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• Try-Catch equivalent in Objective-C / xcode

  - by IIS7 Rewrite

  I get an app crash in main.m in my app and have no idea why the error is happening because xcode doesn't show me where the crash occurs, it shows me that it crashes at return UIApplicationMain(argc, argv ...) which tells me nothing. Is there a way to have in xcode / Objective-C the equivalent of a try/catch in Visual Studio to see exactly where…

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• how can we use AsynCallback method of web service in asp.net

  - by sameer

  Hi All, I was going through the proxy class which is generated using wsdl.exe found the asyncmethod like BeginAsynXXX() and EndAsyncXXX(). i understood how to utilize them on Windows application but i was wondering how can we use them in Web Application built using asp.net here is the code for web service client build as windows…

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• trace this java method

  - by Bader

  public static int ABC(int x, int y) { if(y==0) return(0); else return(x + ABC(x,y-1)); } /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub System.out.println(ABC(5,3)); }

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• Why does ANT tell me that JAVA_HOME is wrong when it is not?

  - by Ankur

  I get the error: C:\dev\ws\springapp\build.xml:81: Unable to find a javac compiler; com.sun.tools.javac.Main is not on the classpath. Perhaps JAVA_HOME does not point to the JDK. It is currently set to "C:\Program Files\Java\jre6" But I have clearly set my JAVA_HOME to be C:\Program Files\Java\jdk1.6.0_14 Where is ANT getting…

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• Explain this AS2 code?

  - by incrediman

  Why does this code trace 'undefined'? this.createEmptyMovieClip("myLoader",1); trace(this.myLoader); this too? this.createEmptyMovieClip("myLoader",1); trace(this["myLoader"]); (when the code is in the constructor of a class which extends MovieClip) But this code traces _level0.myLoader (code placed on main timeline) …

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• How to check if a file is a DLL?

  - by PierreBdR

  Given a file, I want to check if this is a DLL, or a shared object (Linux) or a dylib (Mac OS X), or something different. My main interest is differentiating executable and DLL on Linux and Mac OS X. For windows, the extension should be enough for my problem. I already checked that the magic number technique doesn't work for…

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• How to redirect to another page using a select menu and link_to - Ruby on Rails

  - by Michaël

  Hi, I want to use a select menu to redirect to another page but when I select 'Home' it doesn't redirect me to the main page. Nothing happends... <select> <option>Select a menu</option> <option><%= link_to 'Home', '/' %></option> </select> Thank you for your help.

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• Need some help with constructor

  - by mousey

  you have a class A, where you set ctor to be private, so a client can't call "A a;" to create obj on stack. But someday another developer add a new ctor: "A(int)" and try to call "A a(1);" inside main(). So this will create a obj on stack. How do you prevent that?

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• C++: compute a number's complement and its number of possible mismatches

  - by Eagle

  I got a bit stuck with my algorithm and I need some help to solve my problem. I think an example would explain better my problem. Assuming: d = 4 (maximum number of allowed bits in a number, 2^4-1=15). m_max = 1 (maximum number of allowed bits mismatches). kappa = (maximum number of elements to find for a given d and…

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• Inserting Records in Ascending Order function- C homework assignment

  - by Aaron McRuer

  Good day, Stack Overflow. I have a homework assignment that I'm working on this weekend that I'm having a bit of a problem with. We have a struct "Record" (which contains information about cars for a dealership) that gets placed in a particular spot in a linked list according to 1) its make and 2) according to its model…

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• Where is the libray for 'dlsym'

  - by hap497

  Hi, I am getting this linker error: system/core/libacc/tests/main.cpp:42: error: undefined reference to 'dlsym' Can you please tell me where is the library on ubuntu 9.10 which contains the library for 'dlsym'? Thank you.

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• Target MovieClip from non-Document Class in Flash

  - by loto

  Hi, is there any way to target a MovieClip from an external class that's NOT the Document Class? Is it correct to have the Document Class as Main AND View?

