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  • Class inheritance in PHP 5.2: Overriding static variable in extension class?

    - by Christoffer
    Hi, I need to bea be able to use a static variable set in a class that extends a base class... from the base class. Consider this: class Animal { public static $color = 'black'; public static function get_color() { return self::$color; } } class Dog { public static $color = 'brown'; } echo Animal::get_color(); // prints 'black' echo Dog::get_color(); // also prints 'black' This works wonderfully in PHP 5.3.x (Dog::get_color() prints 'brown') since it has late static binding. But my production server runs PHP 5.2.11 and so I need to adapt my script. Is there a somewhat pretty workaround to solve this issue? Cheers! Christoffer

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  • What are the implications of using static const instead of #define?

    - by Simon Elliott
    gcc complains about this: #include <stdio.h> static const int YY = 1024; extern int main(int argc, char*argv[]) { static char x[YY]; } $ gcc -c test1.c test1.c: In function main': test1.c:5: error: storage size of x' isn't constant test1.c:5: error: size of variable `x' is too large Remove the “static” from the definition of x and all is well. I'm not exactly clear what's going on here: surely YY is constant? I had always assumed that the "static const" approach was preferable to "#define". Is there any way of using "static const" in this situation?

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  • c# class design - what can I use instead of "static abstract"?

    - by Ryan
    I want to do the following public abstract class MyAbstractClass { public static abstract int MagicId { get; } public static void DoSomeMagic() { // Need to get the MagicId value defined in the concrete implementation } } public class MyConcreteClass : MyAbstractClass { public static override int MagicId { get { return 123; } } } However I can't because you can't have static abstract members. I understand why I can't do this - any recommendations for a design that will achieve much the same result? (For clarity - what I am trying to do is provide a library with an abstract base class but the concrete versions MUST implement a few properties/methods themselves and yes, there are good reasons for keeping it static.)

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  • How to address thread-safety of service data used for maintaining static local variables in C++?

    - by sharptooth
    Consider the following scenario. We have a C++ function with a static local variable: void function() { static int variable = obtain(); //blahblablah } the function needs to be called from multiple threads concurrently, so we add a critical section to avoid concurrent access to the static local: void functionThreadSafe() { CriticalSectionLockClass lock( criticalSection ); static int variable = obtain(); //blahblablah } but will this be enough? I mean there's some magic that makes the variable being initialized no more than once. So there's some service data maintained by the runtime that indicates whether each static local has already been initialized. Will the critical section in the above code protect that service data as well? Is any extra protection required for this scenario?

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  • How to connect a WordPress contact form to another database which uses a form script on a static site?

    - by eirlymeyer
    Static Site B has two separate contact form scripts. One script processes leads via a script developed using Cold Fusion. Another script processes leads via a script using MySql Database. New Site A is being developed using WordPress. How do I use a WordPress Contact Form plug-in to integrate these two scripts (built on ColdFusion, and uses the existing MySQL database) to ensure the same functionality and processing of leads.

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  • What does the impression and ctr means in google webmaster

    - by KoolKabin
    I am checking google webmaster tools. I entered the search queries section. There i found alot keywords and their impression and ctr etc. I clicked on one of the query keyword there it shows the keyword and position in search result, but when i go to google.com and type the specified keyword it shows no impressions too... how do i measure find my site's impression on google.com my site: http://www.trekkingandtoursnepal.com keyword: trekking nepal

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  • What does the impression and ctr means in google webmaster

    - by KoolKabin
    I am checking google webmaster tools. I entered the search queries section. There i found alot keywords and their impression and ctr etc. I clicked on one of the query keyword there it shows the keyword and position in search result, but when i go to google.com and type the specified keyword it shows no impressions too... how do i measure find my site's impression on google.com my site: http://www.trekkingandtoursnepal.com keyword: trekking nepal

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  • Why are only some of my objects being rendered?

