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Do fragments really need an empty constructor?
...g why.
If you check: https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/app/Fragment.java
You will see the instantiate(..) method in the Fragment class calls the newInstance method:
public static Fragment instantiate(Context context, String fname, @Nullable Bundl...
How can I select the first day of a month in SQL?
...
In addition to all the above answer, a way based on a function introduced in sql 2012
SELECT DATEFROMPARTS(YEAR(@mydate),MONTH(@mydate),1)
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What specifically are wall-clock-time, user-cpu-time, and system-cpu-time in UNIX?
I can take a guess based on the names, but what specifically are wall-clock-time, user-cpu-time, and system-cpu-time in UNIX?
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Is python's sorted() function guaranteed to be stable?
...-pass sort in a single-pass one.
For example, if you want to sort objects based on their last_name, first_name attributes, you can do it in one pass:
sorted_list= sorted(
your_sequence_of_items,
key= lambda item: (item.last_name, item.first_name))
taking advantage of tuple comparison.
T...
json.net has key method?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Getting error: Peer authentication failed for user “postgres”, when trying to get pgsql working with
...erating system user name from the kernel and using it as the allowed
database user name (with optional user name mapping). This method is
only supported on local connections.
Password authentication
The password-based authentication methods are md5 and password. These
methods operate sim...
Android Preferences: How to load the default values when the user hasn't used the preferences-screen
...al shared-prefs files, i.e. android is creating several shared-prefs files based on your configuration or messy code.
– Hack06
Mar 22 '18 at 21:00
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How do I type using my keyboard on the iphone simulator?
...might be a feature, from Apple point of view, to allow to swap between tap based input or external hardware
– Bogdan
Apr 17 '15 at 8:17
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sh...
Nested defaultdict of defaultdict
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I based this of Andrew's answer here.
If you are looking to load data from a json or an existing dict into the nester defaultdict see this example:
def nested_defaultdict(existing=None, **kwargs):
if existing is None:
...
Shell script “for” loop syntax
... @Flow: Hm, I just tried it on a couple of systems (Linux and BSD based) with #!/bin/sh and it worked fine. Invoked under bash and specifically under /bin/sh, still worked. Maybe the version of sh matters? Are you on some old Unix?
– system PAUSE
Mar 2...