infinite

问题 I'm looking for resources that create scrolling functions like the ones found on these sites: Outpost Journal Unfold Once the scroll bar hits the bottom of the page, I want it to loop back to the top. I'm familiar with with the infinite scroll, and this is not what I want. I've also found scripts that will write/add the same content to the bottom of the page, but none that loop back to the top of the page. 回答1: Try this: $('document').ready(function() { $(document).scroll(function(){ if

问题 I’m modifying an indefinite sieve of Eratosthenes from here so it uses wheel factorization to skip more composites than its current form of just checking all odds. I’ve worked out how to generate the steps to take to reach all the gaps along the wheel. From there I figured I could just substitute the +2’s for these wheel steps but it’s causing the sieve to skip primes. Here\'s the code: from itertools import count, cycle def dvprm(end): \"finds primes by trial division. returns a list\"

问题 I am using the following code: while (invalidInput) { // ask the user to specify a number to update the times by System.out.print(\"Specify an integer between 0 and 5: \"); if (in.hasNextInt()) { // get the update value updateValue = in.nextInt(); // check to see if it was within range if (updateValue >= 0 && updateValue <= 5) { invalidInput = false; } else { System.out.println(\"You have not entered a number between 0 and 5. Try again.\"); } } else { System.out.println(\"You have entered an