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What does the “at” (@) symbol do in Python?
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An @ symbol at the beginning of a line is used for class, function and method decorators.
Read more here:
PEP 318: Decorators
Python Decorators
The most common Python decorators you'll run into are:
@property
@classmethod
@staticmethod
If you see an @ in the middle of a line, that's ...
Moving Files into a Real Folder in Xcode
...sing the browser in Xcode to access everything, stuff was nicely organized and I was happy.
12 Answers
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How to create a private class method?
... disgusting it is definitely not.
It makes perfect sense once you understand Ruby's object model and the corresponding method lookup flow, especially when taking into consideration that private is NOT an access/visibility modifier, but actually a method call (with the class as its recipient) as di...
What is opinionated software?
...ve that a template system shouldn't provide access to user defined methods and functions as it leaves the system open to returning raw HTML. So an opinionated framework developer only allows access to data structures. By design, the software is limiting and encourages the designer into doing things ...
Refreshing web page by WebDriver when waiting for specific condition
... though. driver.navigate().refresh() in its request header says "no-cache" and, as a result, unconditionally reloads all content. Whereas pressing F5 could result in a "If-Modified-Since" request, that could get a "304 Not Modified" response. You have to keep that difference in mind, if you do load ...
How does Go compile so quickly?
I've Googled and poked around the Go website, but I can't seem to find an explanation for Go's extraordinary build times. Are they products of the language features (or lack thereof), a highly optimized compiler, or something else? I'm not trying to promote Go; I'm just curious.
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When do items in HTML5 local storage expire?
...ou can explicitly include some sort of timestamp in what you've got saved, and then use that later to decide whether or not information should be flushed.
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What is CMake equivalent of 'configure --prefix=DIR && make all install '?
....cmake
Finally, you can specify the install prefix at configure-time, and then build and install in one step as follows:
$ cd build
$ cmake -DCMAKE_INSTALL_PREFIX:PATH=/path/to/install /path/to/src
$ cmake --build . --target install
You would either add --config Release to the third command ...
Task not serializable: java.io.NotSerializableException when calling function outside closure only o
...sk to fail. Now this doesn't mean that you can serialise an RDD with Spark and avoid NotSerializableException
Spark is a distributed computing engine and its main abstraction is a resilient distributed dataset (RDD), which can be viewed as a distributed collection. Basically, RDD's elements are par...
Google Maps Android API v2 Authorization failure
...te project at https://code.google.com/apis/console/
to enable "Google Maps Android API v2"
to register of SHA1 in project (NOW, YOU NEED WRITE SHA1;your.app.package.name) at APIs console and get API KEY
to copy directory ANDROID_SDK_DIR/extras/google/google_play_services/libproject/google-play-serv...