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• Quick question regarding Conditional Compilation (ifndef)

  - by sil3nt

  Hello, This is quite probably a very silly question but I need to be sure. I've been given a class declaration in a header file eg. #ifndef file_H #define file_H class ex{ private: public: }; #endif and I've been required to write the method definitions in the same file, which I have done, my question is does the "#endif" stay where it is just after the class declaration or does it go at the end of my file after the class method definitions?.

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• Putting 3 million pages in 1 folder vs. putting in a number of sub-folders, which structure is faste

  - by silent

  If I have 3 million pages, which directory structure is better? Method 1. ~/123456789.htm (Putting all the 3 million pages into the same folder without any sub folders) Method 2. ~/789/123456789.htm (Create 999 sub-folders, each sub-folder contains about 3000 pages) For Windows Server 2008, which folder structure is faster? (For file creation, reading and deletion)

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• thresholding to distinguish small features in noisy data

  - by Daniel

  Hi, I'm wondering what type of threshold would work well for distinguishing features that are very small (small in the xy sense) in comparison with the full spread, if that makes sense. The graythresh() function in Matlab that uses the Otsu method doesn't work too well for my data. Otsu is a clustering method where I think the # of pixels should be similar in each class, which is not the case for me so when I employ it I get a threshold that is way too small and falls well within a lot of the background noise that remains even after filtering.

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• returning a Void object

  - by Robert

  What is the correct way to return a Void type, when it isn't a primitive? Eg. I currently use null as below. interface B<E>{ E method(); } class A implements B<Void>{ public Void method(){ // do something return null; } }

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• What Design Pattern is this?

  - by 01

  I know that everything we do in programming can be described as design pattern(even abstract method has design pattern called template method) public class Guicer extends AbstractModule { private static Injector injector = Guice.createInjector(new Guicer()); public static void setInjector(Injector injector) { Guicer.injector = injector; } public static T getInstance(Class c) { return injector.getInstance(c); } @Override protected void configure() { } } What design patterns are used in this code?

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• very simple question but i am confused

  - by davit-datuashvili

  Suppose we have the following method (it is in c code): const char *bitap_search(const char *text, const char *pattern) My question is how can I compare text and pattern if they are char? This method is like a substring problem but I am confused a bit can I write in term of char such code? if (text[i]==pattern[i])?

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• Implementing GetHashCode

  - by dotnetdev

  Hi, What constitutes a good implementation of the GetHashCode method? I did some googling, and found some goodlines (MSDN) but it seems like the logic just manipulates two numbers stored as fields in the class. Is the actual logic this simple to implement this method?

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• JDBC: Does the connection break if i lose reference to the Connection object?

  - by wretrOvian

  Hi. If i have the following method - public static void C() { Connection con = DriverManager.getConnection(); .... // code return; } and i dont call con.close() , will the connection terminate automatically once the method returns?

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• best way to update client site data in GWT application

  - by bmscomp

  When getting data from the server to the client side in GWT application we need to refresh every period of time to get updates for data, I think this is not a good method because if consume lot of time and resources, just thinking about another method is amazing :), any one get a good and effeciant idea ??

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• Exception Specyfication.

  - by Knowing me knowing you

  Does Exception specyfication is a part of method signature? What I mean is: public void someMethod(String myString) throws IOException is 'throws IOException' a part of a signature of this method? Thanks

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• Methods and garbage collection

  - by cc

  I encountered this question in an interview: Is an object created inside of a method eligible for garbage collection after the method is finished? Is yes the correct answer?

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• DataOutputStream, does it lose some bits

  - by user308806

  hello, I'm writing a client server application, but I don't receive the same bytes at the client side when they are sent from the server side. At the server side I used .write(bytes[]) method. At the client side, I used .readFully(byte[]) method. Do you have any idea ?

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• Routing optional parameters with dashes in MVC

  - by Géza

  I've made an routing definition like this: routes.MapRoute("ProductSearch", "Search-{MainGroup}-{SubGroup}-{ItemType}", new { controller = "Product", action = "Search", MainGroup = "", SubGroup = "", ItemWebType = ""}); It is not working if the parameters are empty. Actually it resolves the url, so Url.Action method resolves the path "Search-12--" but the link is not working, so the GET of the page is not working With slashes it is working the Url.Action method makes "Search/12" "Search/{MainGroup}/{SubGroup}/{ItemType}" is it somehow possible to correct it?

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• question on NSUserDefault Class

  - by user174761

  I have value in 1 string for particular key. but NSUserDefault class method doesn't work properly and it doesn't set object of a string forkey . in short setobject forkey method is not working of NSUserDefault class. why is it so?

