infinite-loop

问题 Out of curiousity, are all infinite loops bad? What are the bad effects and consequences that will happen if you run an infinite loop? Also, if they are not all bad, could you please give some examples when they will serve a meaningful purpose? And do they need to have something to close the instance? For example, we always close the StreamReader after using it in Java (not sure why). 回答1: I'm not sure what you mean by "bad". Infinite loops are common in many scenarios mostly event handler

问题 Out of curiousity, are all infinite loops bad? What are the bad effects and consequences that will happen if you run an infinite loop? Also, if they are not all bad, could you please give some examples when they will serve a meaningful purpose? And do they need to have something to close the instance? For example, we always close the StreamReader after using it in Java (not sure why). 回答1: I'm not sure what you mean by "bad". Infinite loops are common in many scenarios mostly event handler

问题 I have a map. On this map I want to show live data collected from several tables, some of which have astounding amounts of rows. Needless to say, fetching this information takes a long time. Also, pinging is involved. Depending on servers being offline or far away, the collection of this data could vary from 1 to 10 minutes. I want the map to be snappy and responsive, so I've decided to add a new table to my database containing only the data the map needs. That means I need a background

问题 A simple question: Why can I do this var start = function() { $('#element').animate({}, 5000, 'linear', start); } but not this function start() { $('#element').animate({}, 5000, 'linear', start()); } ? The first works perfectly, restarting the animation after it completes. The second simply causes an infinite loop. 回答1: Either use function start() { $('#element').animate({}, 5000, 'linear', start); } or function start() { $('#element').animate({}, 5000, 'linear', function(){ start(); }); }

问题 I was experimenting with various ways of creating an infinite loop in Python (other than the usual while True ), and came up with this idea: x = {0: None} for i in x: del x[i] x[i+1] = None # Value doesn't matter, so I set it to None print(i) On paper, I traced out the way this would infinitely loop: I loop through the key's value in the dictionary I delete that entry. The current counter position in the loop + 1 will be the new key with value None which updates the dictionary. I output the

问题 I'm looking to keep the following menu repeating: Choose an Option 1 - FIND 2 - IN-SHUFFLE 3 - OUT-SHUFFLE So that when a user selects an option (and this will be executed), afterwards they can select other options as well. Problem: My code keeps the menu repeating without stopping. import java.util.Scanner; public class MainMenu { public static void main(String[] args) { int userChoice; userChoice = menu(); } private static int menu() { Scanner scanner = new Scanner(System.in); System.out

问题 As a succession to this post I'm running into an infinite loop that causes my computer to crash. Or, well, not quite: it seems to cause the Java window (JFrame) to keep getting focus/getting iconified and normalized infinitely. As such do not try to run the code as is . The program won't allow you to shut it down, nor can you do so via task manager. I have given a complete code example, that you can run - as is often advised. As it's a stripped-down version of an actual program, some code may

问题 #Program to print fibonacci until a range. print "Fibonacci Series" print "Enter a range" range = raw_input() first=1 second =1 print first print ", " print second print ", " third = 0 while(third < range): third=first+second print third print ", " first = second second = third #End of program Here, the program asks user for a range and prints the series upto the range. But, m getting the series of infinite loop. Can anyone help me? 回答1: range = raw_input() sets range to be a string , e.g. it

问题 I'm apparently facing an infinite loop on while(input.hasNext()) , as in following code File file = new File("data.txt"); Scanner input = new Scanner(file); int sum = 0; while (input.hasNext()) { if (input.hasNextInt()) { sum += input.nextInt(); } } System.out.println(sum); Some related questions explain why it always returns true if input stream is System.in , however I'm scanning through a File . Please let me know where I'm going wrong. I'm attempting to calculate the sum of unique integer

问题 /// infinite loop?? $x=1; while($x=9){ echo $x; $x++; } i dont understand the reason behind, why the above code causes infinite loop in my opinion above code should output "9" once. but it outputs endless 999999999...... at first (when x is equal to 1) while statement is false so nothing happens, then x becomes 2 but again while statement is false; So when x becomes 9 while statement is true so it should echo 9 then we add 1 due to x++; and it becomes 10 so while statement becomes false but