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  • "AttributeError: fileno" when attemping to import from pyevolve

    - by Corey Sunwold
    I just installed Pyevolve using easy_install and I am getting errors trying to run my first program. I first tried copy and pasting the source code of the first example but this is what I receive when I attempt to run it: Traceback (most recent call last): File "/home/corey/CTest/first_intro.py", line 3, in from pyevolve import G1DList File "/usr/lib/python2.6/site-packages/Pyevolve-0.5-py2.6.egg/pyevolve/init.py", line 15, in File "/usr/lib/python2.6/site-packages/Pyevolve-0.5-py2.6.egg/pyevolve/Consts.py", line 240, in import Selectors File "/usr/lib/python2.6/site-packages/Pyevolve-0.5-py2.6.egg/pyevolve/Selectors.py", line 12, in File "/usr/lib/python2.6/site-packages/Pyevolve-0.5-py2.6.egg/pyevolve/GPopulation.py", line 11, in File "/usr/lib/python2.6/site-packages/Pyevolve-0.5-py2.6.egg/pyevolve/FunctionSlot.py", line 14, in File "/usr/lib/python2.6/site-packages/Pyevolve-0.5-py2.6.egg/pyevolve/Util.py", line 20, in AttributeError: fileno I am running python 2.6 on Fedora 11 X86_64.

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  • What technical skills needed for algorithmic trading, HFT, etc?

    - by alchemical
    I'm interested in getting into developing trading systems, black box, HFT, etc. My primary experience is with C# and .Net (7 years). I've also done some sockets programming. I have some experience in finance working on analysis applications (2 years). My goal is to move into developing automated trading systems for a hedge fund, bank, etc. Is there any way to learn the skills needed for this without somehow getting the job first? I've looked at the open source tradelink, IB interactive brokerage, etc. I'm playing around with this framework, and may hook it up and do some paper trading. However, I'm not sure if this has much relationship with how a well-funded entity would be conducting a high-level automated trading operation. I.e. would the tools and frameworks they prefer be a totally different skill-set? Also wondering if I need to learn C++ and/or Java for these types of apps.

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  • MVVM View-First Approach How Change View

    - by CodeWeasel
    Hi everybody, Does anybody have an idea how to change screens (views) in a MVVM View-First-Approach (The view instantiates the ViewModel: DataContext="{Binding Source={StaticResource VMLocator}, Path=Find[EntranceViewModel]}" ) For example: In my MainWindow (Shell) I show a entrance view with a Button "GoToBeach". <Window> <DockPanel> <TextBox DockPanel.Dock="Top" Text="{Binding Title}" /> <view.EntranceView DockPanel.Dock="Top" /> </DockPanel> </Window> When the button is clicked I want to get rid of the "EntranceView" and show the "BeachView". I am really curious if somebody knows a way to keep the View-First Approach and change the screen (view) to the "BeachView". I know there are several ways to implement it in a ViewModel-First Approach, but that is not the question. Perhabs I missed something in my mvvm investigation and can't see the wood for the trees... otherwise i am hoping for a inspiring discussion.

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  • How do you replace a method of a Moose object at runtime?

    - by xxxxxxx
    Is it possible to replace a method of a Moose object at runtime ? By looking at the source code of Class::MOP::Method (which Moose::Meta::Method inherits from) I concluded that by doing $method->{body} = sub{ my stuff } I would be able to replace at runtime a method of an object. I can get the method using $object->meta->find_method_by_name(<method_name>); However, this didn't quite work out. Is it conceivable to modify methods at run time? And, what is the way to do it with Moose?

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  • springTestContextBeforeTestMethod failed in Maven spring-test

