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  • How can I get my UserControl to look like a ComboBox?

    - by NoLuke
    I have a user control containing a TextBox, ToggleButton and Popup, just like the real ComboBox. Now my problem is to style it so that it looks just like the normal ComboBox. In Blend, I can "Edit Template/Edit a Copy..." of a real ComboBox to get the bits and pieces I need to get it to look right. For one Windows theme (Aero). If the application is run on another theme (e.g Luna), the control does not change its look, it still has the Aero look. Do I have to supply a style/template for each Windows theme, or can I somehow get hold of (at run-time) the default ComboBox style and apply it to my UserControl? Instead of making a UserControl, I have tried modifying a real ComboBox to my needs, but I just couldn't get it to work. How can I replace ALL the logic of a ComboBox with my own?

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  • Django naturaltime Localization error

    - by Edwin Lunando
    My language ID is 'id'. I used localized humanize library for my Django template tags and use the naturaltime, but the translation is partially wrong. The now translated to sekarang is right. second to detik. minute to menit, but when it comes to date, week, or months, the word is not translated to my language. It keeps printing date, week, and months. Here are my Django configuration TIME_ZONE = 'Asia/Jakarta' LANGUAGE_CODE = 'id' SITE_ID = 1 USE_I18N = True USE_L10N = True USE_TZ = True Here how I used the naturaltime template tags. <time class="discussion__info__item">{{ object.created|naturaltime }}</time> Do I forgot something? Thank you.

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  • Why timed lock doesnt throws a timeout exception in C++0x?

    - by Vicente Botet Escriba
    C++0x allows to lock on a mutex until a given time is reached, and return a boolean stating if the mutex has been locked or not. template <class Clock, class Duration> bool try_lock_until(const chrono::time_point<Clock, Duration>& abs_time); In some contexts, I consider an exceptional situation that the locking fails because of timeout. In this case an exception should be more appropriated. To make the difference a function lock_until could be used to get a timeout exception when the time is reached before locking. template <class Clock, class Duration> void lock_until(const chrono::time_point<Clock, Duration>& abs_time); Do you think that lock_until should be more adequate in some contexts? if yes, on which ones? If no, why try_lock_until will always be a better choice?

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  • Best practice: How to persist simple data without a database in django?

    - by Infinity
    I'm building a website that doesn't require a database because a REST API "is the database". (Except you don't want to be putting site-specific things in there, since the API is used by mostly mobile clients) However there's a few things that normally would be put in a database, for example the "jobs" page. You have master list view, and the detail views for each job, and it should be easy to add new job entries. (not necessarily via a CMS, but that would be awesome) e.g. example.com/careers/ and example.com/careers/77/ I could just hardcode this stuff in templates, but that's no DRY- you have to update the master template and the detail template every time. What do you guys think? Maybe a YAML file? Or any better ideas? Thx

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  • Difference between Class Abstraction and Object Interfaces in PHP?

    - by Mark Tomlin
    What is the difference between a Class Abstraction and an Object Interfaces in PHP? I ask because, I don't really see the point to both of them, they both do the same thing! So, what are the advantages of disadvantages using both against one or the other? Class Abstraction: abstract class aClass { // Force extending class to define these methods abstract public function setVariable($name, $var); abstract public function getHtml($template); } Object Interface: interface iClass { // Force impementing class to define these methods public function setVariable($name, $var); public function getHtml($template); }

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  • How can I strip line breaks from my XML with XSLT?

    - by Eric
    I have this XSLT: <xsl:strip-space elements="*" /> <xsl:template match="math"> <img class="math"> <xsl:attribute name="src">http://latex.codecogs.com/gif.latex?<xsl:value-of select="text()" /></xsl:attribute> </img> </xsl:template> Which is being applied to this XML (notice the line break): <math>\text{average} = \alpha \times \text{data} + (1-\alpha) \times \text{average}</math> Unfortunately, the transform creates this: <img class="math" src="http://latex.codecogs.com/gif.latex?\text{average} = \alpha \times \text{data} + (1-\alpha) \times&#10;&#9;&#9;&#9;&#9;&#9;\text{average}" /> Notice the whitespace character literals. Although it works, it's awfully messy. How can I prevent this?

