack developer, you'll not be using jade/diet (at least not enough to be tempted to use something else). Its still sucks there's no object storage api for D. Are you guys still building monolithic web servers? Sorry this is an incredibly late response. Come on now, in CURRENT_YEAR people are jumping and this year's fad train. I don't want to jump along, thank you very much. And I don't understand this containers business. As far as I can tell it was designed for interpreted languages because they tend to have a lot of very specific dependences that are a hell to manage. If the compiler can produce a statically linked binary, then there's no problem that a container would solve here. Containers are an "easy" way to push your full system over to another's servers. It is all about cost. They are cheaper than VM's as they require less resources to manage and use.
Re: Web servers in D
On Tuesday, 12 September 2017 at 12:34:26 UTC, aberba wrote: On Friday, 25 August 2017 at 05:25:09 UTC, Hasen Judy wrote: What libraries are people using to run webservers other than vibe.d? Don't get me wrong I like the async-io aspect of vibe.d but I don't like the weird template language and the fact that it caters to mongo crowd. I think for D to a have good web story it needs to appeal to serious backend developers, not hipsters who go after fads (mongodb is a fad, jade/haml is a fad). I probably need to combine several libraries, but the features I'm looking for are: - Spawn an HTTP server listening on a port, and routing requests to functions/delegates, without hiding the details of the http request/response objects (headers, cookies, etc). - Support for websockets - Runs delegates in fibers/coroutines - Basic database connectivity (No "orm" needed; just raw sql). - When iterating the result set of a sql query, has the ability to automatically map each row against a struct, and throw if the structure does not match. - More generally, map any arbitrary object (such as json) to a struct. Something like Zewo/Reflection package for swift[0]. [0]: https://github.com/Zewo/Reflection I feel like Vibe.d satisfies my first 3 requirements, but for the rest I will probably have to look for something else. In 2017, backend developers are more likely to write microservices which expose rest/graphQL APIs and put them in dockers containers Unless you're a full stack developer, you'll not be using jade/diet (at least not enough to be tempted to use something else). Its still sucks there's no object storage api for D. Are you guys still building monolithic web servers? Sorry this is an incredibly late response. Come on now, in CURRENT_YEAR people are jumping and this year's fad train. I don't want to jump along, thank you very much. And I don't understand this containers business. As far as I can tell it was designed for interpreted languages because they tend to have a lot of very specific dependences that are a hell to manage. If the compiler can produce a statically linked binary, then there's no problem that a container would solve here.
Re: Email validation
On Wednesday, 29 November 2017 at 03:49:56 UTC, codephantom wrote:
string domainRequired = "@hotmail.com";
string emailAddress = "vino.bhee...@hotmail.com";
emailAddress.endsWith(domainRequired) ? writeln("domain ok")
: writeln("invalid domain");
Also you need check that only one @ used.
Re: Email validation
On Tuesday, 28 November 2017 at 18:47:06 UTC, Vino wrote:
Hi All,
Can you please provide me some example on who to validate an
email address as the document dose not have an example for the
same
Ex: vino.bhee...@hotmail.com
Conditions :
The domain should contain only "hotmail.com"
The email address should contain the symbol "@"
From,
Vino.B
Here's another nice option I just found.
Interestingly, I had to disable Avast antivirus, otherwise when I
compile it, Avast thinks the exectuable is 'suspicous' and
prevents any further access to it...wtf?
// -
module test;
import std.stdio;
import std.algorithm;
/+
CONDITIONS:
- The domain should contain only "hotmail.com"
- The email address should contain the symbol "@"
+/
void main()
{
string domainRequired = "@hotmail.com";
string emailAddress = "vino.bhee...@hotmail.com";
emailAddress.endsWith(domainRequired) ? writeln("domain ok")
: writeln("invalid domain");
}
//
Re: Email validation
On Tuesday, 28 November 2017 at 22:42:27 UTC, Mike Wey wrote: isMail only checks the formatting of the email address and optionally if the domain has a MX record. I don't believe MX validation (checkDns) is implemented yet.
