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  • DBD::CSV: Problem with file-name-extensions

    - by sid_com
    In this script I have problems with file-name-extensions: if I use /home/mm/test_x it works, with file named /home/mm/test_x.csv it doesn't: #!/usr/bin/env perl use warnings; use strict; use 5.012; use DBI; my $table_1 = '/home/mm/test_1.csv'; my $table_2 = '/home/mm/test_2.csv'; #$table_1 = '/home/mm/test_1'; #$table_2 = '/home/mm/test_2'; my $dbh = DBI->connect( "DBI:CSV:" ); $dbh->{RaiseError} = 1; $table_1 = $dbh->quote_identifier( $table_1 ); $table_2 = $dbh->quote_identifier( $table_2 ); my $sth = $dbh->prepare( "SELECT a.id, a.name, b.city FROM $table_1 AS a NATURAL JOIN $table_2 AS b" ); $sth->execute; $sth->dump_results; $dbh->disconnect; Output with file-name-extention: DBD::CSV::st execute failed: Execution ERROR: No such column '"/home/mm/test_1.csv".id' called from /usr/local/lib/perl5/site_perl/5.12.0/x86_64-linux/DBD/File.pm at 570. Output without file-name-extension: '1', 'Brown', 'Laramie' '2', 'Smith', 'Watertown' 2 rows Is this a bug?

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  • Using Pylint with Django

    - by rcreswick
    I would very much like to integrate pylint into the build process for my python projects, but I have run into one show-stopper: One of the error types that I find extremely useful--:E1101: *%s %r has no %r member*--constantly reports errors when using common django fields, for example: E1101:125:get_user_tags: Class 'Tag' has no 'objects' member which is caused by this code: def get_user_tags(username): """ Gets all the tags that username has used. Returns a query set. """ return Tag.objects.filter( ## This line triggers the error. tagownership__users__username__exact=username).distinct() # Here is the Tag class, models.Model is provided by Django: class Tag(models.Model): """ Model for user-defined strings that help categorize Events on on a per-user basis. """ name = models.CharField(max_length=500, null=False, unique=True) def __unicode__(self): return self.name How can I tune Pylint to properly take fields such as objects into account? (I've also looked into the Django source, and I have been unable to find the implementation of objects, so I suspect it is not "just" a class field. On the other hand, I'm fairly new to python, so I may very well have overlooked something.) Edit: The only way I've found to tell pylint to not warn about these warnings is by blocking all errors of the type (E1101) which is not an acceptable solution, since that is (in my opinion) an extremely useful error. If there is another way, without augmenting the pylint source, please point me to specifics :) See here for a summary of the problems I've had with pychecker and pyflakes -- they've proven to be far to unstable for general use. (In pychecker's case, the crashes originated in the pychecker code -- not source it was loading/invoking.)

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  • How to use Preprocessor directives in MVC aspx pages

    - by Zuber
    I am using MinifyJS.tt which is a T4 template to minify all my JS files automatically. In my aspx files, I am referencing all the javascript files. Now, I want to add a condition (maybe compiler directive) to use the original JS file when I am debugging the application, and to use the minified JS files when I simply run the application without debug. I tried using #if in the aspx page, but that did not seem to work. Can we make use of preprocessor directives in aspx pages? Is there an alternative way to achieve my goal?

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  • Reliable portability for C code without relying on the preprocessor

    - by Yktula
    Relying on the preprocessor and predefined compiler macros for achieving portability seems hard to manage. What's a better way to achieve portability for a C project? I want to put environment-specific code in headers that behave the same way. Is there a way to have the build environment choose which headers to include? I was thinking that I'd put the environment-specific headers into directories for specific environments. The build environment would then just copy the headers from the platform's directory into the root directory, build the project, and then remove the copies.