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  • C++ enum casting and templates

    - by JP
    I get the following error with VS2008: Conversion to enumeration type requires an explicit cast (static_cast, C-style cast or function-style cast) When casting a down casting a ClassA to ClassA_1 and ClassA_1 is a templated class that received an enum for parameter such as: ClassA { virtual ~ClassA(){}; } template <class Param1> ClassA_1 : public ClassA { public: //constructor ClassA_1(Param1 p1) { _p1 = p1; } Param1 _p1; } So I have a upcasted ClassA a = new ClassA_1<myenum>(); When I need to do this: ClassA_1<myenum> a1 = (ClassA_1<myenum> a); // This fails ... The only way it works is: ClassA_1<int> a1 = (ClassA_1<int> a); but this break my template as it must always deal with int... How to properly cast a enum that is now a int, back into the enum?

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  • Reduce the file size of Excel

    - by Ram
    Hi, I'm working in an excel application and providing a menu to the user to add a new worksheet in that excel application (Excel Workbook). The worksheet will be added once the user clicks the "OK" button and I'm using a template to add this worksheet (The template has lot of formatting and formulas in it) Lets say the file size is 10 MB after adding a worksheet if the workbook is saved. Then I close the Excel application and reopen it and save the file then the file size is getting reduced to 8 MB. Can anybody let me know what could be the reason for the same? Thanks, Ram

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  • How to return a copy of the data in C++

    - by Josh Curren
    I am trying to return a new copy of the data in a C++ Template class. The following code is getting this error: invalid conversion from ‘int*’ to ‘int’. If I remove the new T then I am not returning a copy of the data but a pointer to it. template<class T> T OrderedList<T>::get( int k ) { Node<T>* n = list; for( int i = 0; i < k; i++ ) { n=n->get_link(); } return new T( n->get_data() ); // This line is getting the error ********** }

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  • Detect if a method was overridden using Reflection (C#)

    - by Andrey
    Say I have a base class TestBase where I define a vistual method TestMe() class TestBase { public virtual bool TestMe() { } } Now I inherit this class: class Test1 : TestBase { public override bool TestMe() {} } Now, using Reflection, I need to find if the method TestMe has been overriden in child class - is it possible? What I need it for - I am writing a designer visualizer for type "object" to show the whole hierarchy of inheritance and also show which virtual methods were overridden at which level.

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  • How to deal with accelerators for disabled controls?

    - by sharptooth
    I have a dialog created from a template. It has controls listed in the template in the following order: some irrelevant controls a label with an accelerator (let's pretend it's Alt-A) an edit box OK and Cancel buttons Normally when I hit Alt-A the keybord focus is transferred to the edit box - just as needed. However I sometimes need to disable to edit box. If I hit Alt-A when the edit box is disabled the effect is that the OK button is pressed and that is definitely not what I want. I would prefer to have no action taken in this case. What could I do to workaround this?

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  • WPF: capturing XAML into subclassed control

    - by Sonic Soul
    hello, i narrowed down what i want my wpf button to look like using XAML. now i would like to create a sub classed button control that i can just re-use w/out having to write all that markup <Button Click="TestGridColumnButton_Click" Background="Transparent" Width="16" Height="16" Margin="0,0,0,0" Padding="0,0,0,0" BorderBrush="{x:Null}"> <Button.Template> <ControlTemplate> <Image HorizontalAlignment="Center" VerticalAlignment="Center" Style="{StaticResource SourceStyle}" /> </ControlTemplate> </Button.Template> </Button> how can i set all these properties using C# ?