    - by joejax
    I try to setup a project with spring-test using TestNg in Maven. The code is like: @ContextConfiguration(locations={"test-context.xml"}) public class AppTest extends AbstractTestNGSpringContextTests { @Test public void testApp() { assert true; } } A test-context.xml simply defined a bean: <bean id="app" class="org.sonatype.mavenbook.simple.App"/> I got error for Failed to load ApplicationContext when running mvn test from command line, seems it cannot find the test-context.xml file; however, I can get it run correctly inside Eclipse (with TestNg plugin). So, test-context.xml is under src/test/resources/, how do I indicate this in the pom.xml so that 'mvn test' command will work? Thanks, UPDATE: Thanks for the reply. Cannot load context file error was caused by I moved the file arround in different location since I though the classpath was the problem. Now I found the context file seems loaded from the Maven output, but the test is failed: Running TestSuite May 25, 2010 9:55:13 AM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions INFO: Loading XML bean definitions from class path resource [test-context.xml] May 25, 2010 9:55:13 AM org.springframework.context.support.AbstractApplicationContext prepareRefresh INFO: Refreshing org.springframework.context.support.GenericApplicationContext@171bbc9: display name [org.springframework.context.support.GenericApplicationContext@171bbc9]; startup date [Tue May 25 09:55:13 PDT 2010]; root of context hierarchy May 25, 2010 9:55:13 AM org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory INFO: Bean factory for application context [org.springframework.context.support.GenericApplicationContext@171bbc9]: org.springframework.beans.factory.support.DefaultListableBeanFactory@1df8b99 May 25, 2010 9:55:13 AM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@1df8b99: defining beans [app,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor]; root of factory hierarchy Tests run: 3, Failures: 2, Errors: 0, Skipped: 1, Time elapsed: 0.63 sec <<< FAILURE! Results : Failed tests: springTestContextBeforeTestMethod(org.sonatype.mavenbook.simple.AppTest) springTestContextAfterTestMethod(org.sonatype.mavenbook.simple.AppTest) Tests run: 3, Failures: 2, Errors: 0, Skipped: 1 If I use spring-test version 3.0.2.RELEASE, the error becomes: org.springframework.test.context.testng.AbstractTestNGSpringContextTests.springTestContextPrepareTestInstance() is depending on nonexistent method null Here is the structure of the project: simple |-- pom.xml `-- src |-- main | `-- java `-- test |-- java `-- resources |-- test-context.xml `-- testng.xml testng.xml: <suite name="Suite" parallel="false"> <test name="Test"> <classes> <class name="org.sonatype.mavenbook.simple.AppTest"/> </classes> </test> </suite> test-context.xml: <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd" default-lazy-init="true"> <bean id="app" class="org.sonatype.mavenbook.simple.App"/> </beans> In the pom.xml, I add testng, spring, and spring-test artifacts, and plugin: <dependency> <groupId>org.testng</groupId> <artifactId>testng</artifactId> <version>5.1</version> <classifier>jdk15</classifier> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring</artifactId> <version>2.5.6</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>2.5.6</version> <scope>test</scope> </dependency> <build> <finalName>simple</finalName> <plugins> <plugin> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.6</source> <target>1.6</target> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-surefire-plugin</artifactId> <configuration> <suiteXmlFiles> <suiteXmlFile>src/test/resources/testng.xml</suiteXmlFile> </suiteXmlFiles> </configuration> </plugin> </plugins> Basically, I replaced 'A Simple Maven Project' Junit with TestNg, hope it works. UPDATE: I think I got the problem (still don't know why) - Whenever I extends AbstractTestNGSpringContextTests or AbstractTransactionalTestNGSpringContextTests, the test will failed with this error: Failed tests: springTestContextBeforeTestMethod(org.sonatype.mavenbook.simple.AppTest) springTestContextAfterTestMethod(org.sonatype.mavenbook.simple.AppTest) So, eventually the error went away when I override the two methods. I don't think this is the right way, didn't find much info from spring-test doc. If you know spring test framework, please shred some light on this.

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  • Consuming an .ics in YQL

    - by Josh
    How would one consume an ICS file in YQL? Given an .ics such as: http://www.hebcal.com/export/ba/8a35a5efbb27548bc0272b94b8de96.ics?subscribe=1&v=1&year=2010&month=x&nh=on&tag=fp.ql&c=off How would I go about using YQL to select certain events based on fields, etc. I've tried the standard formats, and the only format that seems to even parse the file is HTML - which puts it all in a <p>, and removes the line returns that give the file meaning. I've had some success with using Yahoo Pipe's Fetch Feed Source, but was wondering if it's possible to do this entirely in YQL. Any ideas?

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  • Sharing memory among YACC, Lex, and C files

    - by sczizzo
    I have a YACC (Bison) grammar, a Lex (Flex) tokenizer, and a C program among which I need to share a struct (or really any variable). Currently, I declare the actual object in the grammar file and extern it wherever I need it (which is to say, my C source file), usually using a pointer to manipulate it. I have a shared header (and implementation) file between the C file and the grammar file with functions useful for manipulating my data structure. This works, but it feels a little uncomfortable. Is there a better way to share memory between the grammar and program?

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  • Skia Decoder fails to decode remote Stream

    - by Samuh
    I am trying to open a remote Stream of a JPEG image and convert it into a Bitmap object: BitmapFactory.decodeStream( new URL("http://some.url.to/source/image.jpg") .openStream()); The decoder returns null and in the logs I get the following message: DEBUG/skia(xxxx): --- decoder->decode returned false Note: 1. the content length is non-zero and content type is image/jpeg 2. When I open the URL in browser I can see the image. What is that I am missing here? Please help. Thanks.

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  • Where is a good place for a code review?

