break

问题 I'd like to show no more than n characters of a text field in search results to give the user an idea of the content. However, I can't find a way to easily break on words, so I wind up with a partial word at the break. When I want to show: "This student has not submitted his last few assignments", the system might show: "This student has not submitted his last few assig" I'd prefer that the system show up to the n character limit where words are preserved, so I'd like to see: "This student

问题 if (isset($errors)) { foreach ($errors as $error) { echo $error; } } else {break 2;} // some more code Outputs: Fatal error: Cannot break/continue 2 levels I tried break 1 , it didn't work either. 回答1: if (isset($errors)) { foreach ($errors as $error) { echo $error; } } No need to use break as you seem to want to end on the else condition. just use the above code for your errors, it will be skipped if no errors. No need for break 回答2: Break ends the execution within a foreach, for, while, do

问题 I have often heard that using break s in Java is considered bad practice, but after reading some threads on Stack Overflow, I've seen otherwise. Many say that it is acceptable in certain cases. I'm a little confused as to what is/isn't bad practice in this case. For Project Euler: Problem 7, I've constructed the code below. The challenge was to find the 10001st prime. int index = 2, count = 1, numPrime = 1; while (true) { index++; if (isPrime(index)) { count = index; numPrime++; } if

问题 Does anyone knows what the group_skip do? Maybe it is a basic programming, but I've been programming using Java for some years and just found it today. group_skip: do { event = stepToNextEvent(FormController.STEP_OVER_GROUP); switch (event) { case FormEntryController.EVENT_QUESTION: case FormEntryController.EVENT_END_OF_FORM: break group_skip; } } while (event != FormEntryController.EVENT_END_OF_FORM); Thanks! 回答1: This is a labelled loop, when break group_skip; statement is executed, it will

问题 I have a python script that uses plt.show() as it's last instruction. When it runs, IDLE just hangs after the last instruction. I get the image but I don't get the prompt back. On other scripts I typically use ctrl-c to break the program (sometimes doesn't work immediately) but how do I get the prompt back with the plt.show() ? Ctrl-c doesn't work... Are there other ways to stop the program? This is IDLE on Windows, if it makes any difference. 回答1: I have seen this problem with IDLE and

问题 I am trying to add up sums that are associated with an account. So my variable vControl is going to be my account variable, and when that variable changes I need to break from the loop and print out the SUM results and the account name. I could manage the printing out part and the SUM logic easily, but I am struggling to come up with the proper loop logic that iterates through the array and breaks anytime the account changes, and when the account changes to go back into the SUM loop again. I

问题 I'm still a newbie in Python, so please tolerate my poor syntax and logic if any were bad. Anyhow, I have a function that I'm trying to cleanly (no fancy moves please) break out of a recursive loop. It's a function in a program that iterate through recursively of 1s and 0s (see input file below), and identify the adjacent 0s as distinct subsets. I have a recursive function called "checkAllInOneDirection" that will loop through each position, going right, left, up, down positions to check for

问题 it's part of the homework, but it's not the main part I already made the main function by manually changing the data by myself, but I really don't get how to read the user inputs correctly. Here are what the inputs look like: 3 1 2 9 6 1 1 3 4 4 6 0 So basically the first input is the size of the # of the next inputs. So for 3, the array is size 3 with [1,2,9] being the elements, and for 6, the array size is 6 with [1,1,3,4,4,6] being the elements And when the input is 0, the program

问题 In this game that I created I ran into a problem. It all works great except that if you fail for some reason the game just restarts and that's not what I want. I want to display what I have it set to display and then break the loop, for some reason the break; isn't working. Code: import java.util.Scanner; import java.util.Random; public class GuessingGame1_3 { public static void main(String[] args) { Scanner input = new Scanner(System.in); Random rand = new Random(); System.out.print("Pick a

问题 I am trying to replace all \n\n on my server with the <BR> tag so that a single \n does not turn into <BR> . Example: Hello,\n\nThis is an\nexample.\n\nThanks! goes to: Hello,<BR>This is an\nexample,<BR>Thanks! (notice the single \n was not replaced) When I do the following in PHP, it does not replace the two lines with a break: $str = str_replace("\n\n", "<br />", $str); 回答1: Your \n are actually \r\n (which means the input came from a Windows operating system), I suggest you normalize you