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  • Short intruduction to OOP basics

    - by woo
    Hi. Can somebody point me to good intruductions into OOP main paradigms, like inheritance, polymorphism, incapsulation? I am looking for short article, about 2-3 pages, for very quick reading. Thank you very much.

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  • C++ typedef for partial templates

    - by Gokul
    Hi, i need to do a typedef like this. template< class A, class B, class C > class X { }; template< class B, class C > typedef X< std::vector<B>, B, C > Y; I just found that it is not supported in C++. Can someone advise me on how to achieve the same through alternative means? Thanks, Gokul.

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  • How do I iterate over a tuple

    - by Caligo
    How can I iterate over a tuple starting from, say, index 1 to 2? The following doesn't work. using boost::fusion::cons; typedef cons<A, cons<B, cons<C, cons<D> > > > MyTuple; MyTuple tuple_; template <class T> struct DoSomething{ DoSomething(T& t) : t_(&t){ } template <class U> void operator()(U u){ boost::fusion::at<mpl::int_<u> >(*t_); } T* t_; }; boost::mpl::for_each< boost::mpl::range_c<int, 1, 3> >( DoSomething<MyTuple>(tuple_) );

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  • Does a child control inherit its parents properties of the same name

    - by Dave Colwell
    Hi all, simple question regarding property value inheritance in UserControls. If i create a UserControl, it has some standard properties like Background, BorderBrush and BorderThickness. Within that UserControl i have a border. I want to know, if i dont specify any set value or binding for the property BorderBrush of that border, will it automatically inherit the value of BorderBrush from the parent control? Thanks!

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  • Best way to use the same HTML on static web-pages

    - by John
    If you use dynamic pages like JSP or asp.net, you can have your page template included, and then content added. But what if you have no server-side component and all pages are just HTML/JS? You can of course create a template then copy it for each page, but then if you want to change something you risk having to modify every page, even if you put most styling in CSS properly. Are there any non-awful ways to do this? I could see that an iframe could be used to load the content into the central page but that sounds nasty. Does HTML provide any way to include a base file and add to it?

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  • What are the standard practices for throwing Javascript Exceptions?

    - by T.R.
    w3schools says that exceptions can be strings, integers, booleans, or objects, but the example given doesn't strike me as good practice, since exception type checking is done through string comparison. Is this the preferred method of exception handling in Javascript? Are there built-in exception types (like NullPointerException)? (if so, what are they, what kind of inheritance do they use, and are they preferred over other options?)

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  • Are C++ Templates just Macros in disguise?

    - by Roddy
    I've been programming in C++ for a few years, and I've used STL quite a bit and have created my own template classes a few times to see how it's done. Now I'm trying to integrate templates deeper into my OO design, and a nagging thought keeps coming back to me: They're just a macros, really... You could implement (rather UGLY) auto_ptrs using #defines, if you really wanted to. This way of thinking about templates helps me understand how my code will actually work, but I feel that I must be missing the point somehow. Macros are meant evil incarnate, yet "template metaprogramming" is all the rage. So, what ARE the real distinctions? and how can templates avoid the dangers that #define leads you into, like Inscrutable compiler errors in places where you don't expect them? Code bloat? Difficulty in tracing code? Setting Debugger Breakpoints?

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  • How would one call std::forward on all arguments in a variadic function?

    - by Noah Roberts
    I was just writing a generic object factory and using the boost preprocessor meta-library to make a variadic template (using 2010 and it doesn't support them). My function uses rval references and std::forward to do perfect forwarding and it got me thinking...when C++0X comes out and I had a standard compiler I would do this with real variadic templates. How though, would I call std::forward on the arguments? template < typename ... Params void f(Params ... params) // how do I say these are rvalue reference? { y(std::forward(...params)); //? - I doubt this would work. } Only way I can think of would require manual unpacking of ...params and I'm not quite there yet either. Is there a quicker syntax that would work?

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