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How to install Google Play Services in a Genymotion VM (with no drag and drop support)?
...Apps. To install Google Apps:
Upgrade Genymotion and VirtualBox to the latest version.
Download two zip files:
- ARM Translation Installer v1.1
- Google Apps for your Android version: 2.3.7 - 4.4.4 or 4.4 - 6.0 (with platform and variant) You can also find the GApps list in the wbroek user GitHu...
Are static methods inherited in Java?
...m.out.println("Inside static method of this class");
}
}
public class Test {
public static void main(String[] args) {
B b = new B();
// prints: Inside static method of this class
b.display();
A a = new B();
// prints: Inside static method of supercla...
How to find the largest file in a directory and its subdirectories?
...
outputs
-rw-r--r-- 1 nneonneo staff 9274991 Apr 11 02:29 ./devel/misc/test.out
If you just want the filename:
find . -type f | xargs ls -1S | head -n 1
This avoids using awk and allows you to use whatever flags you want in ls.
Caveat. Because xargs tries to avoid building overlong command...
Is the C# static constructor thread safe?
...n is thread safe for the initial construction, that is, no locking or null testing is required for constructing the Singleton object. However, this does not mean that any use of the instance will be synchronised. There are a variety of ways that this can be done; I've shown one below.
public class ...
Python's json module, converts int dictionary keys to strings
... isinstance(v, unicode) else v) for k,v in x.items()}
return x
Which tests the instance of the values and casts them only if they are strings objects (unicode to be exact).
Both functions assumes keys (and values) to be integers.
Thanks to:
How to use if/else in a dictionary comprehension?...
Better techniques for trimming leading zeros in SQL Server?
...
From my testing (and experience) this is a relatively costly operation in comparison with the accepted answer. For performance reasons, it's best to avoid changing data types, or comparing data of different types, if it is within you...
Is there a decorator to simply cache function return values?
...y answer to show a decorator function, which works for methods (I actually tested this one).
– Nathan Kitchen
May 3 '09 at 6:08
1
...
jQuery checkbox event handling
...
There are several useful answers, but none seem to cover all the latest options. To that end all my examples also cater for the presence of matching label elements and also allow you to dynamically add checkboxes and see the results in a side-panel (by redirecting console.log).
Listening f...
How to determine whether a Pandas Column contains a particular value
...
I did a few simple tests:
In [10]: x = pd.Series(range(1000000))
In [13]: timeit 999999 in x.values
567 µs ± 25.6 µs per loop (mean ± std. dev. of 7 runs, 1000 loops each)
In [15]: timeit x.isin([999999]).any()
9.54 ms ± 291 µs per loo...
Does Java have a HashMap with reverse lookup?
... that map, but your last remark only holds true if the corresponding JUnit tests are sloppy :-)
– rsp
Nov 4 '09 at 9:32
...