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When to use pip requirements file versus install_requires in setup.py?
I'm using pip with virtualenv to package and install some Python libraries.
4 Answers
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Android Preferences: How to load the default values when the user hasn't used the preferences-screen
...means this will only set the default values if this method has never been called in the past so you don't need to worry about overriding the user's settings each time your Activity is created
Take a look into PreferenceManager.setDefaultValues in Android API for further investigation.
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JavaScript DOM remove element
...e's a slightly more succinct way of removing an element from the DOM than calling .removeChild(element) on its parent, which is to just call element.remove(). In due course, this will probably become the standard and idiomatic way of removing an element from the DOM.
The .remove() method was added ...
How to read the Stock CPU Usage data
... screen, showing how much the CPU is being used. The top red bar shows overall CPU usage, and the green bar underneath it shows the CPU time spent in compositing the screen. Note: You cannot turn this feature off once it is on, without restarting the emulator. developer.android.com/tools/debugging/...
How to override trait function and call it from the overridden function?
...The trait is not a class. You can't access its members directly. It's basically just automated copy and paste...
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Reset PHP Array Index
... answered Jun 7 '19 at 4:52
Allan MwesigwaAllan Mwesigwa
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See what has been installed via MacPorts
Is there a way to see all I have installed via MacPorts?
1 Answer
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Simple way to transpose columns and rows in SQL?
...u do not have access to those functions this can be replicated using UNION ALL to UNPIVOT and then an aggregate function with a CASE statement to PIVOT:
Create Table:
CREATE TABLE yourTable([color] varchar(5), [Paul] int, [John] int, [Tim] int, [Eric] int);
INSERT INTO yourTable
([color], [Pa...
Does const mean thread-safe in C++11?
...:
[17.6.5.9/1]
This section specifies requirements that implementations shall meet to prevent data races (1.10). Every standard library function shall meet each requirement unless otherwise specified. Implementations may prevent data races in cases other than those specified below.
[17.6.5.9/3]
A C...
Mapping many-to-many association table with extra column(s)
...ou don't put any cascade on your relationships, then you must persist/save all the entities. Although only the owning side of the relationship (here, the UserService side) must be initialized, it's also a good practice to make sure both sides are in coherence.
User user = new User();
Service servi...