    - by BleedObsidian
    Every time I create a new asteroid the previous one is no longer rendered? I did some debugging and printed out the size of Array-List 'Small' and when a new asteroid is created it doesn't go down, so the thread is still there it's just not being rendered, Why? StatePlay: package me.bleedobsidian.astroidjump; import org.newdawn.slick.GameContainer; import org.newdawn.slick.Graphics; import org.newdawn.slick.SlickException; import org.newdawn.slick.state.BasicGameState; import org.newdawn.slick.state.StateBasedGame; public class StatePlay extends BasicGameState { int stateID = 10; Player player; Asteroids asteroids; StatePlay(int stateID) { this.stateID = stateID; } @Override public int getID() { return stateID; } @Override public void init(GameContainer gc, StateBasedGame sbg) throws SlickException { ResManager.loadImages(); player = new Player(); asteroids = new Asteroids(); } @Override public void render(GameContainer gc, StateBasedGame sbg, Graphics g) throws SlickException { g.setAntiAlias(true); player.render(g); asteroids.render(g); g.drawString("Asteroids: " + Asteroids.small.size(), 10, 25); } @Override public void update(GameContainer gc, StateBasedGame sbg, int delta) throws SlickException { player.update(gc, delta); asteroids.update(delta); } } Asteroids: package me.bleedobsidian.astroidjump; import java.util.ArrayList; import java.util.Timer; import org.newdawn.slick.Graphics; import org.newdawn.slick.Image; import org.newdawn.slick.SpriteSheet; public class Asteroids { public static ArrayList<Asteroid_Small> small = new ArrayList<Asteroid_Small>(); static SpriteSheet small_sprites = new SpriteSheet(ResManager.asteroids_small_ss, 32, 32); static Image small_1 = small_sprites.getSubImage(0, 0); static Image small_2 = small_sprites.getSubImage(1, 0); static Image small_3 = small_sprites.getSubImage(2, 0); static Image small_4 = small_sprites.getSubImage(3, 0); static boolean asteroids = true; static int diff = 0; Asteroids() { Task_Asteroids TaskA = new Task_Asteroids(); Timer timer = new Timer("Asteroids"); if(diff == 0) { timer.schedule(TaskA, 0, 4000); } else if(diff == 1) { timer.schedule(TaskA, 0, 3000); } } public static Image chooseSmallImage(int i) { if(i == 0) { return small_1; } else if(i == 1) { return small_2; } else if(i == 2) { return small_3; } else if(i == 3) { return small_4; } else { return small_1; } } public static void level_manager(float x) { if(x < 1000) { diff = 0; } else if(x < 2000) { diff = 1; } else if(x < 3000) { diff = 2; } else if(x < 5000) { diff = 3; } else if(x < 10000) { diff = 4; } else { diff = 5; } } public void update(int delta) { for(int s = 0; s < small.size(); s++) { Asteroid_Small as = small.get(s); as.update(delta); } } public void render(Graphics g) { for(int s = 0; s < small.size(); s++) { Asteroid_Small as = small.get(s); as.render(g); } } public static void setAsteroids(boolean tf) { asteroids = tf; } } Asteroid_Small: package me.bleedobsidian.astroidjump; import org.newdawn.slick.Graphics; import org.newdawn.slick.Image; public class Asteroid_Small { private static Image me; private static float x = 0; private static float y = 0; private static float speed = 0; private static float rotation = 0; private static float rotation_speed = 0; Asteroid_Small(Image i, float x, float y, float rs, float sp) { me = i; Asteroid_Small.x = x; Asteroid_Small.y = y; Asteroid_Small.rotation_speed = rs; Asteroid_Small.speed = sp; } public void update(int delta) { x -= speed * delta; rotation += rotation_speed * delta; me.setRotation(rotation); } public void render(Graphics g) { g.drawImage(me, x, y); } } Task_Asteroid: package me.bleedobsidian.astroidjump; import java.util.TimerTask; public class Task_Asteroids extends TimerTask { public void run() { if(Asteroids.diff == 0) { int randImage = (int) (Math.random() * 4); int randHeight = (int) (Math.random() * 480); Asteroids.small.add(new Asteroid_Small(Asteroids.chooseSmallImage(randImage), Player.x + 960, randHeight, 0.05f, 0.04f)); } } }

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  • How to name a static factory method in the utility class?