Re: Email validation
On Tuesday, 28 November 2017 at 18:47:06 UTC, Vino wrote:
Hi All,
Can you please provide me some example on who to validate an
email address as the document dose not have an example for the
same
Ex: vino.bhee...@hotmail.com
Conditions :
The domain should contain only "hotmail.com"
The email address should contain the symbol "@"
From,
Vino.B
test/improve it yourself. but you get the idea
// --
module test;
import std.stdio;
import std.algorithm;
/+
CONDITIONS:
- The domain should contain only "hotmail.com"
- The email address should contain the symbol "@"
+/
void main()
{
string domainRequired = "hotmail.com";
string emailAddress = "vino.bhee...@hotmail.com";
auto checkDomain = findSplitAfter(emailAddress, "@"); //
requires import std.algorithm
//writeln(checkDomain); // Tuple!(string,
string)("vino.bheeman@", "hotmail.com")
if (checkDomain[1] == domainRequired)
writeln("domain ok");
else
writeln("invalid domain");
}
// --
Re: Floating point types default to NaN?
On Wednesday, 29 November 2017 at 01:25:47 UTC, Michael V. Franklin wrote: On Wednesday, 29 November 2017 at 01:24:21 UTC, A Guy With a Question wrote: I was just more curious of the design decisions that were made. So am I. I'm trying to get to the heart of in the the PR comments. Mike That's a lot less code than I would have thought to implement that. The comment about phobos was a good one. Just reading through it.
Re: Floating point types default to NaN?
On Wednesday, 29 November 2017 at 01:24:21 UTC, A Guy With a Question wrote: I was just more curious of the design decisions that were made. So am I. I'm trying to get to the heart of in the the PR comments. Mike
Re: Floating point types default to NaN?
On Tuesday, 28 November 2017 at 20:00:53 UTC, Michael V. Franklin wrote: On Monday, 27 November 2017 at 23:05:55 UTC, Michael V. Franklin wrote: I think I'm going to implement a feature gate to require explicit initialization. It would be better to be strict up front and relax it as flow control analysis becomes more mature. Well, I implemented it (https://github.com/dlang/dmd/pull/7375), but it's off to a pretty rocky start. Mike To be honest, I didn't actually expect anyone to act on my question. :D I was just more curious of the design decisions that were made.
Re: Really? -- Error: function `object.Throwable.message` is not nothrow
On Wednesday, 29 November 2017 at 00:52:41 UTC, A Guy With a Question wrote: .msg worked. I will let you all live. Thanks!
Re: Really? -- Error: function `object.Throwable.message` is not nothrow
.msg worked. I will let you all live.
Re: Really? -- Error: function `object.Throwable.message` is not nothrow
On Tuesday, November 28, 2017 23:48:06 Adam D. Ruppe via Digitalmars-d-learn wrote: > On Tuesday, 28 November 2017 at 23:41:28 UTC, A Guy With a > > Question wrote: > > What's the clean way to extract the message that passes the > > nothrow argument? Do I really have to embed another try catch? > > I didn't even know it had a `message`... you should be able to > pull the `.msg` member directly though, which is a simple string > and not a function at all. > > http://dpldocs.info/experimental-docs/object.Throwable.html I think that message was added recently for the folks at Sociomantic, because they want to be able to reuse buffers for exception messages rather than passing them as string like is normally done. So, they can override message to provide the message instead of using msg. I have no idea why it wouldn't be nothrow though. That was probably an oversight. Regardless, if you're not doing anything with overriding message in your own code, then using msg should work just fine. - Jonathan M Davis
Re: Really? -- Error: function `object.Throwable.message` is not nothrow
On Tuesday, 28 November 2017 at 23:41:28 UTC, A Guy With a Question wrote: What's the clean way to extract the message that passes the nothrow argument? Do I really have to embed another try catch? I didn't even know it had a `message`... you should be able to pull the `.msg` member directly though, which is a simple string and not a function at all. http://dpldocs.info/experimental-docs/object.Throwable.html
Really? -- Error: function `object.Throwable.message` is not nothrow
What's the clean way to extract the message that passes the nothrow argument? Do I really have to embed another try catch?
Re: Email validation
On Tuesday, 28 November 2017 at 19:32:40 UTC, Vino wrote: Can you provide me a example, as the link does not have any examples. From, Vino.B btw... yes documentation is an acknowledged issue with regards to phobos...but..that aside...it can also be useful (and wise) to look at the unit tests in the source code. I'm not sure that simply calling something you don't know anything about is such a good idea these days ;-) ...fortunately, we have access to the source - which gets installed with dmd. or you can find it on github. https://github.com/dlang/phobos
Re: Email validation
On 28-11-17 20:32, Vino wrote:
On Tuesday, 28 November 2017 at 18:51:50 UTC, Rene Zwanenburg wrote:
On Tuesday, 28 November 2017 at 18:47:06 UTC, Vino wrote:
Hi All,
You can do this easily using the std.net.isemail module:
https://dlang.org/phobos/std_net_isemail.html
Hi Rene,
Can you provide me a example, as the link does not have any examples.