    - by Carlos Nunez
    Hi, all! A few colleagues and I created a simple packet capturing application based on libpcap, GTK+ and sqlite as a project for a Networks Engineering course at our university. While it (mostly) works, I am trying to improve my programming skills and would appreciate it if members of the community could look at what we've put together. Is this a good place to ask for such a review? If not, what are good sites I can throw this question up on? The source code is hosted by Google Code (http://code.google.com/p/nbfm-sniffer) and an executable is available for download (Windows only, though it does compile on Linux and should compile on OS X Leopard as well provided one has gtk+ SDK installed). Thanks, everyone! -Carlos Nunez

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  • DependencyProperty ignores OnPropertyChanged();

    - by Kovpaev Alexey
    I have PointsListView and PointContainer: INotifyPropertyChanged, ICollection<Point>. public class PointContainer: INotifyPropertyChanged, ICollection<Point> { public event PropertyChangedEventHandler PropertyChanged; protected void OnPropertyChanged(PropertyChangedEventArgs e) { if (PropertyChanged != null) PropertyChanged(this, e); } public IEnumerable<Point> Points { get { return points.Values; } } public void Clear() { points.Clear(); OnPropertyChanged(new PropertyChangedEventArgs("Points")); } ... } For the reliability I made a binding from code: private void BindPointContainerToListView() { Binding binding = new Binding(); binding.Source = PointContainer; binding.Path = new PropertyPath("Points"); PointsListView.SetBinding(ListView.ItemsSourceProperty, binding); } Why when change PointContainer is not automatically updated PointsListView.ItemsSource. PointsListView.Items.Refresh (); solves the problem, but why does not work automatically? What am I doing wrong?

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  • Is there a calculator with LaTeX-syntax?

    - by Jørgen Fogh
    When I write math in LaTeX I often need to perform simple arithmetic on numbers in my LaTeX source, like 515.1544 + 454 = ???. I usually copy-paste the LaTeX code into Google to get the result, but I still have to manually change the syntax, e.g. \frac{154,7}{25} - (289 - \frac{1337}{42}) must be changed to 154,7/25 - (289 - 1337/42) It seems trivial to write a program to do this for the most commonly used operations. Is there a calculator which understand this syntax? EDIT: I know that doing this perfectly is impossible (because of the halting problem). Doing it for the simple cases I need is trivial. \frac, \cdot, \sqrt and a few other tags would do the trick. The program could just return an error for cases it does not understand.

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  • What useful GDB scripts have you used/written?

    - by nik
    People use gdb on and off for debugging, of course there are lots of other debugging tools across the varied OSes, with and without GUI and, maybe other fancy IDE features. I would like to know what useful gdb scripts you have written and liked. While, I do not mean a dump of commands in a something.gdb file that you source to pull out a bunch of data, if that made your day, go ahead and talk about it. Lets think conditional processing, control loops and functions written for more elegant and refined programming to debug and, maybe even for whitebox testing Things get interesting when you start debugging remote systems (say, over a serial/ethernet interface) And, what if the target is a multi-processor (and, multithreaded) system Let me put a simple case as an example... Say, A script that traversed serially over entries to locate a bad entry in a large hash-table that is implemented on an embedded platform. That helped me debug a broken hash-table once.

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  • Autofac in Asp.net mvc 2

    - by Joe
    I want/need to compile autofac with asp.net mvc 2 website. I want to step thru the source to see how it works. But here is my problem. The binaries for mvc dll is apparently bound for asp.net mvc 1. I am having trouble working out what the settings for the project file need to be for .Net 3.5 and asp.net mvc 2. one is the NET35 directive but I still get errors that out is not a type.

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  • Creating Python C module from Fortran sources on Ubuntu 10.04 LTS

