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  • Efficiency of PHP arrays cast as objects?

    - by keithjgrant
    From what I understand, PHP objects are generally much faster than arrays. How is that efficiency affected if I'm typecasting to define stdClass objects on the fly: $var = (object)array('one' => 1, 'two' => 2); If the code doing this is deeply-nested, will I be better off explicitly defining $var as an objects instead: $var = new stdClass(); $var->one = 1; $var->two = 2; Is the difference negligible since I'll then be accessing $var as an object from there on, either way?

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  • Can I override spring beans instatiated with component scanning?

    - by Pablojim
    If I use component scanning in Spring 2.5 but then also define a controller in xml. Do I get two instances of this bean in my application context? If so which instance will be called for its related RequestMappings? <bean id="myController" class="domain.MyController"> <property name="filters"> <list> <ref local="filter1"/> <ref local="filter2"/> </list> </property> </bean>

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  • Binding Properties.Settings to Textbox fails

    - by user268098
    I would like to define a key & value in Settings.settings and bind the value by declaration in the XAML (not in the code behind by command). Here's what I've been trying in vain: Create a WPF project "Exp1" with Visual Studio Express 2010. Set one key named "TextFromSettings" to the value "Some Text from Setting". Add the attribute xmlns:p="clr-namespace:Exp1.Properties;assembly=Exp1" to the tag. Add Text="{Binding Path=TextFromSettings, Mode=TwoWay, Source={x:Static p:Settings.Default}}" to the tag Now, the preview window shows the text, however, the compiler fails: "Error 1 Cannot find the type 'Settings'. Note that type names are case sensitive." Where am I going wrong?

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  • prevent using functions before initialization, constructors-like in C

    - by Hernán Eche
    This is the way I get to prevent funA,funB,funC, etc.. for being used before init #define INIT_KEY 0xC0DE //any number except 0, is ok static int initialized=0; int Init() { //many init task initialized=INIT_KEY; } int funA() { if (initialized!=INIT_KEY) return 1 //.. } int funB() { if (initialized!=INIT_KEY) return 1 //.. } int funC() { if (initialized!=INIT_KEY) return 1 //.. } The problem with this approach is that if some of those function is called within a loop so "if (initialized!=INIT_KEY)" is called again, and again, although it's not necessary. It's a good example of why constructors are useful haha, If it were an object I would be sure that when was created initialization was called, but in C, I don't know how to do it. Any other ideas are welcome!

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  • Model in sub-directory via app_label?

    - by prometheus
    In order to place my models in sub-folders I tried to use the app_label Meta field as described here. My directory structure looks like this: project apps foo models _init_.py bar_model.py In bar_model.py I define my Model like this: from django.db import models class SomeModel(models.Model): field = models.TextField() class Meta: app_label = "foo" I can successfully import the model like so: from apps.foo.models.bar_model import SomeModel However, running: ./manage.py syncdb does not create the table for the model. In verbose mode I do see, however, that the app "foo" is properly recognized (it's in INSTALLED_APPS in settings.py). Moving the model to models.py under foo does work. Is there some specific convention not documented with app_label or with the whole mechanism that prevents this model structure from being recognized by syncdb?

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  • C++ context menu image at left side showing partially, no fully

    - by Samir
    In C++ #define BITMAP_MAIN 201 //in resource.h BITMAP_MAIN BITMAP "main.bmp" // in .rc file // showing icon in menu... HBITMAP imgMain = LoadBitmap( aHinstance, MAKEINTRESOURCE(BITMAP_MAIN) ); SetMenuItemBitmaps ( hSubmenu, uMenuIndex, MF_BYPOSITION, imgMain, imgMain); The problem is in non-English XP OS the main.bmp is showing partially in the context menu. In Vista, Window7 main.bmp is showing just fine. Also in English XP its ok. But why the image is not showing fully in non-English XP? How would I use .ico file here instead of .bmp? This is to make the image transparent.

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  • Database design: How should I add an information which can apply to several tables

    - by Stefan
    I am constructing a database System using Mysql, this will be an application of about 20 tables. The system contains information on farmers, we work with organic certification and need to record a lot of info for that. In my system, there are related parent-child tables for farmers, producing years and fields/areas - it's a simple representation of the real world in which farmers farm crops on their fields. I now need to add several status flags for each one of these levels: a farmer can be certified, or his field can be, or the specific year can be; each of these flags has several states and can occur a number of times. The obvious solution to this would be to add a child table to every one of these tables, and define the states there. What I wonder if there is an easier way to do this to avoid getting to many tables? Where/how would be best practise to keep that data?

