How do you prevent Xcode 7 Playgrounds from automatically running?

In the lower-left part of the Playground there’s a right-facing blue arrow, looking like a “play” button. Do a long click on this button and you will get two options: “Automatically Run” and “Manually Run”. Choose the latter to put the Playground is manual mode and start/stop its execution yourself by clicking on this button. … Read more

Refresh (reload) a page once using jQuery?

Alright, I think I got what you’re asking for. Try this if(window.top==window) { // You’re not in a frame, so you reload the site. window.setTimeout(‘location.reload()’, 3000); //Reloads after three seconds } else { //You’re inside a frame, so you stop reloading. } If it is once, then just do $(‘#div-id’).triggerevent(function(){ $(‘#div-id’).html(newContent); }); If it is … Read more

maintaining TreeSet sort as object changes value

As others have noted, there is no in-built way. But you can always subclass that TreeSet, with your constructor(s) of choice, and add in the required functionality: public class UpdateableTreeSet<T extends Updateable> extends TreeSet<T> { // definition of updateable interface Updateable{ void update(Object value); } // constructors here … // ‘update’ method; returns false if … Read more

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