    - by Botondus
    In a project I work on we use a Python C module compiled from Fortran with f2py. I've had no issues building it on Windows 7 32bit (using mingw32) and on the servers it's built on 32bit Linux. But I've recently installed Ubuntu 10.04 LTS 64bit on my laptop that I use for development, and when I build it I get a lot of warnings (even though I've apparently installed all gcc/fortran libraries/compilers), but it does finish the build. However when I try to use the built module in the application, most of it seems to run well but then it crashes with an error: * glibc detected /home/botondus/Envs/gasit/bin/python: free(): invalid next size (fast): 0x0000000006a44760 ** Warnings on running *f2py -c -m module_name ./fortran/source.f90* customize UnixCCompiler customize UnixCCompiler using build_ext customize GnuFCompiler Could not locate executable g77 Found executable /usr/bin/f77 gnu: no Fortran 90 compiler found gnu: no Fortran 90 compiler found customize IntelFCompiler Could not locate executable ifort Could not locate executable ifc customize LaheyFCompiler Could not locate executable lf95 customize PGroupFCompiler Could not locate executable pgf90 Could not locate executable pgf77 customize AbsoftFCompiler Could not locate executable f90 absoft: no Fortran 90 compiler found absoft: no Fortran 90 compiler found absoft: no Fortran 90 compiler found absoft: no Fortran 90 compiler found absoft: no Fortran 90 compiler found absoft: no Fortran 90 compiler found customize NAGFCompiler Found executable /usr/bin/f95 customize VastFCompiler customize GnuFCompiler gnu: no Fortran 90 compiler found gnu: no Fortran 90 compiler found customize CompaqFCompiler Could not locate executable fort customize IntelItaniumFCompiler Could not locate executable efort Could not locate executable efc customize IntelEM64TFCompiler customize Gnu95FCompiler Found executable /usr/bin/gfortran customize Gnu95FCompiler customize Gnu95FCompiler using build_ext I have tried building a 32bit version by installing the gfortran multilib packages and running f2py with -m32 option (but with no success): f2py -c -m module_name ./fortran/source.f90 --f77flags="-m32" --f90flags="-m32" Any suggestions on what I could try to either build 32bit version or correctly build the 64bit version? Edit: It looks like it crashes right at the end of a subroutine. The 'write' executes fine... which is strange. write(6,*)'Eh=',Eh end subroutine calcolo_involucro The full backtrace is very long and I'm not sure if it's any help, but here it is: *** glibc detected *** /home/botondus/Envs/gasit/bin/python: free(): invalid next size (fast): 0x0000000007884690 *** ======= Backtrace: ========= /lib/libc.so.6(+0x775b6)[0x7fe24f8f05b6] /lib/libc.so.6(cfree+0x73)[0x7fe24f8f6e53] /usr/local/lib/python2.6/dist-packages/numpy/core/multiarray.so(+0x4183c)[0x7fe24a18183c] /home/botondus/Envs/gasit/bin/python[0x46a50d] /usr/local/lib/python2.6/dist-packages/numpy/core/multiarray.so(+0x4fbd8)[0x7fe24a18fbd8] /usr/local/lib/python2.6/dist-packages/numpy/core/multiarray.so(+0x5aded)[0x7fe24a19aded] /home/botondus/Envs/gasit/bin/python(PyEval_EvalFrameEx+0x516e)[0x4a7c5e] /home/botondus/Envs/gasit/bin/python(PyEval_EvalFrameEx+0x5a60)[0x4a8550] /home/botondus/Envs/gasit/bin/python(PyEval_EvalCodeEx+0x911)[0x4a9671] /home/botondus/Envs/gasit/bin/python[0x537620] /home/botondus/Envs/gasit/bin/python(PyObject_Call+0x47)[0x41f0c7] /home/botondus/Envs/gasit/bin/python[0x427dff] /home/botondus/Envs/gasit/bin/python(PyObject_Call+0x47)[0x41f0c7] /home/botondus/Envs/gasit/bin/python[0x477bff] /home/botondus/Envs/gasit/bin/python[0x46f47f] /home/botondus/Envs/gasit/bin/python(PyObject_Call+0x47)[0x41f0c7] /home/botondus/Envs/gasit/bin/python(PyEval_EvalFrameEx+0x4888)[0x4a7378] /home/botondus/Envs/gasit/bin/python(PyEval_EvalCodeEx+0x911)[0x4a9671] /home/botondus/Envs/gasit/bin/python(PyEval_EvalFrameEx+0x4d19)[0x4a7809] /home/botondus/Envs/gasit/bin/python(PyEval_EvalCodeEx+0x911)[0x4a9671] /home/botondus/Envs/gasit/bin/python(PyEval_EvalFrameEx+0x4d19)[0x4a7809] /home/botondus/Envs/gasit/bin/python(PyEval_EvalCodeEx+0x911)[0x4a9671] /home/botondus/Envs/gasit/bin/python[0x537620] /home/botondus/Envs/gasit/bin/python(PyObject_Call+0x47)[0x41f0c7] /home/botondus/Envs/gasit/bin/python(PyEval_CallObjectWithKeywords+0x43)[0x4a1b03] /usr/local/lib/python2.6/dist-packages/numpy/core/multiarray.so(+0x2ee94)[0x7fe24a16ee94] /home/botondus/Envs/gasit/bin/python(_PyObject_Str+0x61)[0x454a81] /home/botondus/Envs/gasit/bin/python(PyObject_Str+0xa)[0x454b3a] /home/botondus/Envs/gasit/bin/python[0x461ad3] /home/botondus/Envs/gasit/bin/python[0x46f3b3] /home/botondus/Envs/gasit/bin/python(PyObject_Call+0x47)[0x41f0c7] /home/botondus/Envs/gasit/bin/python(PyEval_EvalFrameEx+0x4888)[0x4a7378] /home/botondus/Envs/gasit/bin/python(PyEval_EvalCodeEx+0x911)[0x4a9671] /home/botondus/Envs/gasit/bin/python(PyEval_EvalFrameEx+0x4d19)[0x4a7809] /home/botondus/Envs/gasit/bin/python(PyEval_EvalFrameEx+0x5a60)[0x4a8550] ======= Memory map: ======== 00400000-0061c000 r-xp 00000000 08:05 399145 /home/botondus/Envs/gasit/bin/python 0081b000-0081c000 r--p 0021b000 08:05 399145 /home/botondus/Envs/gasit/bin/python 0081c000-0087e000 rw-p 0021c000 08:05 399145 /home/botondus/Envs/gasit/bin/python 0087e000-0088d000 rw-p 00000000 00:00 0 01877000-07a83000 rw-p 00000000 00:00 0 [heap] 7fe240000000-7fe240021000 rw-p 00000000 00:00 0 7fe240021000-7fe244000000 ---p 00000000 00:00 0 7fe247631000-7fe2476b1000 r-xp 00000000 08:03 140646 /usr/lib/libfreetype.so.6.3.22 7fe2476b1000-7fe2478b1000 ---p 00080000 08:03 140646 /usr/lib/libfreetype.so.6.3.22 7fe2478b1000-7fe2478b6000 r--p 00080000 08:03 140646 /usr/lib/libfreetype.so.6.3.22 7fe2478b6000-7fe2478b7000 rw-p 00085000 08:03 140646 /usr/lib/libfreetype.so.6.3.22 7fe2478b7000-7fe2478bb000 r-xp 00000000 08:03 263882 /usr/lib/python2.6/dist-packages/PIL/_imagingft.so 7fe2478bb000-7fe247aba000 ---p 00004000 08:03 263882 /usr/lib/python2.6/dist-packages/PIL/_imagingft.so 7fe247aba000-7fe247abb000 r--p 00003000 08:03 263882 /usr/lib/python2.6/dist-packages/PIL/_imagingft.so 7fe247abb000-7fe247abc000 rw-p 00004000 08:03 263882 /usr/lib/python2.6/dist-packages/PIL/_imagingft.so 7fe247abc000-7fe247abf000 r-xp 00000000 08:03 266773 /usr/lib/python2.6/lib-dynload/_bytesio.so 7fe247abf000-7fe247cbf000 ---p 00003000 08:03 266773 /usr/lib/python2.6/lib-dynload/_bytesio.so 7fe247cbf000-7fe247cc0000 r--p 00003000 08:03 266773 /usr/lib/python2.6/lib-dynload/_bytesio.so 7fe247cc0000-7fe247cc1000 rw-p 00004000 08:03 266773 /usr/lib/python2.6/lib-dynload/_bytesio.so 7fe247cc1000-7fe247cc5000 r-xp 00000000 08:03 266786 /usr/lib/python2.6/lib-dynload/_fileio.so 7fe247cc5000-7fe247ec4000 ---p 00004000 08:03 266786 /usr/lib/python2.6/lib-dynload/_fileio.so 7fe247ec4000-7fe247ec5000 r--p 00003000 08:03 266786 /usr/lib/python2.6/lib-dynload/_fileio.so 7fe247ec5000-7fe247ec6000 rw-p 00004000 08:03 266786 /usr/lib/python2.6/lib-dynload/_fileio.so 7fe247ec6000-7fe24800c000 r-xp 00000000 08:03 141358 /usr/lib/libxml2.so.2.7.6 7fe24800c000-7fe24820b000 ---p 00146000 08:03 141358 /usr/lib/libxml2.so.2.7.6 7fe24820b000-7fe248213000 r--p 00145000 08:03 141358 /usr/lib/libxml2.so.2.7.6 7fe248213000-7fe248215000 rw-p 0014d000 08:03 141358 /usr/lib/libxml2.so.2.7.6 7fe248215000-7fe248216000 rw-p 00000000 00:00 0 7fe248216000-7fe248229000 r-xp 00000000 08:03 140632 /usr/lib/libexslt.so.0.8.15 7fe248229000-7fe248428000 ---p 00013000 08:03 140632 /usr/lib/libexslt.so.0.8.15 7fe248428000-7fe248429000 r--p 00012000 08:03 140632 /usr/lib/libexslt.so.0.8.15 7fe248429000-7fe24842a000 rw-p 00013000 08:03 140632 /usr/lib/libexslt.so.0.8.15 7fe24842a000-7fe248464000 r-xp 00000000 08:03 141360 /usr/lib/libxslt.so.1.1.26 7fe248464000-7fe248663000 ---p 0003a000 08:03 141360 /usr/lib/libxslt.so.1.1.26 7fe248663000-7fe248664000 r--p 00039000 08:03 141360 /usr/lib/libxslt.so.1.1.26 7fe248664000-7fe248665000 rw-p 0003a000 08:03 141360 /usr/lib/libxslt.so.1.1.26 7fe248665000-7fe24876e000 r-xp 00000000 08:03 534240 /usr/local/lib/python2.6/dist-packages/lxml/etree.so 7fe24876e000-7fe24896d000 ---p 00109000 08:03 534240 /usr/local/lib/python2.6/dist-packages/lxml/etree.so 7fe24896d000-7fe24896e000 r--p 00108000 08:03 534240 /usr/local/lib/python2.6/dist-packages/lxml/etree.so 7fe24896e000-7fe248999000 rw-p 00109000 08:03 534240 /usr/local/lib/python2.6/dist-packages/lxml/etree.so 7fe248999000-7fe2489a7000 rw-p 00000000 00:00 0 7fe2489a7000-7fe2489bd000 r-xp 00000000 08:03 132934 /lib/libgcc_s.so.1