From,
Vino.B
isEmail returns a struct with the status of the check.
You can use the valid and domainPart to check if it's a valid email
address for the hotmail domain.
isMail only checks the formatting of the email address and optionally if
the domain has a MX record.
```
auto e = isEmail("vino.bhee...@hotmail.com");
if ( e.valid && e.domainPart == "hotmail.com" )
...
```
--
Mike Wey
Re: Floating point types default to NaN?
On Monday, 27 November 2017 at 23:05:55 UTC, Michael V. Franklin wrote: I think I'm going to implement a feature gate to require explicit initialization. It would be better to be strict up front and relax it as flow control analysis becomes more mature. Well, I implemented it (https://github.com/dlang/dmd/pull/7375), but it's off to a pretty rocky start. Mike
Re: Email validation
On Tuesday, 28 November 2017 at 18:51:50 UTC, Rene Zwanenburg wrote: On Tuesday, 28 November 2017 at 18:47:06 UTC, Vino wrote: Hi All, You can do this easily using the std.net.isemail module: https://dlang.org/phobos/std_net_isemail.html Hi Rene, Can you provide me a example, as the link does not have any examples. From, Vino.B
Problems with ctRegex
First problem: it doesn't understand enums, it seems to be a bug:
```
enum TopicMask : string
{
divider = "/",
oneLevelMask = "+",
multiLevelMask = "#",
system = "$",
level = "[^"~divider~oneLevelMask~multiLevelMask~"]*",
publishMask = "^("~divider~"|"~level~")+$"
}
bool topicIsValid(string topic) pure
{
import std.regex;
auto mask = ctRegex!(TopicMask.publishMask);
return !topic.matchFirst(mask).empty;
}
```
result:
/usr/include/dmd/phobos/std/regex/package.d(376,20): Error:
template std.array.Appender!(TopicMask).Appender.put cannot
deduce function from argument types !()(TopicMask), candidates
are:
/usr/include/dmd/phobos/std/array.d(2983,10):
std.array.Appender!(TopicMask).Appender.put(U)(U item) if
(canPutItem!U)
/usr/include/dmd/phobos/std/array.d(3011,10):
std.array.Appender!(TopicMask).Appender.put(Range)(Range items)
if (canPutConstRange!Range)
/usr/include/dmd/phobos/std/array.d(3020,10):
std.array.Appender!(TopicMask).Appender.put(Range)(Range items)
if (canPutRange!Range)
/usr/include/dmd/phobos/std/regex/package.d(387,15): Error:
cannot implicitly convert expression `app.data()` of type
`string` to `TopicMask`
/usr/include/dmd/phobos/std/regex/package.d(422,19): Error:
template instance std.regex.internal.parser.Parser!(TopicMask,
CodeGen) does not match template declaration Parser(R, Generator)
if (isForwardRange!R && is(ElementType!R : dchar))
/usr/include/dmd/phobos/std/regex/package.d(393,25): Error:
template instance std.regex.regexImpl!(TopicMask) error
instantiating
/usr/include/dmd/phobos/std/regex/package.d(401,17):
instantiated from here: regex!(TopicMask)
/usr/include/dmd/phobos/std/regex/package.d(431,19):
instantiated from here: regex!(TopicMask)
/usr/include/dmd/phobos/std/regex/package.d(453,54):
instantiated from here: ctRegexImpl!("^(/|[^/+#]*)+$", [])
source/mqttd/topic.d(48,14):instantiated from here:
ctRegex!("^(/|[^/+#]*)+$", [])
If I change ctRegex!(TopicMask.publishMask) to
ctRegex!("^(/|[^/+#]*)+$") I run into next error:
source/mqttd/topic.d(48,26): Error: pure function
'mqttd.topic.topicIsValid' cannot call impure function
'std.regex.matchFirst!(string, StaticRegex!char).matchFirst'
source/mqttd/topic.d(48,26): Error: pure function
'mqttd.topic.topicIsValid' cannot call impure destructor
'std.regex.Captures!(string, ulong).Captures.~this'
Is there any change to use regex inside or pure function? I just
need some pure bool test() method to test string against the mask.
