infinite-loop

问题 I have a piece of code which should read input word by word and add the length of the word to an ArrayList recursively (for a school exercise). I wrote this method: ArrayList<Integer> wordLengths = new ArrayList<Integer>(); Scanner scanner = new Scanner(System.in); // ... private void readWords() { // read a word, if there are more words, read the next word this.wordLengths.add(this.scanner.next().length()); if (this.scanner.hasNext()) { readWords(); } } When I call this method, it keeps

问题 DISCLAIMER: I'm still an uber-n00b with programming concepts and know just enough VBS to hurt myself, so I'm likely to slur/slaughter some of the terms/concepts/ideas that are entailed with this program I'm trying to write. You, the vastly superior programmer who has every right to flame me, have been warned. I've been trying to write a VBScript to validate data, specifically Dates. Since my users are kind of poor with keyboards, I figured I'd make it easy by separating the entry of each part

问题 I am writing a simple C++ Program which allocates dynamic memory to my Program and then deletes this memory. Here is my Program: #include <iostream> #include <new> using namespace std; int main () { int i,n; int * p; cout << "How many numbers would you like to type? "; cin >> i; p= new (nothrow) int[i]; if (p == nullptr) cout << "Error: memory could not be allocated"; else { for (n=0; n<i; n++) { cout << "Enter number: "; cin >> p[n]; } cout << "You have entered: "; for (n=0; n<i; n++) cout <

问题 Given the following Spring application context and class A, what happens when you run class A? applicationContext.xml (in classpath): <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd"> <bean name="a" class="A"/> </beans> A.java: class A { private ApplicationContext

问题 I have iframe facebook app but reload making infinite loop. Yesterday work fine, but not to day. I'm using javascript and php sdk 3.1.1 with this code: <div id="fb-root"></div> <script src="http://connect.facebook.net/en_US/all.js"></script> <script> FB.init({ oauth: true, // turn oauth appId : 'myappId', status : true, // check login status cookie : true, // enable cookies to allow the server to access the session xfbml : true // parse XFBML }); FB.Canvas.setAutoGrow(); </script> FB

问题 I have created custom jQuery UI widget called uiPopover, very similar to UI-dialog (in fact, most of the code is copy-paste from it). This widget has a custom destroy method that hides the widget and removes it from the DOM. Again, it's pretty much copy-paste from UI-dialog. destroy: function() { var self = this; if (self.overlay) { self.overlay.destroy(); } self.close(); self.element .removeData('popover'); self.uiPopover.remove(); console.log('afterRemove') return self; }, The weird thing

问题 I'm caught in a logical catch-22. Let me clarify what I am trying to do: A button press will trigger a motor to move until a sensor is felt (sends 3.3V to my Rpi GPIO), at which point it will reverse direction. This all works fine; the problem is, it is stuck within an infinite loop, so if I want to press another button, for example to increase the speed, or stop it in the middle of a run, well, I can't. I have tried to implement "wiringPiISR()", as an interrupt, but that seems to also be

问题 So for my program I need to check a client on my local network, which has a Flask server running. This Flask server is returning a number that is able to change. Now to retrieve that value, I use the requests library and BeautifulSoup. I want to use the retrieved value in another part of my script (while continuously checking the other client). For this I thought I could use the threading module. The problem is, however, that the thread only returns it's values when it's done with the loop,

问题 I have 2 JTextFields: JTextField txtJobType, txtPriorityCode; This is the functionality I need: When user types in 'administration' in txtJobType and hits tab (or clicks away) an error check is done to see whether the field is empty or if the text entered exists in database. The way I have done that is: private void txtJobTypeFocusLost(java.awt.event.FocusEvent evt) { System.out.println("JobType Focus Lost"); if (!checkFieldExists(txtJobType.getText(), "jobType", "jobCode", JobType.class) ||

问题 While trying to debug some C code I noticed that a printf() won't execute if placed before an infinite loop. Does anyone know why this is? Practically it's not that big of a deal, but for debugging it's a nightmare. #include<stdio.h> int main() { int data; printf("This prints fine.\n"); printf("Enter data: "); scanf("%d", &data); printf("This should print but it doesn't.\n"); while(1) { //Infinite Loop } return 0; } 回答1: On calling printf() , output is displayed after program terminates or