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getApplicationContext(), getBaseContext(), getApplication(), getParent()
...pplicationContext() Application context is associated with the Application and will always be the same throughout the life cycle.
getBasecontext() should not be used, just use Context instead of it which is associated with the activity and can be destroyed when the activity is destroyed.
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How to run test cases in a specified file?
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There are two ways. The easy one is to use the -run flag and provide a pattern matching names of the tests you want to run.
Example:
$ go test -run NameOfTest
See the docs for more info.
The other way is to name the specific file, containing the tests you want to run:
$ go te...
Number of elements in a javascript object
... implementations might keep track of such a value internally, there's no standard way to get it.
In the past, Mozilla's Javascript variant exposed the non-standard __count__, but it has been removed with version 1.8.5.
For cross-browser scripting you're stuck with explicitly iterating over the pro...
Properly close mongoose's connection once you're done
I'm using mongoose in a script that is not meant to run continuously, and I'm facing what seems to be a very simple issue yet I can't find an answer; simply put once I make a call to any mongoose function that sends requests to mongodb my nodejs instance never stops and I have to kill it manually wi...
SQLAlchemy default DateTime
...rk latency is variable, clients experience slightly different clock drift, and different programming languages occasionally calculate time slightly differently.
SQLAlchemy allows you to do this by passing func.now() or func.current_timestamp() (they are aliases of each other) which tells the DB to c...
How to compile and run C/C++ in a Unix console/Mac terminal?
...utable as the shell will only search what is in $PATH to find executables, and most often that does not include the current directory (.).
So to run the built executable foo:
./foo
share
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improv...
How to convert index of a pandas dataframe into a column?
...26 C 2 0.0139
2016-02-27 A 2 0.5577
2016-02-28 C 6 0.0303
and you want to convert the 1st (tick) and 3rd (obs) levels in the index into columns, you would do:
>>> df.reset_index(level=['tick', 'obs'])
tick obs val
tag
C 2016-02-26 ...
Rails: around_* callbacks
...api.rubyonrails.org/classes/ActiveRecord/Callbacks.html , but don't understand when the around_* callbacks are triggered in relation to before_* and after_* .
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How do I exit from the text window in Git?
I am using Windows and before committing, Git wants me to enter a text message and a new text window appears.
7 Answers
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How to determine when Fragment becomes visible in ViewPager
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Thanks to today's Android Support Library update (rev 11), the user visible hint issue is finally fixed. It's now safe to use user visible hint for ViewPager.
– Oasis Feng
Nov 14 '12 at 3:05
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