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Fade/dissolve when changing UIImageView's image

... It can be much simpler using the new block-based, UIKit animation methods. Suppose the following code is in the view controller, and the UIImageView you want to cross-dissolve is a subview of self.view addressable via the property self.imageView Then all you ne...
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How do I repeat an edit on multiple lines in Vim?

... Ctrl-v enters visual mode blockwise. You can then move (hjkl-wise, as normal), and if you want to insert something on multiple lines, use Shift-i. So for the text: abc123abc def456def ghi789ghi if you hit Ctrl-v with your cursor over the 1, hit j...
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How is the fork/join framework better than a thread pool?

...So when will you get into trouble with a thread pools? That is if a thread blocks, because your thread is waiting for another task to complete. Assume the following example: class AbcAlgorithm implements Runnable { public void run() { Future<StepAResult> aFuture = threadPool.submi...
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Center image in div horizontally [duplicate]

...ution is painful. Simply set: /* for the img inside your div */ display: block; margin-left: auto; margin-right: auto; or /* for the img inside your div */ display: block; margin: 0 auto; That's all. Note, that you'll also have to set an initial min-width for your outer div. ...
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CSS vertical alignment text inside li

...nd I don't consider it a "hack". Just add line-height: 100px to your ul.catBlock li and it will be fine. In this case you may have to add it to ul.catBlock li a instead since all of the text inside the li is also inside of an a. I have seen some weird things happen when you do this, so try both and...
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Centering floating divs within another div

...center on the main outer div. And for the inner divs, use display: inline-block. Might also be wise to give them explicit widths too. <div style="margin: auto 1.5em; display: inline-block;"> <img title="Nadia Bjorlin" alt="Nadia Bjorlin" src="headshot.nadia.png"/> <br/> N...
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examining history of deleted file

...t this error message: svn cat [url]/trunk/include/syeka/poster_funk.incl.php -r 50 > out.txt svn: '/admintools/!svn/bc/131/trunk/include/syeka/poster_funk.incl.php' path not found See @Bert Huijben's response further down this thread for a working solution. – Keith Palmer...
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What is the difference between concurrency, parallelism and asynchronous methods?

...to do work away from the current application and we don't want to wait and block our application awaiting the response. For example, getting data from a database could take time but we don't want to block our UI waiting for the data. The async call takes a call-back reference and returns execution...
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Access denied for user 'root@localhost' (using password:NO)

...R root@localhost = PASSWORD('new-password'); 2) You can configure wamp's phpmyadmin application for root user by editing C:\wamp\apps\phpmyadmin3.3.9\config.inc.php Note :- if you are using xampp then , file will be located at C:\xampp\phpMyadmin\config.inc.php It looks like this: ...
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JavaScript, Node.js: is Array.forEach asynchronous?

... No, it is blocking. Have a look at the specification of the algorithm. However a maybe easier to understand implementation is given on MDN: if (!Array.prototype.forEach) { Array.prototype.forEach = function(fun /*, thisp */) { ...