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presentViewController:animated:YES view will not appear until user taps again

I'm getting some strange behaviour with presentViewController:animated:completion . What I'm making is essentially a guessing game. ...
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How do you 'redo' changes after 'undo' with Emacs?

... Short version: by undoing the undo. If you undo, and then do a non-editing command such as C-f, then the next undo will undo the undo, resulting in a redo. Longer version: You can think of undo as operating on a stack of operations. If you perform some command (even a navigation command such...
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Why functional languages? [closed]

...e about functional languages and stuff. Why would you use one over a "traditional" language? What do they do better? What are they worse at? What's the ideal functional programming application? ...
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Javascript event handler with parameters

...nt function arguments }, false); } Depending upon your exact coding situation, you can pretty much always make some sort of closure preserve access to the variables for you. From your comments, if what you're trying to accomplish is this: element.addEventListener('click', func(event, this.el...
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What's the difference between SoftReference and WeakReference in Java?

...ory. Weak references allow you to leverage the garbage collector's ability to determine reachability for you, so you don't have to do it yourself. You create a weak reference like this: WeakReference weakWidget = new WeakReference(widget); and then elsewhere in the code you can us...
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What's the difference between the 'ref' and 'out' keywords?

I'm creating a function where I need to pass an object so that it can be modified by the function. What is the difference between: ...
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C/C++ with GCC: Statically add resource files to executable/library

... With imagemagick: convert file.png data.h Gives something like: /* data.h (PNM). */ static unsigned char MagickImage[] = { 0x50, 0x36, 0x0A, 0x23, 0x43, 0x72, 0x65, 0x61, 0x74, 0x65, 0x64, 0x20, 0x77, 0x69, ...
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Pretty graphs and charts in Python [closed]

... I'm the one supporting CairoPlot and I'm very proud it came up here. Surely matplotlib is great, but I believe CairoPlot is better looking. So, for presentations and websites, it's a very good choice. Today I released version 1.1. If interested, check it out at CairoPlot v1.1...
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#pragma pack effect

...eprocessor statement does, and more importantly, why one would want to use it. 11 Answers ...
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Link to “pin it” on pinterest without generating a button

I have a page with tens or hundreds of posts, each one with social buttons. I just can't generate all the buttons for each url: it is too slow (facebook, g+, twitter, pinterest... for hundreds of links). So, instead of the facebook share button to be generated on the fly, I use a simple img pointing...