exception

问题 So I try to make a post request having no internet connection using next modified code: WinHttpReq := CreateOleObject('WinHttp.WinHttpRequest.5.1'); WinHttpReq.Open('POST', '<your_web_server>', false); WinHttpReq.SetRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); try WinHttpReq.Send('data'); except bla:= 'e'; finally bla := 'f'; end; Yet exception does not get catched and I get crush of my setup application with next image: How to handle OleObject exception in Inno Setup?

问题 I have a WCF service which all operations return type is OperationStatus: [DataContract] public abstract class ServiceResponse { [DataMember] public bool Success { get; set; } [DataMember] public String StatusReason { get; set; } } I'd like to create an ErrorHandler to catch all exceptions and then I'd like it to return to the client instance of class ServiceReponse with property Success set to false and StatusReason set to "INTERNAL SERROR". As for now I have my own class implementing

问题 I made recursive function, just like require : L (List[Int]) L pattern matching Nil => Thread.dumpStack() x :: xs => print(x) + function(xs) def function(L : List[Int]) { L match { case Nil => Thread.dumpStack() case x :: xs => print(x + " "); function(xs) } } val l = (1 to 5).toList // function(l) So I think this function in the stack frame n times, but it occurs one time, I think this function has already found Nil and print out exception Thread.dumpStack . Is scala compiler smart or other

问题 Duplicate: How to catch exceptions from a ThreadPool.QueueUserWorkItem? I am queueing up multiple delegates on the .Net ThreadPool for a large number of independant remoting calls that themselves call multiple databases and other offline resources. By Queueing these calls on the ThreadPool I can run them concurrently and minimize the overall latency. private void CompleteAndQueuePayLoads(IEnumerable<UsagePayload> payLoads) { List<WaitHandle> waitHndls = new List<WaitHandle>(); foreach

问题 Is it possible to define an exception handler for any unhandled exceptions? Wrapping my entire code block in a begin/rescue/end block feels messy. 回答1: How about using at_exit? It should be called even when an exception occurs and you can log the last exception using $! Here is an example: at_exit { puts "Last exception: (#{$!.inspect})" puts "Backtrace: \n#{$@}" puts "Exiting..." } puts "my app..." raise "Exception!" http://www.ruby-doc.org/core-1.9.3/Kernel.html#method-i-at_exit 来源： https:/

问题 I have a following problem, my main method is: static public void main(String args[]){ SparkConf conf = new SparkConf().setAppName("TestHive"); SparkContext sc = new org.apache.spark.SparkContext(conf); HiveContext hiveContext = new org.apache.spark.sql.hive.HiveContext(sc); } And I build it with mvn package Then I submit my code, however I get following exception. I have no idea what's wrong: sh spark-submit --class "TestHive" --master local[4] ~/target/test-1.0-SNAPSHOT-jar-with

问题 I'm experimenting with JavaFX labels and Groups with moving them over the screen by mouse dragging. New nodes are added to the animation group from some Threads. However, sometimes I see the following exception out of the sudden - I assume, when some nodes are overlapping. But I don't know what the problem is... because my code is not involved. Does anybody know this exception and root cause (using JDK 1.8.0.-112)? Thanks 'JavaFX Application Thread' lambda$main$68 - Thread[JavaFX Application

问题 I first came across exceptions with ADA 83. As far as I know, the designers of ADA invented the concept of exceptions. Is this true, or did any programming language that came before use exceptions too? 回答1: According to c2.com's Ground Breaking Languages page it was PL/I. 回答2: It depends on how you define generics. Parametric polymorphism - which allows you to define functions and types that are not tied to particular argument / field types - was there in ML already - and that's 1973. There

问题 The following line of code is causing me an Exception plug.Instance.AddDocuments(new Int32[] { val_pid }, val_ptype, val_doccat, val_subcat, val_doctype, val_notes, val_summary, SummaryAppendOptions.None, val_docStatus, new String[] { PDFFile }) And this is the exception detail. System.Exception was caught Message=Object reference not set to an instance of an object. - Error when trying to save document Source=SimsBridge StackTrace: at SimsBridge.Bridge.AddDocuments(Int32[] personIds, Int32

问题 The code below is what I use to record audio until the "Enter" key is pressed it returns an exception, import pyaudio import wave import curses from time import gmtime, strftime import sys, select, os # Name of sub-directory where WAVE files are placed current_experiment_path = os.path.dirname(os.path.realpath(__file__)) subdir_recording = '/recording/' # print current_experiment_path + subdir_recording # Variables for Pyaudio chunk = 1024 format = pyaudio.paInt16 channels = 2 rate = 48000 #