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iphone ios running in separate thread

... In my opinion, the best way is with libdispatch, aka Grand Central Dispatch (GCD). It limits you to iOS 4 and greater, but it's just so simple and easy to use. The code to do some processing on a background thread and then do something with the results in the main run loop is inc...
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how does array[100] = {0} set the entire array to 0?

...at don't have a specified value, the compiler initializes pointers to NULL and arithmetic types to zero (and recursively applies this to aggregates). The behavior of this code in C++ is described in section 8.5.1.7 of the C++ specification (online draft of C++ spec): the compiler aggregate-initial...
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Store password in TortoiseHg

...//username:password@hostname.com/repo. This is explained in Google Code's and Mercurial's FAQs. EDIT: Mercurial FAQ explains another way to do it: With Mercurial 1.3 you can also add an auth section to your hgrc file: [auth] example.prefix = https://hg.example.net/ example.username = foo exam...
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Why is there an unexplainable gap between these inline-block div elements? [duplicate]

...is determined by the font-size, you could simply reset the font-size to 0, and thus remove the space between the elements. Just set font-size: 0 on the parent elements, and then declare a new font-size for the children elements. This works, as demonstrated here (example) #parent { font-size: 0...
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How do I create a unique ID in Java? [duplicate]

... Create a UUID. String uniqueID = UUID.randomUUID().toString(); share | improve this answer | follow | ...
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Angularjs - ng-cloak/ng-show elements blink

... body or templates aren't compiled soon enough, use the ng-cloak directive and include the following in your CSS: /* Allow angular.js to be loaded in body, hiding cloaked elements until templates compile. The !important is important given that there may be other selectors that are more sp...
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Adding a collaborator to my free GitHub account?

I created a GitHub account, and I want to give someone write access so he can push just like me, there is a way to add a collaborator with a free plan? If not, what can I do? (besides buying a paid account, which I'll do in the future) ...
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CALayer with transparent hole in it

I have a simple view (left side of the picture) and i need to create some kind of overlay (right side of the picture) to this view. This overlay should have some opacity, so the view bellow it is still partly visible. Most importantly this overlay should have a circular hole in the middle of it so i...
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Stopping fixed position scrolling at a certain point?

I have an element that is position:fixed and so scrolls with the page how i want it to however. when the user scrolls up I want the element to stop scrolling at a certain point, say when it is 250px from the top of the page, is this possible? Any help or advice would be helpful thanks! ...
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Find a file in python

... to implement a search for the file? A way that I can pass the file's name and the directory tree to search in? 9 Answers ...