flush

问题 I use the following snippet of code, and I'm unsure whether I need to call the Flush methods (once on StreamWriter , once on MemoryStream ): //converts an xsd object to the corresponding xml string, using the UTF8 encoding public string Serialize(T t) { using (var memoryStream = new MemoryStream()) { var encoding = new UTF8Encoding(false); using (var writer = new StreamWriter(memoryStream, encoding)) { var serializer = new XmlSerializer(typeof (T)); serializer.Serialize(writer, t); writer

问题 What is the rationale behind this behavior? If for some reason I execute two suitable operations outside a transaction (not recommended, I know!) and I've configured Hibernate to auto-flush, I would expect it to auto-flush if the second operation is one that should trigger an auto-flush (like list , iterate , or executeUpdate ). That's exactly what would happen, if not for the explicit check on the second line of the autoFlushIfRequried method: protected boolean autoFlushIfRequired(Set

问题 I'm timing the difference between various ways to print text to standard output. I'm testing cout , printf , and ostringstream using both \n and std::endl . I expected std::endl to make a difference with cout (and it did), but I didn't expect it to slow down output with ostringstream . I thought using std::endl would just write a \n to the stream and it would still only get flushed once. What's going on here? Here's all my code: // cout.cpp #include <iostream> using namespace std; int main()

问题 I recently switched OS and am using a newer Python (2.7). On my old system, I used to be able to print instantaneously. For instance, suppose I had a computationally intense for loop: for i in range(10): huge calculation print i then as the code completed each iteration, it would print i However, on my current system, python seems to cache the stdout so that the terminal is blank for several minutes, after which it prints: 1 2 3 in short succession. Then, after a few more minutes, it prints:

问题 I tried going beyond just guessing random numbers. Basically, the program should be made to show like this : insert a number : 70 bigger than 0 smaller than 70. insert a number : 35 bigger than 35 smaller than 70. insert a number : 55 bigger than 55 smaller than 70. insert a number : 60 bigger than 55 smaller than 60. insert a number : 57 You got it right on your 5th try! I had some problems, but already through brilliant people in stackoverflow, I am able to get all the results I wish, but

问题 My application details: Running on : Macbook pro with 4GB RAM, ATI Radeon X1600 with 128MB VRAM, Opengl version: 2.1 ATI-7.0.52 Using vertical sync (via CVDisplay) : YES Programming Language: Lisp (Lispworks) with FFI to Opengl Pixel Format information ns-open-gl-pfa-depth-size 32 ns-open-gl-pfa-sample-buffers 1 ns-open-gl-pfa-samples 6 ns-open-gl-pfa-accelerated 1 ns-open-gl-pfa-no-recovery 1 ns-open-gl-pfa-backing-store 0 ns-open-gl-pfa-virtual-screen-count 1 [1 = YES, 0 = NO] for boolean

问题 I'm trying to write a function that pings a few hundred addresses and returns their values (milliseconds). So far I've achieved the initial idea which is to ping and get the result but the problem arises when using the same code for hundreds of addresses, the PHP page stalls until it either times out or reaches the last ping command. I would be glad if I could get some suggestions to output the results progressively, here is my current code: <?php // "for" loop added according to suggestion

问题 Overview I have a Client-Server whereby I have the streamWriter.WriteLine(messageToClient); on the server sending large messages. The streamReader.ReadLine(); on the client is reading the 2000 length messages fine. The issue here is the streamWriter.Flush() has no affect on the larger messages, because what I am aiming for is the server to be able to switch between the buffers flushing directly (having a fluid server message output) and not (the server response would be jumbled together until

问题 How to clear the console after a few statements have been executed/printed in Eclipse. I have used flush() but didn't work though. Just posting the sample code. System.out.println("execute "); System.out.println("these set of lines "); System.out.println("first"); Thread.sleep(2000); // just to see the printed statements in the console System.out.flush(); // it is not clearing the above statements 回答1: System.out is a Stream , it makes no sense to clear a stream. Eclipse's Console is a view

问题 I have a long-running report and want to show a wait-spinner to the user while it's generating. I have made this work already but am not sure I'm doing it the best or right way. This is using ColdFusion but it could be any language I guess. At the top of the page, I have some Javascript (jQuery) that shows a wait-spinner plus there's a documentReady handler where I take the spinner down. I flush the output ( if it matters) and then the rest of the code works on the report contents. This wasn