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GCD to perform task in main thread
...are on the main thread, the behaviour is the same: the block is scheduled, and executed when the run loop of the main thread is run.
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How does a garbage collector avoid an infinite loop here?
...kes dramatically under 40 seconds per object. That a new object is created and then eligible for finalization is not relevant to the current finalizer.
– Jacob Krall
Jul 10 '14 at 16:09
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In Git, what is the difference between origin/master vs origin master?
I know, origin is a term for the remote repository and master is the branch there.
6 Answers
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Remove/hide a preference from the screen
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Yes, if you have a reference to both the Preference, and its parent (a PreferenceCategory, or PreferenceScreen)
myPreferenceScreen.removePreference(myPreference);
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How to remove unused imports from Eclipse
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How about Android Studio?
– user2742371
Mar 1 '14 at 23:49
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Detect if a NumPy array contains at least one non-numeric value?
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This should be faster than iterating and will work regardless of shape.
numpy.isnan(myarray).any()
Edit: 30x faster:
import timeit
s = 'import numpy;a = numpy.arange(10000.).reshape((100,100));a[10,10]=numpy.nan'
ms = [
'numpy.isnan(a).any()',
'any(n...
How to write into a file in PHP?
...s($filename, $content);
which is identical to calling fopen(), fwrite(), and fclose() successively to write data to a file.
Docs: file_put_contents
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Set Django IntegerField by choices=… name
...bject. Hard to find with Google too so thanks.
– Alexander Ljungberg
Jul 13 '09 at 13:54
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FWIW, ...
Remove portion of a string after a certain character
...n plain english: Give me the part of the string starting at the beginning and ending at the position where you first encounter the deliminator.
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java.lang.OutOfMemoryError: GC overhead limit exceeded [duplicate]
... am getting this error in a program that creates several (hundreds of thousands) HashMap objects with a few (15-20) text entries each. These Strings have all to be collected (without breaking up into smaller amounts) before being submitted to a database.
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