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  • Locating binding errors

    - by softengine
    I'm dealing with a large WPF application that is outputting a large number of binding errors. A typical error looks like this: System.Windows.Data Error: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType='System.Windows.Controls.ItemsControl', AncestorLevel='1''. BindingExpression:Path=HorizontalContentAlignment; DataItem=null; target element is 'MenuItem' (Name=''); target property is 'HorizontalContentAlignment' (type 'HorizontalAlignment') Problem is I don't know where in the app this is coming from. Searching the entire solution for AncestorType={x:Type ItemsControl} doesn't necessary help since I still don't know which result is the culprit. I've tried setting PresentationTraceSources.DataBindingSource.Switch.Level = SourceLevels.All; but the extra information doesn't help locate the problematic bindings. File names and line numbers is really what I need. Is there anyway to get this information?

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  • NullPointerException in webview.java (android.webkit.WebView$PrivateHandler.handleMessage)

    - by PacificSky
    Every few days I get a crash report for my application with the following stack trace, or small variants thereof (with different line numbers based on different android versions) java.lang.NullPointerException at WebView.java:8241:in `android.webkit.WebView$PrivateHandler.handleMessage' Handler.java:99:in `android.os.Handler.dispatchMessage' Looper.java:150:in `android.os.Looper.loop' ActivityThread.java:4293:in `android.app.ActivityThread.main' Method.java:-2:in `java.lang.reflect.Method.invokeNative' Method.java:507:in `java.lang.reflect.Method.invoke' ZygoteInit.java:849:in `com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run' ZygoteInit.java:607:in `com.android.internal.os.ZygoteInit.main' NativeStart.java:-2:in `dalvik.system.NativeStart.main' This specific stack was on Android 2.3.4 on a HTC EVO 3D PG86100 device. My app does host several webviews for some oAuth-related login scenarios. How should I go about trying to figure out how to fix this? I've tried looking on grepcode to find the source, but I'm unable to find a matching line number that makes sense. Is my Grepcode-fu weak?

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  • [C#] How to convert string encoded in windows-1250 to unicode ?

    - by Deveti Putnik
    Hi! I am receiving from some dll (which is wrapper for some external data source) strings in Windows-1250 codepage and I would like to insert them correctly (as unicode) to table in SQL Server Database. Since particular row in database which should hold that data is of NVarchar type, I only needed to convert it in my C# code to unicode and pass it as parameter. Everything is well and nice, but I stumbled on conversion step. I tried the following but that doesn't work: private static String getUnicodeValue(string string2Encode) // { Encoding srcEncoding = Encoding.GetEncoding("Windows-1250"); UnicodeEncoding dstEncoding = new UnicodeEncoding(); byte[] srcBytes = srcEncoding.GetBytes(string2Encode); byte[] dstBytes = dstEncoding.GetBytes(string2Encode); return dstEncoding.GetString(dstBytes); } When I insert this returned string to table, I don't get correct letters like Ð, d, C, c, C or c. Please, help! :)

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  • Linux, static lib referring to other static lib within an executable

    - by andras
    Hello, I am creating an application, which consists of two static libs and an executable. Let's call the two static libs: libusefulclass.a libcore.a And the application: myapp libcore instantiates and uses the class defined in libusefulclass (let's call it UsefulClass) Now, if I link the application in the following way: g++ -m64 -Wl,-rpath,/usr/local/Trolltech/Qt-4.5.4/lib -o myapp src1.o src2.o srcN.o -lusefulclass -lcore The linker complains about the methods in libusefulclass not being found: undefined reference to `UsefulClass::foo()' etc. I found a workaround for this: If UsefulClass is also instantiated within the source files of the executable itself, the application is linked without any problems. My question is: is there a more clean way to make libcore refer to methods defined in libusefulclass, or static libs just cannot be linked against eachother? TIA P.S.: In case that matters: the application is being developed in C++ using Qt, but I feel this is not a Qt problem, but a library problem in general.

