exception-handling

问题 I am trying to create a log system on my program that will log debugging messages on text files, and I want to save the exact place in the code where the log message called, but I don't want to use Assert function because it creates exceptions and this system is not for logging exceptions only, also I have to write some debugging info. example usning assert: procedure AnyProcedure(); begin try Assert(1=0); except on E: Exception do Log.AddLine('Log occurred is '+E.Message+' : Start');//Log

问题 I want to handle the Exception of my api by adding a WebExceptionHandler. I can change the status code, but I am stuck when i want to change the body of the response : ex adding the exception message or a custom object. Does anyone have exemple ? How I add my WebExceptionHandler : HttpHandler httpHandler = WebHttpHandlerBuilder.webHandler(toHttpHandler(routerFunction)) .prependExceptionHandler((serverWebExchange, exception) -> { exchange.getResponse().setStatusCode(myStatusGivenTheException);

问题 I want to handle the Exception of my api by adding a WebExceptionHandler. I can change the status code, but I am stuck when i want to change the body of the response : ex adding the exception message or a custom object. Does anyone have exemple ? How I add my WebExceptionHandler : HttpHandler httpHandler = WebHttpHandlerBuilder.webHandler(toHttpHandler(routerFunction)) .prependExceptionHandler((serverWebExchange, exception) -> { exchange.getResponse().setStatusCode(myStatusGivenTheException);

问题 How can I use assertEquals to see if the exception message is correct? The test passes but I don't know if it hits the correct error or not. The test I am running. @Test public void testTC3() { try { assertEquals("Legal Values: Package Type must be P or R", Shipping.shippingCost('P', -5)); } catch (Exception e) { } } The method being tested. public static int shippingCost(char packageType, int weight) throws Exception { String e1 = "Legal Values: Package Type must be P or R"; String e2 =

问题 This is a question I am asked very frequently. Since I couldn't find any exact duplicate on stackoverflow, I thought I'd post it as a reference. Question: In PL/SQL, I know how to catch exceptions and execute code when they are caught, and how to propagate them to the calling block. For example, in the following procedure, the NO_DATA_FOUND exception is handled directly, while all other exceptions are raised to the calling block: CREATE OR REPLACE PROCEDURE MY_PROCEDURE() IS BEGIN do_stuff();

问题 This is a question I am asked very frequently. Since I couldn't find any exact duplicate on stackoverflow, I thought I'd post it as a reference. Question: In PL/SQL, I know how to catch exceptions and execute code when they are caught, and how to propagate them to the calling block. For example, in the following procedure, the NO_DATA_FOUND exception is handled directly, while all other exceptions are raised to the calling block: CREATE OR REPLACE PROCEDURE MY_PROCEDURE() IS BEGIN do_stuff();

问题 I see that one definition can be this: Generally RuntimeExceptions are exceptions that can be prevented programmatically. But that is still not the definition of a checked exception. I thought checked exceptions were "exceptions that can be handled at compile-time". Is that correct and/or can you tell me more? I also read this on the site, can you explain the quote? Many people say that checked exceptions (i.e. these that you should explicitly catch or rethrow) should not be used at all. Java

问题 I see that one definition can be this: Generally RuntimeExceptions are exceptions that can be prevented programmatically. But that is still not the definition of a checked exception. I thought checked exceptions were "exceptions that can be handled at compile-time". Is that correct and/or can you tell me more? I also read this on the site, can you explain the quote? Many people say that checked exceptions (i.e. these that you should explicitly catch or rethrow) should not be used at all. Java

问题 The instructions: Write a function validate_input(string) which takes a command string in the format 'command arg1 arg2' and returns the pair ('command', [arg1, arg2]), where arg1 and arg2 have been converted to floats. If the command is not one of 'add', 'sub', 'mul', or 'div', it must raise InvalidCommand. If the arguments cannot be converted to floats, it must raise InvalidCommand. Typical inputs and outputs: validate_input('add 2 3') -> ('add' [2. , 3.]) validate_input('hahahaha 2 3') ->

问题 Edit See the title "Problem" at the end within my question to crack this question down. Coming from nodejs where we could chain promises, in C# I'm seeing Async Tasks almost comparable. Here's my attempt. Edit - I can't mark my uber level caller methods as async as a dll based library is calling it Caller object public void DoSomething(MyRequest request) { Delegate.Job1(request) .ContinueWith(Delegate.Job2) .ContinueWith(Fault, TaskContinuationOptions.OnlyOnFaulted) .ContinueWith(Result); }