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What are the differences between a UIView and a CALayer?

...chy of CALayers. It's not that hard to implement this yourself, but it is extra code you'd need to write when building a CALayer-only interface. You will often need to access the underlying layers for a UIView when performing more complex animations than the base UIView class allows. UIView's ani...
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Where should virtualenvs be created?

...tree and it tree moves you have to reinstall, or put it on ~ but manage on extra subdir outside of project. – Ciro Santilli 郝海东冠状病六四事件法轮功 Jul 13 at 7:27 ...
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Repeat a task with a time delay?

...be the one passed as the parameter interval;). Also avoid width of over 80 chars in the code when possible (almost always ;) – Mr_and_Mrs_D Mar 15 '13 at 9:24 ...
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How do I give text or an image a transparent background using CSS?

... Why not do it with a pseudo element like :after and avoid the extra markup? – AndFisher Dec 6 '16 at 9:07 add a comment  |  ...
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Is there a way to use SVG as content in a pseudo element :before or :after

... Making use of CSS sprites and data uri gives extra interesting benefits like fast loading and less requests AND we get IE8 support by using image/base64: Codepen sample using SVG HTML <div class="div1"></div> <div class="div2"></div> CSS .d...
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How using try catch for exception handling is best practice

...e try { ... } catch(Exception ex) { throw new ApplicationException(string.Format("I cannot write the file {0} to {1}", fileName, directoryName), ex); } There is a lot to do with exception handling (Custom Exceptions) but thoses rules I try to keep in mind are enough for the simple applicat...
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Relative paths based on file location instead of current working directory [duplicate]

... have readlink, but has POSIX-compatible utilities - e.g., HP-UX (thanks, @Charles Duffy). The following solution, inspired by https://stackoverflow.com/a/1116890/45375, defines helper shell function, rreadlink(), which resolves a given symlink to its ultimate target in a loop - this function is i...
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A simple command line to download a remote maven2 artifact to the local repository?

... Extra helpful for showing how to get the dependency plugin itself installed. – Sergio Acosta Apr 18 '10 at 6:49 ...
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Angularjs if-then-else construction in expression

...es, I know about this functionality it could help, but I don't want to add extra div to the document. but also thanks – IgorCh May 16 '13 at 13:03 ...
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What's the difference between and

...API that used Object.) Source: http://download.oracle.com/javase/tutorial/extra/generics/convert.html; it explains why the JDK's java.util.Collections class has a method with this signature: public static <T extends Object & Comparable<? super T>> T max( Collection<? extends...