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How to delete a file from SD card?
...at article explaining (4.4+) external storage permissions change.
You can read more about workaround here.
Workaround source code is from this site.
public class MediaFileFunctions
{
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public static boolean deleteViaContentProvider(Context context, ...
postgresql - sql - count of `true` values
...ou always have nullif([boolean expression], false) makes it much easier to read. You can then vary the boolean expression part to be whatever you like, in this case myCol = true to count true values, or myCol = false to count false values, or name='john' to count people called john etc.
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What does the “Just” syntax mean in Haskell?
...u're matching against was constructed.
What Maybe Means
Maybe you were already familiar with how this worked; there's not really any magic to Maybe values, it's just a normal Haskell Algebraic Data Type (ADT). But it's used quite a bit because it effectively "lifts" or extends a type, such as Inte...
Finding out the name of the original repository you cloned from in Git
...two methods are in the Answer are equivalent - it seems git remote -v just reads and writes .git/config.
– flow2k
May 20 '18 at 20:15
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How do I make curl ignore the proxy?
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I assume curl is reading the proxy address from the environment variable http_proxy and that the variable should keep its value. Then in a shell like bash, export http_proxy=''; before a command (or in a shell script) would temporarily change...
Pairs from single list
...fect. You could even make it a one-liner, though perhaps at the expense of readability: izip(*[iter(t)]*size)
– Channing Moore
Dec 18 '14 at 16:56
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How to generate random number in Bash?
... d specifies that the output format should be signed decimal; -N 1 says to read one byte from /dev/urandom.
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How to determine if a process runs inside lxc/Docker?
... with open('/proc/1/cgroup', 'rt') as ifh:
return 'docker' in ifh.read()
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How to extract a substring using regex
... you have to be carefull on when to use it. Regex can be really hard to read, write and debug. Given some context using this could be the better solution.
– Beothorn
Apr 13 '15 at 14:41
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Warning :-Presenting view controllers on detached view controllers is discouraged
...ntroller, should ever add other view controllers views to their own views. Read the view controllers programming guide to learn more on how to use view controllers properly. https://developer.apple.com/library/content/featuredarticles/ViewControllerPGforiPhoneOS/
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