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  • How to correctly and standardly compare floats?

    - by DIMEDROLL
    Every time I start a new project and when I need to compare some float or double variables I write the code like this one: if (fabs(prev.min[i] - cur->min[i]) < 0.000001 && fabs(prev.max[i] - cur->max[i]) < 0.000001) { continue; } Then I want to get rid of these magic variables 0.000001(and 0.00000000001 for double) and fabs, so I write an inline function and some defines: #define FLOAT_TOL 0.000001 So I wonder if there is any standard way of doing this? May be some standard header file? It would be also nice to have float and double limits(min and max values)

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  • Creating Ada record with one field

    - by ada hater
    I've define a type: type Foo is record bar : Positive; end record; I want to create a function that returns an instance of the record: function get_foo return Foo is return (1); end get_foo; But Ada won't let me, saying "positional aggregate cannot have one argument". Stupidly trying, I've added another dumb field to the record, and then return (1, DOESNT_MATTER); works! How do I tell Ada that's not a positional aggregate, but an attempt to create a record?

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  • Android TimeSqaureCalender

    - by Jack Lebbos
    i have searched for calendar libraries and i have found TimeSquare calender on this site https://github.com/square/android-times-square ive downloaded the file and add made an import for the folder in ecilipse and everithing worked fine then i have exported with gradle and imported in android studio and everything worked fine.THE problem is that i want to use this calender in an app i'm developping so i have added folder library as a module and synced with grade but when i define <com.squareup.timessquare.CalendarPickerView android:id="@+id/calendar_view" android:layout_width="match_parent" android:layout_height="match_parent" /> just in xml and run the app it crashes on setcontentview and i cannot make anything in plus can somebody tell me how to use this library correctly.

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  • How to make a file with .pt extension, with xml syntax highlighting and vim's plugin snipmate load p

    - by Somebody still uses you MS-DOS
    I have the following in my .vimrc: au BufNewFile,BufRead *.pt set filetype=xml This is needed because although I'm editing a file with *.pt extension, it's indeed a valid xml file: setting the filetype like this I can have syntax highlighting. I'm using vim's snipmate plugin, and tried to create pt.snippets to specific needs since these files are Zope Page Templates (ZPT with TAL). Now, I have a problem: I don't want to create these snippets in xml.snippets, since they aren't really generic xml snippets, but my *.pt files are set to xml, so when I define my pt snippets they aren't loaded unless I run :set filetype=pt on my pt file on vim - but then I lose syntax highlighting. I would like to be able to have a pt file, with xml syntax highlighting, to be able to load a pt.snippets file from snipmate. How can I do it? (I would like to avoid putting my snippets in a generic snippet file, I would like it to be present only in pt.snippets to be easier to maintain.)

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  • Programatically opening an xml file in MS Word

    - by Dan Revell
    I'm opening an xml file in Microsoft Word 2007 using C#. I'm using an xsl file to define the layout which worked up to the point that I needed to include an image. I used the typical src html tag and the image displays when the xml is viewed in ie but not when it's opened in Word. I get the image place holder so I can only assume Word simply can't find the image. It's sitting next to both the xml file and xsl file but that doesn't make any difference. To open the document I'm passing the filenames for both the xml and xsl. I would imagine that as the src is in the xsl it would just look relative to one of these files. Any suggestions would be much appreciated. [EDIT] Apologies I lost track of this one. I fixed it in the end. I'll check what my solution was tomorrow and update this.

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  • How to create a new IDA project based on an existing one with different offsets?

    - by tbergelt
    I have an existing IDA Pro project for a C166 processor embedded application. This project already has many functions, variables, etc defined. There are different versions of the embedded application I am looking at. The different versions of the application are 99% the same, but with slight variations in code and data that cause functions and variables to be at different memory offsets. I want to create a new IDA project for a different version of the application. I would like to somehow import all of my function and variable definitions from my existing IDA project. I would like IDA to recognize the signatures of the existing function definitions and define them at there new location in the new project. How can I do this? Are there certain plugins for IDA I can chain together?

