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What is the difference between 'java', 'javaw', and 'javaws'?
What is the difference between java , javaw , and javaws ?
5 Answers
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How do I prevent an Android device from going to sleep programmatically?
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One option is to use a wake lock. Example from the docs:
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, "My Tag");
wl.acquire();
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How do I check (at runtime) if one class is a subclass of another?
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You can use issubclass() like this assert issubclass(suit, Suit).
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Circular (or cyclic) imports in Python
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There was a really good discussion on this over at comp.lang.python last year. It answers your question pretty thoroughly.
Imports are pretty straightforward really. Just remember the following:
'import' and 'from xxx import yyy' are executa...
How to avoid overflow in expr. A * B - C * D
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This seems too trivial I guess.
But A*B is the one that could overflow.
You could do the following, without losing precision
A*B - C*D = A(D+E) - (A+F)D
= AD + AE - AD - DF
= AE - DF
^smaller ...
How to use a RELATIVE path with AuthUserFile in htaccess?
...ss that uses basic authentication. It seems the path to the .htpasswd file isn't relative to the htaccess file, but instead to the server config.
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Elastic Search: how to see the indexed data
...e the indexed data? It would be useful to check if the actual indexed data is wrong.
8 Answers
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Relational Database Design Patterns? [closed]
...n Fowler's Signature Series called Refactoring Databases. That provides a list of techniques for refactoring databases. I can't say I've heard a list of database patterns so much.
I would also highly recommend David C. Hay's Data Model Patterns and the follow up A Metadata Map which builds on the f...
NSUserDefaults - How to tell if a key exists
...king on a small iPhone app, and I am using NSUserDefaults as my data persistence. It only has to keep track of a few things, such as some names and some numbers so I figure I might as well keep it simple.
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How do you normalize a file path in Bash?
...e from the path, "dirname" and "basename" are your friends, and "realpath" is handy too.
dirname /foo/bar/baz
# /foo/bar
basename /foo/bar/baz
# baz
dirname $( dirname /foo/bar/baz )
# /foo
realpath ../foo
# ../foo: No such file or directory
realpath /tmp/../tmp/../tmp
# /tmp
realpath alte...