Re: Email validation
On Tuesday, 28 November 2017 at 18:47:06 UTC, Vino wrote: Hi All, You can do this easily using the std.net.isemail module: https://dlang.org/phobos/std_net_isemail.html
Email validation
Hi All, Can you please provide me some example on who to validate an email address as the document dose not have an example for the same Ex: vino.bhee...@hotmail.com Conditions : The domain should contain only "hotmail.com" The email address should contain the symbol "@" From, Vino.B
Re: Reading a File
On Tuesday, 28 November 2017 at 18:34:51 UTC, Steven
Schveighoffer wrote:
On 11/28/17 1:10 PM, Vino wrote:
Hi All,
Need your help, I have file which contains 3 lines, I need
to ignore the line's which does not have the sign "=", in the
blow example the 3rd line(FileName2) and store the result in
a array, I was able to ignore the line which contains '#" and
empty lines , but need to help on how to filter the lines
which does not have the sign "=".
string ConfigFile = Test.txt
#This is a Sample File
FileName1 = test1.txt
FileName2
auto PLines =
Array!string(File(ConfigFile).byLineCopy().filter!(line =>
!line.all!isWhite && line[0].isAlpha));
&& line.canFind("=")
https://dlang.org/phobos/std_algorithm_searching.html#.canFind
-Steve
Hi Steve,
Thank you very much.
From,
Vino.B
Re: Reading a File
On 11/28/17 1:10 PM, Vino wrote:
Hi All,
Need your help, I have file which contains 3 lines, I need to ignore
the line's which does not have the sign "=", in the blow example the
3rd line(FileName2) and store the result in a array, I was able to
ignore the line which contains '#" and empty lines , but need to help on
how to filter the lines which does not have the sign "=".
string ConfigFile = Test.txt
#This is a Sample File
FileName1 = test1.txt
FileName2
auto PLines = Array!string(File(ConfigFile).byLineCopy().filter!(line =>
!line.all!isWhite && line[0].isAlpha));
&& line.canFind("=")
https://dlang.org/phobos/std_algorithm_searching.html#.canFind
-Steve
Reading a File
Hi All, Need your help, I have file which contains 3 lines, I need to ignore the line's which does not have the sign "=", in the blow example the 3rd line(FileName2) and store the result in a array, I was able to ignore the line which contains '#" and empty lines , but need to help on how to filter the lines which does not have the sign "=". string ConfigFile = Test.txt #This is a Sample File FileName1 = test1.txt FileName2 auto PLines = Array!string(File(ConfigFile).byLineCopy().filter!(line => !line.all!isWhite && line[0].isAlpha)); From, Vino.B
Re: R.filter!(..).sort!(..)
On Tuesday, 28 November 2017 at 14:04:40 UTC, Steven Schveighoffer wrote: Would be an awesome project to add to D. Oh yes, it sounds yummy..
Re: Basic questions about D lang?
On 11/28/2017 05:51 AM, Jayam wrote: > Can we compile our program to multi platform? Most definitely! D is great in multi-threaded programming. (I hope that was the question. :) ) Ali
Re: Basic questions about D lang?
On 11/28/17 8:52 AM, Jayam wrote: On Tuesday, 28 November 2017 at 13:42:05 UTC, Stefan Koch wrote: On Tuesday, 28 November 2017 at 13:39:11 UTC, Jayam wrote: Is D language open source? Do this have GUI Desktop application support ? Do this have web api support ? Can we compile our program to multi program ? yes yes some (dlang-ui for example) yes some (vibe.d or arsd) I don't know what you mean with that Thanks. Can we compile our program to multi platform? D supports several platforms: https://wiki.dlang.org/Compilers -Steve
Re: R.filter!(..).sort!(..)
On 11/28/17 8:57 AM, Arjan wrote: 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. Well I would have liked an error msg something like: isRandomAccessRange!Range for Range=.. failed! Or unable to sort!() a lazy Range. Sure, the error messages could be more specific about WHY it's failing. This has been discussed many times, but no action has been taken. Would be an awesome project to add to D. -Steve
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.
Re: Basic questions about D lang?
On Tuesday, 28 November 2017 at 13:42:05 UTC, Stefan Koch wrote: On Tuesday, 28 November 2017 at 13:39:11 UTC, Jayam wrote: Is D language open source? Do this have GUI Desktop application support ? Do this have web api support ? Can we compile our program to multi program ? yes yes some (dlang-ui for example) yes some (vibe.d or arsd) I don't know what you mean with that Thanks. Can we compile our program to multi platform?
Re: Basic questions about D lang?
On Tuesday, 28 November 2017 at 13:42:08 UTC, rikki cattermole wrote: On 28/11/2017 1:39 PM, Jayam wrote: Is D language open source? Yes 100% Do this have GUI Desktop application support ? Sure but probably not to the level you expect. Do this have web api support ? Ugh what? Be more specific. Can we compile our program to multi program ? Okay that definitely makes no sense. Do you mean can we cross compile to other architectures other than the host? Thanks. Can we compile our program to multi platform?