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  • Repurpose builtin Word commands - access original command within repurposed function

    - by Aurril
    It is possible to repurpose a Word builtin command in Word 2007 using the customUI.xml file. Example: <customUI xmlns="http://schemas.microsoft.com/office/2009/07/customui"> <commands> <command idMso="Save" onAction="MySave"/> </commands> </customUI> I then have to define a callback function in VBA which is used instead of the builtin function: 'Callback for Save onAction Sub MySave(control As IRibbonControl, ByRef cancelDefault) someFancyPreparationFunction oldSaveFunction ' Where, how? someOtherFancyAfterWorkFunction End Sub And here is my problem, if I want to reuse internal functionality in my repurposed Function, I don't know how to access it. My example is trivial and the save could be easily rebuilt by a call to ThisDocument.save but as I said, it is just an example to show the problem. A call to CommandBars.ExecuteMso('Save') would call my repurposed function and not the original one. Any ideas on how to access the internal functionality after repurposing would be very appreciated!

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  • Do we really need a safe release macro?

    - by Ian1971
    Quite a lot of people seem to use a macro such as #define SAFE_RELEASE(X) [X release]; X = nil; (myself included). I've been reassessing why I am using it and wanted to canvas some opinion. The purpose (I think) for using this macro is so that if you were to accidentally use your object after releasing it then you won't get a bad access exception because objective-c will quite happily ignore it when the object is nil. It strikes me that this has the potential to mask some obscure bugs. Maybe it would actually be preferable for the program to crash when you try to use X again. That way during testing you can find the issue and improve the code. Does this macro encourage lazy programming? Thoughts?

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  • C++ -- How can we call "delete this; " in a const-member function?

    - by q0987
    Hello all, I saw the code snippet as follows: class UPNumber { public: UPNumber(); UPNumber(int initValue); ... // pseudo-destructor (a const member function, because // even const objects may be destroyed) void destroy() const { delete this; } // why this line is correct??? ... private: ~UPNumber(); }; First, I am sure that above class definition is correct. Here is my question, why we can define the function 'destroy' as above? The reason being asking is that why we can modify 'this' in a const-member function? Thank you

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  • C++ (g++) Compile Error, Expected "="/etc. Before 'MyWindow" (my class name)

    - by Ell
    Hi all, I have a very strange problem and the following code wont compile: #ifndef MYWINDOW_HPP_INCLUDED #define MYWINDOW_HPP_INCLUDED class MyWindow{ private: WNDCLASSEX window_class; HWND window_handle; HDC device_context_handle; HGLRC open_gl_render_context; MSG message; BOOL quit; public: Window(int height=416, int width=544, WindowStyle window_style=WINDOWED); void Show(); void Close(); ~Window(); }; #endif // MYWINDOW_HPP_INCLUDED I get the following error: error: expected '=', ',', ';', 'asm' or 'attribute' before 'MyWindow' I can't see any syntax errors here, although I coukd be wrong as I am very (very) new in c++. Thanks in advance, ell.

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  • static const double in c++

    - by Crystal
    Is this the proper way to use a static const variable? In my top level class (Shape) #ifndef SHAPE_H #define SHAPE_H class Shape { public: static const double pi; private: double originX; double originY; }; const double Shape::pi = 3.14159265; #endif And then later in a class that extends Shape, I use Shape::pi. I get a linker error. I moved the const double Shape::pi = 3.14... to the Shape.cpp file and my program then compiles. Why does that happen? thanks.

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  • Getting text from a URL in ASP.NET

    - by user102533
    I am looking for a reliable way of extracting text given the web address, in ASP.NET/C#. Can anyone point me the right direction? Also, the web address could be say a news site that might have a lot of ads and menus etc. I need some intelligent way of extracting only the relevant content. Not sure how this could be done as how would I define what relevance is? Should I maybe read from a RSS feed? Any thoughts on this?

