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Can overridden methods differ in return type?

... for outer 'this' pointers, synthetic static fields for '.class' literals, etc, etc. and covariant return types is yet more syntactic sugar added by javac. for example, when compiling this: class Base { Object get() { return null; } } class Derived extends Base { @Override @SomeAnnotation ...
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Insert picture/table in R Markdown [closed]

... below). To adjust the image properties (size, resolution, colors, border, etc), you'll need some form of image editor. I find I can do everything I need with one of ImageMagick, GIMP, or InkScape, all free and open source. To add a picture, use: ![Caption for the picture.](/path/to/image.png) I...
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UIActivityViewController crashing on iOS 8 iPads

... I see a lot of people hardcoding iPhone/iPad etc. while using Swift code. This is not needed, you have to use the language features. The following code assumes you will use a UIBarButtonItem and will work on both iPhone and iPad. @IBAction func share(sender: AnyObjec...
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Need to log asp.net webapi 2 request and response body to a database

... question of volume the site handles, the performance of logging facility, etc. That's beyond OPs post. – LB2 Feb 22 '17 at 0:05 add a comment  |  ...
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Rails Observer Alternatives for 4.0

...cation (consider nested forms, model business logic updating associations, etc.) share | improve this answer | follow | ...
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Exploring Docker container's file system

... are relative to the root of the filesystem. #> docker cp 7bb0e258aefe:/etc/debian_version . #> docker cp blue_frog:/etc/hosts . – Amos Folarin Apr 24 '14 at 11:37 ...
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What is the best way to stop people hacking the PHP-based highscore table of a Flash game

...core limit and no way to verify the score on the server by replaying moves etc. 18 Answers ...
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How do I format a Microsoft JSON date?

... @yanant - the +a[1] etc represents the array pieces of the regex and the + would cast it to a number, so +a[1] equals 2009 etc. Here is the array breakdown: 0: "2009-04-12T20:44:55" 1: "2009" 2: "04" 3: "12" 4: "20" 5: "44" 6: "55" ...
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Which Java Collection should I use?

...hart does not try and cover things like synchronized access, thread safety etc or the legacy collections, but it does cover the 3 standard Sets, 3 standard Maps and 2 standard Lists. This image was created for this answer and is licensed under a Creative Commons Attribution 4.0 International Lice...
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Anaconda vs. EPD Enthought vs. manual installation of Python [closed]

...f Python packages for scientific computing, data science, web development, etc. It also provides a superior environment tool, conda, which allows to easily switch between environments, even between Python 2 and 3. It is also updated very quickly as soon as a new version of a package is released, and...