exception

问题 After migration to AndroidX i have the following exception at startup: LoadedApk: Unable to instantiate appComponentFactory java.lang.ClassNotFoundException: Didn't find class "androidx.core.app.CoreComponentFactory" on path: DexPathList[[],nativeLibraryDirectories=[/data/app/com.apps.entertainmentsolutions.offhole-yUKw5A4ysDVrPyO-DpnhKg==/lib/arm64, /system/lib64, /system/vendor/lib64]] at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:134) at java.lang.ClassLoader

问题 I heard some time ago that I should not create exception classes which would have fields of std::string type. That's what Boost website says. The rationale is that std::string copy constructor can throw an exception if memory allocation fails, and if an exception is thrown before the currently processed exception is caught, the program is terminated. However, does it still hold in the world of move constructors? Won't the move constructor be used instead of the copy constructor when throwing

问题 I heard some time ago that I should not create exception classes which would have fields of std::string type. That's what Boost website says. The rationale is that std::string copy constructor can throw an exception if memory allocation fails, and if an exception is thrown before the currently processed exception is caught, the program is terminated. However, does it still hold in the world of move constructors? Won't the move constructor be used instead of the copy constructor when throwing

问题 This is an interview question, the interview has been done. What things can make C++ slower than C ? The interviewer asked it very deep and always asked "anything else ? " whenever I said something. My ideas: C++ features not available in C may have some cost. For example, if we use assignment to initialize class's members inside a constructor not by the initialization list, the member's default constructor may be called once before the body of the constructor, and then that value wiped out

问题 Is the following way to code good practice? try { //my code here } catch (Exception e) { logger.error("Some error ", e); throw new MyCustomException("Some error ", e); } Moreover, should I.. use only the logger? throw only the exception? do both? I understand that with throw I can catch the exception in another part of the callstack, but maybe additional logging has some hidden benefits and is useful as well. 回答1: I use both in some cases, logging and throwing the exception. Specially, it's

问题 Is the following way to code good practice? try { //my code here } catch (Exception e) { logger.error("Some error ", e); throw new MyCustomException("Some error ", e); } Moreover, should I.. use only the logger? throw only the exception? do both? I understand that with throw I can catch the exception in another part of the callstack, but maybe additional logging has some hidden benefits and is useful as well. 回答1: I use both in some cases, logging and throwing the exception. Specially, it's

问题 I would like the users of my android app to have the option to email me the stacktrace of any uncaught exception that crashes my app. Originally I thought I would just wrap every entry point to my app in a try/catch block, but there are far too many of these even in my tiny app for this to be reasonable. So what I am really looking for is a way to specify some method to be the default handler for any uncaught exceptions. Any suggestions? 回答1: You cannot do what the subject line states from an

问题 I would like the users of my android app to have the option to email me the stacktrace of any uncaught exception that crashes my app. Originally I thought I would just wrap every entry point to my app in a try/catch block, but there are far too many of these even in my tiny app for this to be reasonable. So what I am really looking for is a way to specify some method to be the default handler for any uncaught exceptions. Any suggestions? 回答1: You cannot do what the subject line states from an

问题 I was wondering if something exists (in Java world) able to take an snapshot of the JVM current state with the following features: Do it while an exception is being thrown. Capture local variables, method's arguments, etc. Put it in a handy file which can be used to extract or reproduce in a IDE the situation in your source code. The two first features are required (third would be awesome). And it must be suitable for production use (so, there is no way about debuggers). Before asking this I

问题 Situation I want to create a Python language binding for a C++ API using SWIG. Some of the API functions may throw exceptions. The C++ application has a hierarchy of self-defined exceptions, like this example: std::exception -> API::Exception -> API::NetworkException -> API::TimeoutException -> API::UnreachableException -> API::InvalidAddressException The desired behavior is as follows: All exception types should have a matching Python class as wrapper . These wrapper classes should be valid