    - by leventov
    I have an interface MyLongNameInterface with a counterpart utility class MyLongNameInterfaces. What is the best name for a static factory method in the utility class, which creates an instance of MyLongNameInterface? MyLongNameInterfaces.newInstance() -- a new instance of the utility class? MyLongNameInterfaces.newMyLongNameInterface() -- too verbose MyLongNameInterfaces.create() -- create an instance of the utility class? Also, create is not a widely used conventional verb in Java better option?

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  • The Importance of Cousin Keywords

    Although almost everybody knows what a keyword is, far fewer people have ever heard the term "cousin keyword." Cousin keywords are simply keywords with a relationship to the site main keyword (KW), but are usually less competitive. These keywords lack the amount of traffic obtained by the primary keyword and so have less income potential.

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  • The Importance of Cousin Keywords

    Although almost everybody knows what a keyword is, far fewer people have ever heard the term "cousin keyword." Cousin keywords are simply keywords with a relationship to the site main keyword (KW), but are usually less competitive. These keywords lack the amount of traffic obtained by the primary keyword and so have less income potential.

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  • How to do 'search for keyword in files' in emacs in Windows without cygwin?

    - by Anthony Kong
    I want to search for keyword, says 'action', in a bunch of files in my Windows PC with Emacs. It is partly because I want to learn more advanced features of emacs. It is also because the Windows PC is locked down by company policy. I cannot install useful applications like cygwin at will. So I tried this command: M-x rgrep It throws the following error message: *- mode: grep; default-directory: "c:/Users/me/Desktop/Project" -*- Grep started at Wed Oct 16 18:37:43 find . -type d "(" -path "*/SCCS" -o -path "*/RCS" -o -path "*/CVS" -o -path "*/MCVS" -o -path "*/.svn" -o -path "*/.git" -o -path "*/.hg" -o -path "*/.bzr" -o -path "*/_MTN" -o -path "*/_darcs" -o -path "*/{arch}" ")" -prune -o "(" -name ".#*" -o -name "*.o" -o -name "*~" -o -name "*.bin" -o -name "*.bak" -o -name "*.obj" -o -name "*.map" -o -name "*.ico" -o -name "*.pif" -o -name "*.lnk" -o -name "*.a" -o -name "*.ln" -o -name "*.blg" -o -name "*.bbl" -o -name "*.dll" -o -name "*.drv" -o -name "*.vxd" -o -name "*.386" -o -name "*.elc" -o -name "*.lof" -o -name "*.glo" -o -name "*.idx" -o -name "*.lot" -o -name "*.fmt" -o -name "*.tfm" -o -name "*.class" -o -name "*.fas" -o -name "*.lib" -o -name "*.mem" -o -name "*.x86f" -o -name "*.sparcf" -o -name "*.dfsl" -o -name "*.pfsl" -o -name "*.d64fsl" -o -name "*.p64fsl" -o -name "*.lx64fsl" -o -name "*.lx32fsl" -o -name "*.dx64fsl" -o -name "*.dx32fsl" -o -name "*.fx64fsl" -o -name "*.fx32fsl" -o -name "*.sx64fsl" -o -name "*.sx32fsl" -o -name "*.wx64fsl" -o -name "*.wx32fsl" -o -name "*.fasl" -o -name "*.ufsl" -o -name "*.fsl" -o -name "*.dxl" -o -name "*.lo" -o -name "*.la" -o -name "*.gmo" -o -name "*.mo" -o -name "*.toc" -o -name "*.aux" -o -name "*.cp" -o -name "*.fn" -o -name "*.ky" -o -name "*.pg" -o -name "*.tp" -o -name "*.vr" -o -name "*.cps" -o -name "*.fns" -o -name "*.kys" -o -name "*.pgs" -o -name "*.tps" -o -name "*.vrs" -o -name "*.pyc" -o -name "*.pyo" ")" -prune -o -type f "(" -iname "*.sh" ")" -exec grep -i -n "action" {} NUL ";" FIND: Parameter format not correct Grep exited abnormally with code 2 at Wed Oct 16 18:37:44 I believe rgrep tried to spwan a process and called 'FIND' with all the parameters. However, since it is a Windows, the default Find executable simply does not know how to handle. What is the better way to search for a keyword in multiple files in Emacs on Windows platform, without any dependency on external programs? Emacs version: 24.2.1

