exit

I'm currently launching a programme using subprocess.Popen(cmd, shell=TRUE) I'm fairly new to Python, but it 'feels' like there ought to be some api that lets me do something similar to: subprocess.Popen(cmd, shell=TRUE, postexec_fn=function_to_call_on_exit) I am doing this so that function_to_call_on_exit can do something based on knowing that the cmd has exited (for example keeping count of the number of external processes currently running) I assume that I could fairly trivially wrap subprocess in a class that combined threading with the Popen.wait() method, but as I've not done threading

Possible Duplicate: Windows Phone 7 close application How do I programmatically close a WP7 application? Syed Umar Ahmed You can always call an exit by doing this at your landing page use this code on click of your application back button: if (NavigationService.CanGoBack) { while (NavigationService.RemoveBackEntry() != null) { NavigationService.RemoveBackEntry(); } } This will remove back entries from the stack, and you will press a back button it will close the application without any exception. Acknowledging known solutions to provide "Exit" buttons, currently I do not see a compelling

When I call pthread_exit from main , the program never gets to terminate. I expected the program to finish, since I was exiting the program's only thread, but it doesn't work. It seems hung. #include <stdio.h> #include <stdlib.h> #include <pthread.h> int main(int argc, char *argv[]) { printf("-one-\n"); pthread_exit(NULL); printf("-two-\n"); } Process Explorer shows that the (only) thread is in Wait:DelayExecution state. According to pthread_exit documentation: The process shall exit with an exit status of 0 after the last thread has been terminated. The behavior shall be as if the

What is the best way to exit/terminate a while loop in Java? For example, my code is currently as follows: while(true){ if(obj == null){ // I need to exit here } } Use break : while (true) { .... if (obj == null) { break; } .... } However, if your code looks exactly like you have specified you can use a normal while loop and change the condition to obj != null : while (obj != null) { .... } while(obj != null){ // statements. } break is what you're looking for: while (true) { if (obj == null) break; } alternatively, restructure your loop: while (obj != null) { // do stuff } or: do { // do stuff

I have a question regarding launching new activities. It boils down to this. I have 3 tabs on a view A) contains gMap activity B) camera activity C) some random text fields. Requirement is that the application runs in Portrait mode. All 3 tabs work as expected w/ the exception of the Camera Preview Surface (B). It is rotated 90 degrees. They only way to make it correct is to set the app to landscape which throws all my tabs around, and is pretty much unworkable. My solution is this : replace my camera activity with a regular activity that is empty w/ the exception of Intent i = new Intent(this

return:只是退出函数; ~是关键字. exit:是退出进程; ~是函数名. 整理自: https://www.cnblogs.com/cxchanpin/p/6927025.html 来源： https://www.cnblogs.com/Stephen-Qin/p/11333484.html

In a library I have a function which searches for a key in a database and return a non-const reference to an object. I want to handle the case in which the key is not found, which is typically caused by a mistake when calling the function. This situation is so bad that the program cannot continue, so I print a message to help to spot the bug and call exit(1) . The problem is with the return statement which will never be executed in this case, but have to be there anyway. If it was a pointer I could just return nullptr; but with a reference? Should I do something like this pseudo code? Type &