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  • Use BGInfo to Build a Database of System Information of Your Network Computers

    - by Sysadmin Geek
    One of the more popular tools of the Sysinternals suite among system administrators is BGInfo which tacks real-time system information to your desktop wallpaper when you first login. For obvious reasons, having information such as system memory, available hard drive space and system up time (among others) right in front of you is very convenient when you are managing several systems. A little known feature about this handy utility is the ability to have system information automatically saved to a SQL database or some other data file. With a few minutes of setup work you can easily configure BGInfo to record system information of all your network computers in a centralized storage location. You can then use this data to monitor or report on these systems however you see fit. BGInfo Setup If you are familiar with BGInfo, you can skip this section. However, if you have never used this tool, it takes just a few minutes to setup in order to capture the data you are looking for. When you first open BGInfo, a timer will be counting down in the upper right corner. Click the countdown button to keep the interface up so we can edit the settings. Now edit the information you want to capture from the available fields on the right. Since all the output will be redirected to a central location, don’t worry about configuring the layout or formatting. Configuring the Storage Database BGInfo supports the ability to store information in several database formats: SQL Server Database, Access Database, Excel and Text File. To configure this option, open File > Database. Using a Text File The simplest, and perhaps most practical, option is to store the BGInfo data in a comma separated text file. This format allows for the file to be opened in Excel or imported into a database. To use a text file or any other file system type (Excel or MS Access), simply provide the UNC to the respective file. The account running the task to write to this file will need read/write access to both the share and NTFS file permissions. When using a text file, the only option is to have BGInfo create a new entry each time the capture process is run which will add a new line to the respective CSV text file. Using a SQL Database If you prefer to have the data dropped straight into a SQL Server database, BGInfo support this as well. This requires a bit of additional configuration, but overall it is very easy. The first step is to create a database where the information will be stored. Additionally, you will want to create a user account to fill data into this table (and this table only). For your convenience, this script creates a new database and user account (run this as Administrator on your SQL Server machine): @SET Server=%ComputerName%.@SET Database=BGInfo@SET UserName=BGInfo@SET Password=passwordSQLCMD -S “%Server%” -E -Q “Create Database [%Database%]“SQLCMD -S “%Server%” -E -Q “Create Login [%UserName%] With Password=N’%Password%’, DEFAULT_DATABASE=[%Database%], CHECK_EXPIRATION=OFF, CHECK_POLICY=OFF”SQLCMD -S “%Server%” -E -d “%Database%” -Q “Create User [%UserName%] For Login [%UserName%]“SQLCMD -S “%Server%” -E -d “%Database%” -Q “EXEC sp_addrolemember N’db_owner’, N’%UserName%’” Note the SQL user account must have ‘db_owner’ permissions on the database in order for BGInfo to work correctly. This is why you should have a SQL user account specifically for this database. Next, configure BGInfo to connect to this database by clicking on the SQL button. Fill out the connection properties according to your database settings. Select the option of whether or not to only have one entry per computer or keep a history of each system. The data will then be dropped directly into a table named “BGInfoTable” in the respective database.   Configure User Desktop Options While the primary function of BGInfo is to alter the user’s desktop by adding system info as part of the wallpaper, for our use here we want to leave the user’s wallpaper alone so this process runs without altering any of the user’s settings. Click the Desktops button. Configure the Wallpaper modifications to not alter anything.   Preparing the Deployment Now we are all set for deploying the configuration to the individual machines so we can start capturing the system data. If you have not done so already, click the Apply button to create the first entry in your data repository. If all is configured correctly, you should be able to open your data file or database and see the entry for the respective machine. Now click the File > Save As menu option and save the configuration as “BGInfoCapture.bgi”.   Deploying to Client Machines Deployment to the respective client machines is pretty straightforward. No installation is required as you just need to copy the BGInfo.exe and the BGInfoCapture.bgi to each machine and place them in the same directory. Once in place, just run the command: BGInfo.exe BGInfoCapture.bgi /Timer:0 /Silent /NoLicPrompt Of course, you probably want to schedule the capture process to run on a schedule. This command creates a Scheduled Task to run the capture process at 8 AM every morning and assumes you copied the required files to the root of your C drive: SCHTASKS /Create /SC DAILY /ST 08:00 /TN “System Info” /TR “C:\BGInfo.exe C:\BGInfoCapture.bgi /Timer:0 /Silent /NoLicPrompt” Adjust as needed, but the end result is the scheduled task command should look something like this:   Download BGInfo from Sysinternals Latest Features How-To Geek ETC How To Create Your Own Custom ASCII Art from Any Image How To Process Camera Raw Without Paying for Adobe Photoshop How Do You Block Annoying Text Message (SMS) Spam? How to Use and Master the Notoriously Difficult Pen Tool in Photoshop HTG Explains: What Are the Differences Between All Those Audio Formats? 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  • What parser generator do you recommend

    - by stefan.ciobaca
    I'm currently shopping for a FOSS parser generator for a project of mine. It has to support either C or C++. I've looked at bison/flex and at boost::spirit. I went from writing my own to spirit to bison to spirit to bison to spirit, each time hit by some feature I found unpleasant. The thing I hate most about bison/flex is that they actually generate C/C++ source for you. There are a number of disadvantages to this, e.g. debugging. I like spirit from this point of view, but I find it very very heavy on syntax. I am curious about what you are using, what you would recommend, and general thoughts about the state of the art in parser generators. I am also curious to hear about approaches being used in other languages for parsing problems.