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• Can parser combination be made efficient?

  - by Jon Harrop

  Around 6 years ago, I benchmarked my own parser combinators in OCaml and found that they were ~5× slower than the parser generators on offer at the time. I recently revisited this subject and benchmarked Haskell's Parsec vs a simple hand-rolled precedence climbing parser written in F# and was surprised to find the F# to…

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• when will use new ?

  - by kam

  Hi All, class A { }; void main() { A objA; // case 1 // or A *p = new A; case 2; } when will use case 1? and when will use case2 Thanks, Kam

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• How to load a springframework ApplicationContext from Jython

  - by staticman

  I have a class that loads a springframework application context like so: package com.offlinesupport; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class OfflineScriptSupport { private static ApplicationContext appCtx; …

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• Silverlight Custom Control Create Custom Event

  - by PlayKid

  Hi There, How do I create an event that handled a click event of one of my other control from my custom control? Here is the setup of what I've got: a textbox and a button (Custom Control) a silverlight application (uses that above custom control) I would like to expose the click event of the button from the custom…

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• C# Simple Event Handler for Setting Alarm

  - by yeeen

  Why does the following line "alarm.AlarmEvent += new AlarmEventHandler(alarm_Sound);" gives me "An object reference is required for the non-static field, method, or property 'AlarmClock.Alarm.alarm_Sound(object, System.EventArgs)'" public static void Main(string[] args) { Alarm alarm = new Alarm(new…

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• Simple ASP.NET Database Query

  - by Steven

  I have loaded my database with one table under "Data Connections" in the "Server Explorer" pane. What is the standard / best-practices way to handle a simple query in a VB ASPX page? My left <div> would be a set of form elements to filter rows, and when the button is clicked, the main <div> would show…

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• regarding java version 1.3 to 1.4

  - by girinie

  Hi I am using java version as **java version "1.3.1_01" Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1_01) Java HotSpot(TM) Client VM (build 1.3.1_01, mixed m**ode) But I have written an application. I am getting run time error as Exception in thread "main" java.lang.NoClassDefFoundError:…

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• What is `objc_msgSend_fixup`, exactly?

  - by Luis Antonio Botelho O. Leite

  I'm messing around with the Objective-C runtime, trying to compile objective-c code without linking it against libobjc, and I'm having some segmentation fault problems with a program, so I generated an assembly file from it. I think it's not necessary to show the whole assembly file. At some point of my…

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• Scanf fails with bus error

  - by Mikulas Dite

  I'm playing with C and I've run into this error: #include <stdio.h> int main () { char* foo; scanf("%s", foo); printf("entered %s", foo); return 0; } scanf takes pointer, foo is pointer, yet I get bus error. How can I make it work?

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• Moving MVC2 Helpers to MVC3 razor view engine

  - by Dai Bok

  Hi, In my MVC 2 site, I have an html helper, that I use to add javascripts for my pages. In my master page I have the main javascripts I want to include, and then in the aspx pages, I include page specific javascripts. So for example, my Site.Master has something like this: .... <head> …

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• testing a shellcode...

  - by kmitnick

  hey folks, I have this piece of code to test a shellcode but I don't understand it so can anyone explain it to me??? forget about the assembly shellcode, what i want to understand is the C code char shellcode[] = "..."; int main(int argc, char **argv) { int (*func)(); func = (int (*)())…

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• Reading a child process's /proc/pid/mem file from the parent

  - by Amittai Aviram

  In the program below, I am trying to cause the following to happen: Process A assigns a value to a stack variable a. Process A (parent) creates process B (child) with PID child_pid. Process B calls function func1, passing a pointer to a. Process B changes the value of variable a through the…

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• Android: how to share code between projects signed with the same certificate

  - by tomash

  In Android documentation concerning code signing we can read: "By signing multiple applications with the same certificate and using signature-based permissions checks, your applications can share code and data in a secure manner." How exactly such code sharing can be done? Is it possible to…

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