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  • Finding C++ static initialization order problems

    - by Fred Larson
    We've run into some problems with the static initialization order fiasco, and I'm looking for ways to comb through a whole lot of code to find possible occurrences. Any suggestions on how to do this efficiently? Edit: I'm getting some good answers on how to SOLVE the static initialization order problem, but that's not really my question. I'd like to know how to FIND objects that are subject to this problem. Evan's answer seems to be the best so far in this regard; I don't think we can use valgrind, but we may have memory analysis tools that could perform a similar function. That would catch problems only where the initialization order is wrong for a given build, and the order can change with each build. Perhaps there's a static analysis tool that would catch this. Our platform is IBM XLC/C++ compiler running on AIX.

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  • Help me avoid a resonance cascade.

    - by SLC
    Hi, my name is Dr. Kleiner, and I'm a senior scientist working at the Black Mesa Research Facility. I've just finished compiling my code to analyse a large unknown sample we've come across. Unfortunately, there were 19 build errors and 42 warnings, but I've been told the experiment must go ahead. Time is critical, we've already got one of our newest employees who is suiting up as I type this to complete the experiment. I really need some help. Can you think of anything last minute to stop a potential resonance cascade? Someone has hidden my glasses again... Anyway, I hope I never see a resonance cascade, and definitely don't want to create one. It's my lunch break in 5 minutes, and my casserole is already in the microwave ready. Please, give me some advice. If it helps I wrote all of the code to analyse the sample and activate the sampler machine in BASIC. Edit: Oh god! They're everywhere! Send assista

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  • Why do my MIPS crosscompiler works like this for NOT operation?

    - by Mazicky
    Hello, I setup my crosscompiler for making MIPS instructions. And it compiles C code well. but I found a weird thing for NOT operations. if i make code like int a; func(!a); and i studied MIPS instructions with text book that says "MIPS converts NOT operation to 'nor with zero'" So i thought it would converted like nor a a $zero but my compiler converts xori a a 0x0 sltu a 1 /////////////////////////////////////// i compiled the code with 'myaccount mipsel-unknown-linux-gnu-gcc -S myfilename.c' and it makes myfilename.s file.. what am i missing??

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  • how to compile a program with gtkmozembed.h

    - by ganapati hegde
    Hi, i have written a program under ubuntu, in which i include gtkmozembed.h. I am facing a problem in compiling the program.Below is the simplest form of a program which uses gtkmozembed. #include <gtk/gtk.h> #include <stdio.h> #include <gtkmozembed.h> int main(){ GtkWidget *mozEmbed; mozEmbed = gtk_moz_embed_new(); return 0; } Eventhough, the above program is doing nothing, compiling that program is a lot for me... I am trying to comile the above program like below gcc `pkg-config --libs --cflags gtk+-2.0` test.c -o test and it is giving the following error... error: gtkmozembed.h: No such file or directory I can understand, something else has to be added to the above gcc line,so that the compiler can find the gtkmozembed.h, but not getting what is that, 'something'...Looking for someone's help..Thank you...

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  • Question about member function pointers in a heirarchy

    - by Jesse Beder
    I'm using a library that defines an interface: template<class desttype> void connect(desttype* pclass, void (desttype::*pmemfun)()); and I have a small heirarchy class base { void foo(); }; class derived: public base { ... }; In a member function of derived, I want to call connect(this, &derived::foo); but it seems that &derived::foo is actually a member function pointer of base; gcc spits out error: no matching function for call to ‘connect(derived* const&, void (base::* const&)())’ I can get around this by explicitly casting this to base *; but why can't the compiler match the call with desttype = base (since derived * can be implicitly cast to base *)? Also, why is &derived::foo not a member function pointer of derived?

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  • Ambiguous Generic restriction T:class vs T:struct

    - by Maslow
    This code generates a compiler error that the member is already defined with the same parameter types. private T GetProperty<T>(Func<Settings, T> GetFunc) where T:class { try { return GetFunc(Properties.Settings.Default); } catch (Exception exception) { SettingReadException(this,exception); return null; } } private TNullable? GetProperty<TNullable>(Func<Settings, TNullable> GetFunc) where TNullable : struct { try { return GetFunc(Properties.Settings.Default); } catch (Exception ex) { SettingReadException(this, ex); return new Nullable<TNullable>(); } } Is there a clean work around?

