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How can I represent an 'Enum' in Python?
...m techniques try the aenum library (2.7, 3.3+, same author as enum34. Code is not perfectly compatible between py2 and py3, e.g. you'll need __order__ in python 2).
To use enum34, do $ pip install enum34
To use aenum, do $ pip install aenum
Installing enum (no numbers) will install a completely ...
How to convert String object to Boolean Object?
...oolean boolean2 = Boolean.parseBoolean("true");
Advantage:
Boolean: this does not create new instances of Boolean, so performance is better (and less garbage-collection). It reuses the two instances of either Boolean.TRUE or Boolean.FALSE.
boolean: no instance is needed, you use the primitive t...
Android: install .apk programmatically [duplicate]
I made this with help from
Android download binary file problems
and Install Application programmatically on Android .
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How is Pythons glob.glob ordered?
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It is probably not sorted at all and uses the order at which entries appear in the filesystem, i.e. the one you get when using ls -U. (At least on my machine this produces the same order as listing glob matches).
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How to redirect and append both stdout and stderr to a file with Bash?
...e and redirect stdout there.
2>&1: Redirect stderr to "where stdout is currently going". In this case, that is a file opened in append mode. In other words, the &1 reuses the file descriptor which stdout currently uses.
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Resetting generator object in Python
... have a generator object returned by multiple yield. Preparation to call this generator is rather time-consuming operation. That is why I want to reuse the generator several times.
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Python syntax for “if a or b or c but not all of them”
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If you mean a minimal form, go with this:
if (not a or not b or not c) and (a or b or c):
Which translates the title of your question.
UPDATE: as correctly said by Volatility and Supr, you can apply De Morgan's law and obtain equivalent:
if (a or b or c) and...
How to decorate a class?
In Python 2.5, is there a way to create a decorator that decorates a class? Specifically, I want to use a decorator to add a member to a class and change the constructor to take a value for that member.
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Should we @Override an interface's method implementation?
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You should use @Override whenever possible. It prevents simple mistakes from being made. Example:
class C {
@Override
public boolean equals(SomeClass obj){
// code ...
}
}
This doesn't compile because it doesn't properly override public boolean equals(Object obj).
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Are booleans as method arguments unacceptable? [closed]
...f-explanatory.
But if it's a choice between two options, neither of which is clearly yes or no, then an enum can sometimes be more readable.
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