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  • How do you do a keyword search the Services.msc (mmc) window in Windows 7?

    - by Warren P
    When you want to run a service, you have very limited capabilities, in all current Windows versions, as far as I can tell. I usually start Services by typing "services.msc" into the Start-Run box, on most versions of Windows, this works. I know how to click the "Name" column in the MMC view of Windows Services. If you know what the first few characters of a service name is, you can usually sort by the name, and type the prefix to scroll the list down (find Windows Search for example). This seems pretty weak to me, so I spent some time searching the interwebs for tools that do a better job of managing services. Usually I have a keyword that I know "fooWare" might be the keyword, and I need to find the (usually badly named) service and start it and stop it. This is often WAY too hard. The best I could do is "NET SERVICES" from the command line, and maybe add a grep in there, but that doesn't list every service, only a few of them. And the MMC snap-in in Win7 now has an Export List button, exporting to csv text file feature which I have used from time to time, to export and then search. I have thought of writing my own tool. I'm hoping a better "service manager" utility exists out there that sysadmins use. I'd like a search box at the top right corner, kind of the same way that the Add-Remove-Programs dialog in Win7 and Vista has a search facility. Does such a services utility exist out there?

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  • Having trouble running code analysis from command prompt with msbuild

    - by devlife
    I'm using VS2010 RC while targeting .NET 3.5. I can run code analysis via Visual Studio without a problem. However, when I try to run code analysis on our CI server it isn't getting executed. When I attempt to build using msbuild 4.0 I get the following exception: C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\v10.0\CodeAnalysis\Microsoft.CodeAnalysis.targets(129,9): error MSB4018: The "CodeAnalysis" task failed unexpectedly. C:\Program Files (x86)\MSBuild\Microsoft\VisualStudio\v10.0\CodeAnalysis\Microsoft.CodeAnalysis.targets(129,9): error MSB4018: System.TypeLoadException: Could not load type 'System.Runtime.Versioning.TargetFrameworkAttribute' from assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 Like I said, it works fine when I run it through VS.

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  • Figuring Out Memory Leaks without Clang

    - by RoLYroLLs
    I'm trying to see if I can find some leaks myself in Apple's TopSongs app. Can someone help me out in at least one and how to identify what is in the Leaks reports and how I can get an idea on finding them? ie: I got one like this: # Category Event Type Timestamp Address Size Responsible Library Responsible Caller 0 GeneralBlock-448 Malloc 00:02.185 0x3f41220 448 libxml2.2.dylib xmlNewParserCtxt From what I can tell, the method xmlNewParserCtxt is the problem, and it's not releasing an object, hence Malloc. The responsible library tells me it's the libxml2.2.dylib library with the problem, which I can't edit. Am I heading in the right direction? If so, half the leaks are in that library and well, i can't edit that.