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  • How do I get the XAML comiler to use textual content property on custom classes?

    - by Duncan
    Given a simple C# class definition like: [System.Windows.Markup.ContentProperty("PropertyOne")] public class SimpleBase { public string PropertyOne { get; set; } public string PropertyTwo { get; set; } } why is it not possible to ommit the sys:string tags around the word Test in the xaml below. <custom:SimpleBase x:Class="TestType" xmlns:custom="clr-namespace:ConsoleApplication1;assembly=" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:sys="clr-namespace:System;assembly=mscorlib"> <sys:String>Test</sys:String> </custom:SimpleBase> Somehow the compiler correctly coverts text to string for the type String, why doesn't it work for my custom type? The context can be found on my blog: http://www.deconflations.com/?tag=xaml

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  • Using typedefs from a template class in a template (non-member) function

    - by atomicpirate
    The following fails to compile (with gcc 4.2.1 on Linux, anyway): template< typename T > class Foo { public: typedef int FooType; }; void ordinary() { Foo< int >::FooType bar = 0; } template< typename T > void templated() { Foo< T >::FooType bar = T( 0 ); } int main( int argc, char **argv ) { return 0; } The problem is with this line: Foo< T >::FooType bar = 0; ...and the compiler makes this complaint: foo.c: In function ‘void templated()’: foo.c:22: error: expected `;' before ‘bar’ Normally one sees this when a type hasn't been declared, but as far as I can tell, Foo< T ::FooType should be perfectly valid inside templated().

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  • New asp "showat" attribute required inconsistently in VS2010. Why?

    - by Patrick Karcher
    When I generate code using T4 templates in Visual Studio 2010, I get the following error for each of my asp controls when I try to compile: Control "ddState" is missing required attribute "showat". I have never gotten this error in previous versions of .NET. Further, I don't get this error when I manually construct my pages either by dragging/dropping, nor do I get it when I type out the control text myself. When I generate code, I have to manually add showat="client" to my tag for the compiler to be happy. It was my understanding that I never had to explicitly specify this tag. The following: <asp:dropdownlist id="ddState" runat="server" showat="client" /> solves the problem. Why do I have to add this to generated code but not other times? (It's a VS-2010 webforms project, using VB, in case that makes a difference.)

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  • When using the getInstance() method of the abstract java.text.NumberFormat class, what is the actual

    - by iamchuckb
    This question expands upon the one at abstract-class-numberformat-very-confused-about-getinstance. I feel that this question is different enough to merit being asked on its own. In the answers to that question, it was stated that a code statement such as NumberFormat en = NumberFormat.getInstance(Locale.US); returns an object that is a subclass of the java.text.NumberFormat class. It makes sense to me why the return type can't be just an instance of NumberFormat since that is an abstract class. Rather, it was stated that the returned object is at least an instance of NumberFormat, but actually something else. My question is this: what specifically is the class of the object that is returned? In the Sun documentation the only subclasses I see are ChoicesFormat and DecimalFormat. Is there some sort of behind the scenes compiler voodoo going on here? Thanks in advance!

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  • v8 is too slow for my purpose

    - by Scott
    I'm working on a music visualization plugin for libvisual. It's an AVS clone -- AVS being from Winamp. Right now I have a superscope plugin. This element has 4 scripts, and "point" is run at every pixel. You can imagine that it has to be rather fast. The original libvisual avs clone had a JIT compiler that was really fast, but it had some bugs and wasn't fully implemented, so I decided to try v8. Well, v8 is too slow running the compiled script at every pixel. Is there any other script engine that would be pretty fast for this purpose?

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  • Thread Proc for an instancable class?

