exception

问题 I'm using eurovat gem to check a VAT number. Eurovat.check_vat_number vat_number If I run that from irb, sometimes I receive this: SOAP::FaultError: MS_UNAVAILABLE from (Nothing appear after "from") I want to write a begin rescue block to rescue those error, but how I do know what to rescue? I have tried with rescue SOAP::FaultError but didn't works 回答1: I found the way after a bit of testing: rescue SOAP::FaultError => e if e.message == "MS_UNAVAILABLE" # @ToDO handle service unavailable

问题 Just now I tried Browser Link with Firefox 27.0.1 while debugging a simple ASP.NET MVC app. I have Visual Studio Ultimate 2013 Update 1. Here's Browser Link Dashboard: I tried changing something in a razor view, pressed Ctrl+S and went to the browser to see if the page had changed accordingly but... this is what i see in Firebug: http://localhost:6194/85d266397ee64f32b2f4ffdedc974643/arterySignalR/negotiate?requestUrl=http%3A%2F%2Flocalhost%3A26530%2Fgis&browserName=Firefox&clientProtocol=1.3

问题 Assuming Python version >=3 and calling a list of functions. I would like to write a lambda function that handles exceptions. Thing is, it does not work, when there is an exception thrown in a function, the program returns and the call stack is not seeing the executeFunction in it. How to do so? def executeFunction(x): try: x except: print('Exception caught') executeFunction(func1()) executeFunction(func2()) executeFunction(func3()) executeFunction(func4()) executeFunction(func5())

问题 I'm attempting to add a simple View as footer to a ListView. Doing so throws a ClassCastException . (" cannot be cast to android.widget.HeaderViewListAdapter ") Now before you mark this as a duplicate of countless other questions, read on and you will understand why I'm asking for help. I understand the necessary procedure for add header or footer to a ListView before KitKat. The procedure has to be: Added header and/or footer. Then set adapter. This is so that the ListView.setAdapter can

问题 I am creating a Chat application with Java Sockets, and am getting the SocketException: socket closed when closing the server. I receive the error even if I never attempt to connect clients - just stopping the server will have this socket closed exception. I know what the error means, I'm trying to access the socket once it has already been closed, but I can't figure out why this would happen. public ServerSocket server_socket; new ConnectionThread(server_back_end); class ConnectionThread

问题 i am making gallery. i got below exception Caused by: java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uri content://media/external/images/media from pid=23769, uid=10470 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission() I added permission <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> in my AndroidMainfest my code

问题 The problem happens with code like this: #include <cstdlib> #include <iostream> #include <stdexcept> using namespace std; int main(int argc, char** argv) { try { throw runtime_error("Message"); } catch (exception e) { cout << e.what(); } return 0; } I expect Message to appear. But the result was std::exception . I thought the subclass virtual functions can be called from the superclass reference. How can fix that? 回答1: C++ makes an explicit distinction between reference and value copy. Use

问题 i am using Alert-dialog in Asynchronous task onPostexecute method.but my problem is when i come back to previous activity before the Asynchronous task completes.The Alertdialog (alert.show) is giving the following exception.The Alertdialog will appear on window but why this is not showing in other screens when i switch back. Logcat Error: 02-27 05:03:05.283: E/AndroidRuntime(827): FATAL EXCEPTION: main 02-27 05:03:05.283: E/AndroidRuntime(827): android.view.WindowManager$BadTokenException:

问题 If I run the following (at least on Chromium): var w = null; try { w = new Worker( 'NONEXISTENT_URL' ); } catch ( e ) { console.log( 'CAUGHT: ' + e ); } console.log( w ); ...no exception is caught, even though the argument to the Worker constructor does not point to a valid filename. Moreover, the console shows Worker {} , indicating that w now holds a (non-functional) instance of Worker . Other error conditions are also possible. For example, argument to the constructor may be available and

问题 I implemented an android app with volley library to connect my database. The connection with 'get' and 'post' request it works, but the servers response not working. This happens because the Error Response catch automatically the errors (for example my server response with code 201 for the login successful, but volley untersand it like error). I override the parseNetworkError from the class Request: @Override protected VolleyError parseNetworkError(VolleyError volleyError) { String parsed;