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  • Expected specifier-qualifier-list before 'CGPoint'

    - by Rob
    My project compiles and runs fine unless I try to compile my Unit Test Bundle it bombs out on the following with an "Expected specifier-qualifier-list before 'CGPoint'" error on line 5: #import <Foundation/Foundation.h> #import "Force.h" @interface WorldObject : NSObject { CGPoint coordinates; float altitude; NSMutableDictionary *forces; } @property (nonatomic) CGPoint coordinates; @property (nonatomic) float altitude; @property (nonatomic,retain) NSMutableDictionary *forces; - (void)setObject:(id)anObject inForcesForKey:(id)aKey; - (void)removeObjectFromForcesForKey:(id)aKey; - (id)objectFromForcesForKey:(id)aKey; - (void)applyForces; @end I have made sure that my Unit Test Bundle is a target of my WorldObject.m and it's header is imported in my testing header: #define USE_APPLICATION_UNIT_TEST 1 #import <SenTestingKit/SenTestingKit.h> #import <UIKit/UIKit.h> #import "Force.h" #import "WorldObject.h" @interface LogicTests : SenTestCase { Force *myForce; WorldObject *myWorldObject; } @end

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  • Can I configure Eclipse / JBoss integration so it does not rely on deploying Jars to the "server/def

    - by kellyfj
    I am using MyEclipse 7.5 with JBoss 4.2.3 GA. When I define my local development JBoss server in MyEclipse it always wants to deploy jars, wars etc. to the "server/default/deploy" directory. Unfortunately our JBoss directory structure for production is "server/XYZ/deploy/abc" (driven by a third party). As a result our Dev JBoss instances are different from our QA/Staging/Production JBoss instances. Is there a way to configure Eclipse to use JBoss but deploy to that specific folder path "server/XYZ/deploy/abc" rather than the default one "server/default/deploy"?

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  • How do I wrap this BAIL macro in Xcode?

    - by willc2
    I use this little snippet to halt my iPhone app in the simulator. NSAssert((0), @"Bail early while testing"); When I try to make it a #defined macro like this: #define BAILNOW (NSAssert((0), @"Bail early while testing")) I get this build error: error: expected expression before 'do' It seems to be related to the nesting of the NSAssert() macro but I'm at a loss as to how to get around it. Should I dig into the NSAssertionHandler docs or is there some simpler way to halt the app in it's tracks? Or should I just set a breakpoint and get on with my life?

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  • MinGW screw up with COLORREF and RGB

    - by kjoppy
    I am trying to build a 3rd party open source project using MinGW. One of the dependencies is wxWidgets. When I try to make the project from MSYS I get a compiler error from /MinGW/msys/1.0/local/include/wx-2.8/wx/msw/private.h In function 'COLORREF wxColourToRGB(const wxColour&)': error: cannot convert 'RGB' to 'COLORREF {aka long unsigned in}' in return This is somewhat odd given that, according to Microsoft the RGB macro returns a COLORREF. In fact, looking in H:\MinGW\include I find wingdi.h with the following code #define RGB(r,g,b) ((COLORREF)((BYTE)(r)|((BYTE)(g) << 8)|((BYTE)(b) << 16))) What sort of thing would cause this error? Is there some way I can check to see if COLORREF and RGB are being included from wingdi.h and not somewhere else? Is that even worth checking? Specifications GCC version 4.7.2 wxWidgets version 2.8.12 (I'm new to C++ and MinGW specifically but generally computer and programming literate)

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  • Javascript recursive data structure definition

    - by Matt Bierner
    I need to define a data structure recursively in Javascript. Here is a simple example of a circular linked list: // List a very simplified example of what the actual (non list) code does. function List(f, r) { return function(){ return [f, r]; }; } var head = List('a', List('b', List('c', head))); When this is executed, head in List 'c' is resolved to undefined, not List 'a' as I need. List is an example function that returns a function (It is not an Javascript list that I can append to). I tried to wrap the definition of head is a self executing named function, but that blew the stack when head was resolved. What is the Javascript style solution that I am overlooking?

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  • How do I separate functionality with Javascript code to set Timeout?

    - by GIVE-ME-CHICKEN
    I have the following code: var comparePanel = $(__this.NOTICE_BODY); clearTimeout(__this._timeout); comparePanel.addClass(__this.VISIBLE); __this._timeout = setTimeout(function () { comparePanel.removeClass(__this.CL_VISIBLE); }, 3000); } }) The following has been repeated a few times: __this._timeout = setTimeout(function () { comparePanel.removeClass(__this.CL_VISIBLE); }, 3000); I want to be able to do something like this: __this._timeout = setTimeout(comparePanel, 3000); How do I define and call that function? PS. I am very very new to JavaScript so any explanation of what is going on is greatly appreciated.

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