    - by user146780
    Basically I have a class and it is instincable (not static). Basically I want the class to be able to generate its own threads and manage its own stuff. I don't want to make a global callback for each instance I make, this doesnt seem clean and proper to me. What is the proper way of doing what I want. If I try to pass the threadproc to CreateThread and it is the proc from a class instance the compiler says I cannot do this. What is the best way of achieving what I want? Thanks

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  • User defined top level control in XAML

    - by luke
    A normal UserControl looks like this in XAML: <UserControl x:Class="mynamespace.foo" ...namespaces...> <!-- content --> </UserControl> I'd like to be able to define my own top level object, along the lines of: <MyControl x:Class="mynamespace.mycontrol" ...namespaces...> <!-- content --> </UserControl> Where MyControl derives from a UserControl itself. Of course the compiler complains about "MyControl" not being found. Is there a way around this?

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  • Documentation concerning platform-specific macros in Linux/POSIX

    - by Nubok
    When compiling a C/C++ program under Windows using Visual Studio (or a compiler that tries to be compatible) there is a predefined macro _WIN32 (Source: http://msdn.microsoft.com/en-us/library/b0084kay.aspx) that you can use for platform-specific #ifdef-s. What I am looking for is an analogon under Linux: a macro which tells me that I am compiling for Linux/an OS that claims to be (more or less) POSIX-compatible. So I looked into gcc documentation and found this: http://gcc.gnu.org/onlinedocs/cpp/System_002dspecific-Predefined-Macros.html Applied to my program, the following macros (gcc 4.4.5 - Ubuntu 10.10) looked promising (I hope that I didn't drop an important macro): #define __USE_BSD 1 #define __unix__ 1 #define __linux 1 #define __unix 1 #define __linux__ 1 #define _POSIX_SOURCE 1 #define __STDC_HOSTED__ 1 #define __STDC_IEC_559__ 1 #define __gnu_linux__ 1 #define __USE_SVID 1 #define __USE_XOPEN2K 1 #define __USE_POSIX199506 1 #define _G_USING_THUNKS 1 #define __USE_XOPEN2K8 1 #define _BSD_SOURCE 1 #define unix 1 #define linux 1 #define __USE_POSIX 1 #define __USE_POSIX199309 1 #define __SSP__ 1 #define _SVID_SOURCE 1 #define _G_HAVE_SYS_CDEFS 1 #define __USE_POSIX_IMPLICITLY 1 Where do I find a detailed documentation of them - as to the mentioned Windows-specific macros above? Additionally I'd be interested in macros normally defined for other POSIX-compliant operating systems as *BSD etc.

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  • Dependency Injection with @Inject in Weld (JSR-299 RI). How is the corresponding @Produces found?

    - by Thorbjørn Ravn Andersen
    I have played with the JSR-299 Reference Implementation "Weld" with the purpose of using it in a stand-alone application, and I have had a look at the documentation, and marveled at the magic. My question is how the producer of a given object to be @Inject'ed is found? Either the java compiler produces hints for annotations which is easily found by the classloader, or the complete classpath must be traversed loading all classes to see what they do which sounds highly inefficient to me, or it is a completely different approach. What is the trick?

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  • BeautifulSoup can't parse a webpage?

    - by JLTChiu
    I am using beautiful soup for parsing webpage now, I've heard it's very famous and good, but it doesn't seems works properly. Here's what I did import urllib2 from bs4 import BeautifulSoup page = urllib2.urlopen("http://www.cnn.com/2012/10/14/us/skydiver-record-attempt/index.html?hpt=hp_t1") soup = BeautifulSoup(page) print soup.prettify() I think this is kind of straightforward. I open the webpage and pass it to the beautifulsoup. But here's what I got: Warning (from warnings module): File "C:\Python27\lib\site-packages\bs4\builder\_htmlparser.py", line 149 "Python's built-in HTMLParser cannot parse the given document. This is not a bug in Beautiful Soup. The best solution is to install an external parser (lxml or html5lib), and use Beautiful Soup with that parser. See http://www.crummy.com/software/BeautifulSoup/bs4/doc/#installing-a-parser for help.")) ... HTMLParseError: bad end tag: u'</"+"script>', at line 634, column 94 I thought CNN website should be well designed, so I am not very sure what's going on though. Does anyone has idea about this?