Re: Basic questions about D lang?
On 28/11/2017 1:39 PM, Jayam wrote: Is D language open source? Yes 100% Do this have GUI Desktop application support ? Sure but probably not to the level you expect. Do this have web api support ? Ugh what? Be more specific. Can we compile our program to multi program ? Okay that definitely makes no sense. Do you mean can we cross compile to other architectures other than the host?
Re: Basic questions about D lang?
On Tuesday, 28 November 2017 at 13:39:11 UTC, Jayam wrote: Is D language open source? Do this have GUI Desktop application support ? Do this have web api support ? Can we compile our program to multi program ? yes yes some (dlang-ui for example) yes some (vibe.d or arsd) I don't know what you mean with that
Basic questions about D lang?
Is D language open source? Do this have GUI Desktop application support ? Do this have web api support ? Can we compile our program to multi program ?
Re: R.filter!(..).sort!(..)
On 11/28/17 8:10 AM, Arjan wrote: 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? 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
Re: R.filter!(..).sort!(..)
On Tuesday, 28 November 2017 at 13:10:15 UTC, Arjan wrote: Iaw is the compiler error msg wrong? Or i'm I wrong? filter isn't random access because it doesn't even know how many elements are in there, much less where they are, until it loops through and does the comparisons to know which items pass the filter. The .array call will buffer it and also evaluate how many items are actually still there after the filter, and sort uses that buffer too.
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: D program in Windows Task Scheduler.
On Tue, 28 Nov 2017 09:44:39 +, Vino wrote: > Hi All, > > I have small D program which run's perfectly when i run it > manually, but when I schedule the same via windows task scheduler and > choose the option "Run whether user is logged on or not" the program > does not execute, the task scheduler job log return code > 4294967295(Invalid argument). SO request you help on this. You're not using getopt in the sample; if you comment that line out, do you still have the problem? How are you passing arguments in Task Scheduler? You should be using the textbox for arguments, not the same one the application is passed in. Program/script: test.exe Add arguments: dryrun, run If that's correct, create a batch file that takes no arguments and calls your application and try running the batch file via Task Scheduler. If that fails, the application is probably trying to do something it doesn't have permission to do. If it succeeds, the task command is probably not set up correctly. --Ryan
Re: Tried C++ to D. Wrong result.
On Tuesday, 28 November 2017 at 09:01:47 UTC, Temtaime wrote: https://pastebin.com/xJXPBh0n Converted it and it works as expected. What did you use for it? In future I'll be needed to convert some more C++ code. P.S. /And it works wrong, because uses unsafe pointer (ubyte *image). So, it takes wrong values (Blue of the next pixel instead of Alpha of the current pixel). Same with original code./ P.P.S. Anyway, I already found all things I did wrong. But also I found in your code that there is `swap` function, didn't know it. Thank you!
D program in Windows Task Scheduler.
Hi All,
I have small D program which run's perfectly when i run it
manually, but when I schedule the same via windows task scheduler
and choose the option "Run whether user is logged on or not" the
program does not execute, the task scheduler job log return code
4294967295(Invalid argument). SO request you help on this.
Execution Steps
test.exe
Option: run , dryrun ,help
Example Execution : test.exe dryrun
Program:
import std.stdio;
import std.getopt;
import std.path;
import core.stdc.stdlib: exit;
void Test1(string Step) {
writeln("This is Test1 :", Step);
}
void Test2() {
writeln("This is Test2");
}
void Test3() {
writeln("This is Help");
}
void main (string[] args) {
if (args.length <= 1 || args.length > 2 ) { writeln("No Arguments
Provided"); exit(-1); }
string op = args[1];
try {
getopt(args, std.getopt.config.caseInsensitive,
std.getopt.config.stopOnFirstNonOption);
switch (op) {
case "dryrun" , "run" :
auto Step = op;
Test1(Step);
Test2;
break;
case "help" :
Test3;
break;
default :
writefln("Unknown operation");
}
} catch (Exception exc)
{ writefln("Error processing command line arguments: %s",
exc.msg);}
}
From,
Vino.B
Re: Tried C++ to D. Wrong result.
On Tuesday, 28 November 2017 at 06:46:18 UTC, Dmitry wrote: On Monday, 27 November 2017 at 19:01:28 UTC, Ali Çehreli wrote: P.S. I think you have an unnecessary 'ref' on the D version because a slice is already a reference to elements: Fixed, thank you. https://pastebin.com/xJXPBh0n Converted it and it works as expected.