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  • Using CHDataStructures.framework on iPhone

    - by nununo
    Hi, I'm new to iPhone programming and I'm trying to use CHDataStructures in my project. But I'm running into some issues: When I directly try to build it right after download I get the error "Foundation/Foundation.h" no such file or directory. The Active SDK is "Use Base SDK" and the active architecture is x86_64. I believe I should set the Active SDK to the iPhone SDK but it isn't listed there; At some point (I don't remember how) I managed to tweak it and I got the iPhone SDK (simulator) in the active SDK but when I tried to build it I got the following error: "target specifies product type 'com.apple.product-type.framework', but there's no such product type for the 'iphonesimulator' platform"; And now I'm stuck. What am I doing wrong? Thanks in advance, Nuno

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  • CLang error (objective C): value stored during initialization is never read

    - by Scott Pendleton
    Foo *oFoo = [[[Foo alloc] init] autorelease]; This is how I was taught to program in Objective C, yet the CLang error checker complains that the initial value was never read. But oFoo is an object with properties. oFoo itself has no single value. The property values are what matter. oFoo.PropertyA = 1; oFoo.PropertyB = @"Hello, World." Should I just ignore this? Is this worth fixing? What is the fix, seeing that "initial value" is meaningless in my context?

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  • What is the correct way to synchronize a shared, static object in Java?

    - by johnrock
    This is a question concerning what is the proper way to synchronize a shared object in java. One caveat is that the object that I want to share must be accessed from static methods. My question is, If I synchronize on a static field, does that lock the class the field belongs to similar to the way a synchronized static method would? Or, will this only lock the field itself? In my specific example I am asking: Will calling PayloadService.getPayload() or PayloadService.setPayload() lock PayloadService.payload? Or will it lock the entire PayloadService class? public class PayloadService extends Service { private static PayloadDTO payload = new PayloadDTO(); public static void setPayload(PayloadDTO payload){ synchronized(PayloadService.payload){ PayloadService.payload = payload; } } public static PayloadDTO getPayload() { synchronized(PayloadService.payload){ return PayloadService.payload ; } } ... Is this a correct/acceptable approach ? In my example the PayloadService is a separate thread, updating the payload object at regular intervals - other threads need to call PayloadService.getPayload() at random intervals to get the latest data and I need to make sure that they don't lock the PayloadService from carrying out its timer task

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  • Error when using StaticResource

    - by James Hay
    Hi, I'm getting this error Attribute {StaticResource StoryboardIntroAnimation} value is out of range when I try and use a staic resource as the Storyboard property of a BeginStoryboard object. The markup looks a little like this: <UserControl ...> <UserControl.Resources> <Storyboard x:Key="StoryboardIntroAnimation"> ... </Storyboard> </UserControl.Resources> <UserControl.Triggers> <EventTrigger> <EventTrigger.Actions> <BeginStoryboard Storyboard="{StaticResource StoryboardIntroAnimation}" /> </EventTrigger.Actions> </EventTrigger> </UserControl.Triggers> ... </UserControl> Does anyone know why this is happening?

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  • Which Secure Software Development Practices do you Employ?

    - by Michael Howard-MSFT
    I work on a project known as the Security Development Lifecycle (SDL) project at Microsoft (http://microsoft.com/sdl) - in short it's a set of practices that must be used by product groups before they ship products to help improve security. Over the last couple of years, we have published a great deal of SDL documentation, as customers ask for more information about what we're doing. But what I'd like to know is: 1) What are you doing within your organization to help improve the security of your product? 2) What works? What doesn't work? 3) How did you get management to agree to this work? Thanks.

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  • Is there a compiled* programming language with dynamic, maybe even weak typing?

    - by sub
    I wondered if there is a programming language which compiles to machine code/binary (not bytecode then executed by a VM, that's something completely different when considering typing) that features dynamic and/or weak typing, e.g: Think of a compiled language where: Variables don't need to be declared Variables can be created doing runtime Functions can return values of different types Questions: Is there such a programming language? (Why) not? I think that a dynamically yet strong typed, compiled language would really sense, but is it possible?

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  • Filtering code elements when analyzing source code.

    - by Martin
    Hi everybody, Currently I am making a survey about source code analysis and the thing that puzzles me greatly is what is it that project managers and developers would like to filter when analyzing source code (especially when applying OOP metrics - e.g. skpping insignificant methods and classes during analysis or filtering context-based elements according to the type of project). If you have any suggestions based on yout experience with code analysis I will greatly appreciate if you can share some ideas about filtering of elements. Thanks, Martin

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