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  • Is it possible to use WIndows Speech Recognition Engine in a word pronunciation game?

    - by XBasic3000
    I use to create an application that uses the windows speech recognition engine or the SAPI. its like a game for pronunciation that it give you score when you pronounce it correctly. but when i started experiments with SAPI, it has poor recognition unless if you load a grammar on it (XML) its give best recognition result. but the problem now is closest pronunciation from the input text will be recognize. for example: Database - dedebase - correct. even if you mispronounce it. it gives you correct answers. without using the xml grammar when you say database it give you "in the base/the base/data base/etc..." please post your answer,suggestion,clarification. votes for best answer. is it possible or not? by the way i use delphi compiler on the projects....

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  • C2244 when trying to call the pow function from inline assembly

    - by schrödingers cat
    I would like to call the pow function from inline assembly. The problem is i'm getting error C2244: 'pow' : unable to match function definition to an existing declaration. I'm new to assembly so this may be a trivial question but how do i resolve this? I guess it has something to do with the compiler not beeing able to properly resolve the overload of pow. The following code fragment is causing the error: do_POW: // push first argument to the stack sub esp, size value_type fld qword ptr [ecx] fstp qword ptr [esp] // push second argument to the stack sub esp, size value_type fld qword ptr [ecx - size value_type] fstp qword ptr [esp]and pop fpu stack // call the pow function call pow sub ecx, size value_type fstp qword ptr [ecx] add esp, 2 * size value_type jmp loop_start

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  • Netbeans (PHP) catching syntax error on xml declaration

    - by Mike Valeriano
    Hello. I've just installed and configured Netbeans to work with PHP (including xdebug), and almost everything is working as intended, except that I've been getting "errors" in the IDE after I edited the default webpage template to comply with xhtml 1.1. The template is this: <?xml version="1.0" encoding="${project.encoding}" ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=${project.encoding}" /> <title></title> </head> <body> </body> </html> These are the errors I receive (I can't post images yet). Page is created OK, character encoding is inherited from project's settings as expected. It's probably something to do with the xml declaration on top of the document, but I don't really know how to "tune" Netbeans to ignore it and not show the 3 errors on every page I create. The warning is there because NB does not recognize the xhtml 1.1 DTD, so it falls back to html 4.01, which does not support the xmlns attribute in the html tag - and that's the only thing I could find searching around. It will be fixed in the next version, so I'm not worried about it. I know there's nothing wrong with the markup, but there's probably something I'm missing in NB configuration, and I would like to get rid of those messages because they pretty much take all the space I reserve for errors/warnings/tasks. So is there any way I can either make NB recognize this xml declaration or make it ignore these specific "errors"? Thanks.

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  • What kind of assemblies can be called using P/Invoke ?

    - by milan
    Hi all, I allready asked at: Is it possible to call unmanaged code using C# reflection from managed code ? if it is possible to call C/C++ library unmanaged function with Invoke and reflection from .NET and the answer is yes. What I am not clear about is can I call using P/Invoke ANY assembly written/compiled/build with other compilers on my Windows PC like Labwindows/CVI(have some kind of C compiler) or Java written dll's, exe. If this is possible is it the same as explained in above given link using "Marshal.GetDelegateForFunctionPointer" ? Thanks! Milan.

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  • Changing property type in class that implements interface with object type property.

    - by used2could
    I know the title is a bit confusing but bare with me. (I'm up for suggestions on a new title lol) I'm writing a TemplateEngine that will allow me to use my own markup in text based files. I'm wanting to add controls as plugins as the application matures. Currently i've got a structure like the following: interface IControl string Id object Value class Label : IControl string Id string Value class Repeater : IControl string Id List<IControl> Value Now you'll see the strange part right away in the Repeater class with the Value property. I was hoping that having the Value type as object in the interface would allow me the flexibility to expand the controls as i go along. The compiler doesn't like this and for good reason i guess. Does anyone have any suggestions how to accomplish this? Note: Please don't go into suggesting things like use Spark View Engine for templating. There is a reason i'm creating extra work for myself.

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