infinite-loop

问题 How can I make a effect in swift similar to this: I want the animation to loop forever. 回答1: For iOS UIViewAnimationOptions set provides different handy options to achieve a combination of beautiful and complex animations. For your particular scenario you will require two of the options. UIViewAnimationOptions.Repeat UIViewAnimationOptions.AutoReverse Check out the code below for implementation. Code : class MyViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad(

问题 I'm a beginner in C, and I've got problem I can't figure out, and wasn't able to find a solution on other threads here. I'm trying to read integers from a keyboard input/ txt file with the following code: int grades[MAX_GRADES_LENGTH]={0}, histogram[HISTOGRAM_SIZE]={0}; int maxGradesHistogramBucket=0, median=0, gradesLength=0; double avg=0.0; int grade=0; printf("Enter grades:\n"); while (scanf("%d",&grade) != EOF) { grades[gradesLength]=grade; gradesLength=gradesLength+1; } I'm supposed to

问题 I'm trying to read some data from a file then print it out but My code is only reading the first content and then gets stuck in an infinite loop (in the while loop). What am I doing wrong? My output is just Student: Abby GPA: 3 I'm using Visual Studio 2012. I am just following an example from my book. //My data is Abbie 3.4 Oakley 3.5 Sylvia 3.6 Uwe 3.7 Ken 3.8 Aaron 3.9 Fabien 4 #define _CRT_SECURE_NO_WARNINGS #include <stdio.h> #include <string.h> #include <stdlib.h> void main() { unsigned

问题 All works perfectly, but when there are more one items in the cart.. and the the quantity of any item (except the last item in list) is changed the code below goes into infinite loop, i have verified it by placing print_r statements in it. The part of the code that goes into infinite loop: if (isset($_POST['item_to_adjust']) && $_POST['item_to_adjust'] != "") { // execute some code $item_to_adjust = $_POST['item_to_adjust']; $quantity = $_POST['quantity']; $quantity = preg_replace('#[^0-9]#i'

问题 Having the following matrix and vector. x<-matrix(c(1,4,7, 2,5,8, 3,6,9), nrow = 3) w <- c(1,1,1) res <- c() What is the best way to multiply recursiverly till obtain a desire sum of the results as exemplified: res[1]<-w %*%x[1,] res[2]<-w %*%x[2,] res[3]<-w %*%x[3,] res[4]<-w %*%x[1,] res[5]<-w %*%x[2,] sum(res)>1000 #Multiply recursiverly till the sum of the results sum(res) goes further than 1000. 回答1: Here is how to do it recursively : f <- function(x, w, res){ if (sum(res)>1000) return

问题 I'm trying to submit a form using jQuery and it worked just fine until I had to add a confirmation window so users can review their data before submission, here's the code: $("#create-group-form").live('submit', function(e){ e.preventDefault(); var form = $(this); jConfirm('Here I display the group info...', 'Confirm Group', function(r){ if ( r ) { form.submit(); } }); }); I'm using the jAlert plugin for jQuery but it works just as a regular Confirm prompt with different styling, the preblem

问题 I am developing a facebook app and I have some php functions. When I call one of them, the request is sent over and over and goes in an infinite loop. I have no clue why. My function is: function writeJSON() { if (!$user_id) { echo "User not logged in"; } else { global $arrayForJSON,$user_id; $arrayForJSON['a']='b'; var_dump($arrayForJSON); } } If I run it just like that, it will show array (size=1) 'a' => string 'b' (length=1) Which is correct. However if I run another function that adds

问题 I have a Producer-Consumer problem to implement in Java, where I want the producer thread to run for a specific amount of time e.g. 1 day, putting objects in a BlockingQueue -specifically tweets, streamed from Twitter Streaming API via Twitter4j- and the consumer thread to consume these objects from the queue and write them to file. I've used the PC logic from Read the 30Million user id's one by one from the big file, where producer is the FileTask and consumer is the CPUTask (check first

问题 I am working on an assignment in C++ meant to teach us more about objects and OOP. Below is my code. The gist of it is, the user enters some input, and the program counts the number of vowels or consonants (chosen by the user), the total number of characters entered, and the total number of end-of-lines. I am having three issues: The portion of code I've commented out is causing an infinite loop when left in. It causes the output from the countChars function to be printed infinitely, as well

问题 EDIT: I am trying to integrate Tiles with Velocity using spring MVC. My server is going into infinite loop. The console reading of server is: I have marked the start of the loop as "-->". --> at org.apache.tiles.jsp.taglib.InsertAttributeTag.doTag(InsertAttributeTag.java:311) at org.apache.jsp.WEB_002dINF.views.layout_jsp._jspx_meth_tiles_005finsertAttribute_005f0(layout_jsp.java:102) at org.apache.jsp.WEB_002dINF.views.layout_jsp._jspService(layout_jsp.java:69) at org.apache.jasper.runtime