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• .NET Threading : How to wait for other thread to finish some task

  - by Alex Ilyin

  Assume I have method void SomeMethod(Action callback) This method does some work in background thread and then invokes callback. The question is - how to block current thread until callback is called ? There is an example bool finished = false; SomeMethod(delegate{ finished = true; }); while(!finished) Thread.Sleep(); But I'm sure there should be better way

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• Problem with thread after SCREEN_OFF in Android

  - by michael

  I’m doing an application that listens to the android.intent.action.SCREEN_OFF in a Service (if that matter) and then it is supposed to wait a few seconds and launch an action, I’ve tried a timer schedule method, thread and handler postDelay method but all of them seems to fail, they are never executed on a device, it seems like it’s being freezed/killed after phone is locked. It works on emulator and on device attached to USB, but never with device working on battery only, which actually is a main scenario. Do you know any solutions to this?

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• How do I get the type name of a generic type argument?

  - by Tomas Lycken

  If I have a method signature like public string myMethod<T>( ... ) How can I, inside the method, get the name of the type that was given as type argument? I'd like to do something similar to typeof(T).FullName, but that actually works...

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• Auto-register class methods using decorator

  - by adamk

  I want to be able to create a python decorator that automatically "registers" class methods in a global repository (with some properties). Example code: class my_class(object): @register(prop1,prop2) def my_method( arg1,arg2 ): # method code here... @register(prop3,prop4) def my_other_method( arg1,arg2 ): # method code here... I want that when loading is done, somewhere there will be a dict containing: { "my_class.my_method" : ( prop1, prop2 ) "my_class.my_other_method" : ( prop3, prop4 ) } Is this possible?

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• get Error Message

  - by pAkY88

  I have two servlet: first servlet is similar to a client and creates an HttpURLConnection to call the second servlet. I would like send a special error, formatted like a JSON object, so I call sendError method in this way: response.sendError(code, "{json-object}") But in the first servlet when I read error with getResponseMessage method I just get standard HTTP message and not my json object as a string. How I can get my json string?

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• “Function” calling inside store procedure

  - by idimba

  Hi, I have a big store procedure, that contains a lot of INSERTs. There're many INSERTS that almost identical - they're different by some parameter(s) (all INSERTs to the same table) Is there a way to create a function/method, to which I'll pass the above parameter(s) and the function/method will generate concrete INSERT's? Thanks

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• Route Values for Area (MVC3)

  - by Jim

  Hi, I am using areas in MVC version 3. My logoff and logon action methods are routing to the area, and I need them to route to the normal controller that is not in an area. I have tried the following host://AREA/CONTROLLER/METHOD instead of host://CONTROLLER/METHOD. @if(Request.IsAuthenticated) { <text>Welcome <b>@Context.User.Identity.Name</b> [ @Html.ActionLink("Log Off", "LogOff", "Account", new { area = "" }) ]</text> } else { @:[ @Html.ActionLink("Log On", "LogOn", "Account", new { area = "" }) ] }

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• How to instantiate a particular view controller with storyboard in iOS at early stage of loading?

  - by dmirkitanov

  When using tabs with storyboard in iOS 5, some of them may take quite a long time to initialize when switching to it (for example, a tab containing GLKViewController). This happens because an amount of work in viewDidLoad method in this controller could be very big. Is there a way to initialize particular view controller (and call it's viewDidLoad method) defined in the storyboard at early stage - when an application starts? Having done this, the delay should be eliminated.

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• Class with proprties that haven't been set

  - by koumides

  Hello there, I am creating a class in C# which eventually will be part of a library that other uses can use. A user of this class has to set some properties and then use a public method to retrieve the results. What shall I do when a user calls the method without setting all the properties? Throw exception and expect the user to catch it? Thanks

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• How to write 2 statements that differ just by Operator type in VB.NET

  - by Richard Bysouth

  Hi I have the following code sample, where the only difference between the 2 parts of the If statement is the less than/greater than operators. Is there a better way to write this? Could almost do with being able to define an Operator variable. If myVar = true Then Do While (X < Y) 'call Method A Loop Else Do While (X > Y) 'call Method A Loop End If thanks

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• Is it good practice to separate code into blocks?

  - by LM

  If I have a method that does multiple, related things, is it good practice to stick each "thing" that the method does into a seperate block? Ex. { int var //Code } { int var //More Code } It would help reduce the number of local variables, and make the code more readable, but I'm not sure if it's a good idea.

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