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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
...
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:
I...
UIActivityViewController crashing on iOS 8 iPads
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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...
It is more efficient to use if-return-return or if-else-return?
...sing a switch construct or for Python, enumerating a dict/using a callable/etc.). Therefore almost all if-else-return are cases of guard clauses and those are always testable (mock the tested expression) without the else.
– cowbert
Mar 28 '18 at 3:22
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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
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Rails Observer Alternatives for 4.0
...cation (consider nested forms, model business logic updating associations, etc.)
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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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How do I format a Microsoft JSON date?
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@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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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...
How can jQuery deferred be used?
...ore it's returned immediately from the cache. Otherwise, an AJAX request fetches the data and adds it to the cache. The $.when/.then doesn't care about any of this; all you need to be concerned about is using the response, which is passed to the .then() handler in both cases. jQuery.when() handles...