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  • Linking C and CXX files in CMake

    - by vedro so snegom
    Hi I'm building C++ app with CMake. But it uses some source files in C. Here is simplified structure: trunk/CMakeLists.txt: project(myapp) set(CMAKE_CXX_FLAGS "${CMAKE_C_FLAGS} -g -Wall") add_subdirectory (src myapp) trunk/src/main.cpp: #include "smth/f.h" int main() { f(); } trunk/src/CMakeLists.txt: add_subdirectory (smth) link_directories (smth) set(APP_SRC main) add_executable (myapp ${APP_SRC}) target_link_libraries (myapp smth) trunk/src/smth/f.h: #ifndef F_H #define F_H void f(); #endif trunk/src/smth/f.c: #include "f.h" void f() {} trunk/src/smth/CMakeLists.txt set (SMTH_SRC some_cpp_file1 some_cpp_file2 f) add_library (smth STATIC ${SMTH_SRC}) The problem is: i run gmake, it compiles all the files and when it links all libs together, i get: undefined reference to `f()` in main.cpp if i rename f.c into f.cpp everything goes just fine. What's the difference and how to handle it? Thanks

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  • Undefined Results in jQuery Autocomplete

    - by CreativeNotice
    So I've got the latest versions of jQuery and UI running. I'm using the basic autocomplete invocation and returning valid JSON (validated via JSONLint). $("input#cust_id").autocomplete({ source: yoda.app.base + "/assets/cfc/util/autocomplete.cfc?method=cust", minLength: 2, select: function(event, ui) { log(ui.item ? ("Selected: " + ui.item.value + " aka " + ui.item.id) : "Nothing selected, input was " + this.value); } }); Both the value and label elements of the returned array show up in the list as undefined. I can watch the results returned via Firebug and the JSON is correct there as well. Also, while the list only says "undefined" it does say that the same number of times as records returned in JSON. [{"VALUE":"custid1","LABEL":"My Customer Name 1"},{"VALUE":"custname2","LABEL":"My customer name 2"}]

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  • Python 2 vs Python 3 and Tutorial

    - by MR-J
    Hey guys. I am 12 years old and I have had a small amount of experience with BASIC. I am thinking about learning Python, but I’m not sure if I should learn the 2.6 version or the 3.0 version. I don’t really care about the support for libraries or anything along those lines quite yet. I was wondering if it is easier to code in 3.0 than 2.6. And is it more fun and productive? I would also appreciate it if you could point me in the right direction for a simple yet complete tutorial that is easy to understand and possible teaches Object Oriented Programing. I don’t really care if it teaches OOP or not. One more thing; if I do learn python, is it possible to easily compile a python source code file into a 'stand-alone' .exe file for Windows? I really liked that functionality in BASIC. Thanks!!!!

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  • WinForms HTML visualizing controls comparison

    - by DarkDeny
    Hello all! I am working on some project which requires some HTML visualizing control (WinForms). Currently I am aware only of two such a controls: AxWebBrowser (as far as I understand this is IE-based ActiveX control for winforms) Nabu HTMLView (open source library with visualizing capabilities). Are there any other choices? What are their cons and pros? How configurable they are? For example I want to disable navigation and scripts, hook onto loading methods to override resources loading and so on.

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  • How to overlay view over navigation controller bar?

    - by 0SX
    I've sorta got a little problem. I'm trying to add a popoverview to my app but part of the popoverview get's hidden by my navigation controller bar. How can I make my popoverview overlay over top of the navcontrollerbar? Here's an image of the problem: http://img593.imageshack.us/img593/4056/viewn.jpg Here's my code I'm working with: - (IBAction)onButtonClick:(UIButton *)button { if (self.popoverController) { [self.popoverController dismissPopoverAnimated:YES]; self.popoverController = nil; [button setTitle:@"Show Popover" forState:UIControlStateNormal]; } else { UIViewController *contentViewController = [[WEPopoverContentViewController alloc] initWithStyle:UITableViewStylePlain]; self.popoverController = [[[WEPopoverController alloc] initWithContentViewController:contentViewController] autorelease]; [self.popoverController presentPopoverFromRect:button.frame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionDown animated:YES]; [contentViewController release]; [button setTitle:@"Hide Popover" forState:UIControlStateNormal]; } } Is there anyway to make this popover above the navigation controller bar? Here is the full source code what I'm working with https://github.com/werner77/WEPopover Hopefully someone knows how to fix this problem, Thanks in advance.

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