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How to test chrome extensions?
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How to unset a JavaScript variable?
...ions to delete as with any language, if you care enough you should read:
https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Operators/Special_Operators/delete_Operator
http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-262.pdf
...
Random string generation with upper case letters and digits
...case + string.digits, k=N))
A cryptographically more secure version; see https://stackoverflow.com/a/23728630/2213647:
''.join(random.SystemRandom().choice(string.ascii_uppercase + string.digits) for _ in range(N))
In details, with a clean function for further reuse:
>>> import string...
Given a number, find the next higher number which has the exact same set of digits as the original n
...(str(ii))) if v>ii)
In C++ you could make the permutations like this: https://stackoverflow.com/a/9243091/1149664 (It's the same algorithm as the one in itertools)
Here's an implementation of the top answer described by Weeble and BlueRaja, (other answers). I doubt there's anything better.
de...
Does SQLAlchemy have an equivalent of Django's get_or_create?
... so it does not look like they try to handle this. Looking at the [source](https://github.com/django/django/blob/master/django/db/models/query.py#L491) confirms this. I'm not sure I understand your reply, you mean the user should put his/her query in a nested transaction? It's not clear to me how a ...
What's the reason I can't create generic array types in Java?
...ype.
I skipped some parts of this answers you can read full article here:
https://dzone.com/articles/covariance-and-contravariance
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How to debug Google Apps Script (aka where does Logger.log log to?)
...nd sweet solutions:
Use console.log("Hello World") in your script.
Go to https://script.google.com/home/my and select your add-on.
Click on the ellipsis menu on Project Details, select Executions.
Click on the header of the latest execution and read the log.
...
What is the common header format of Python files?
....
And a very simple documentation. It can fill multiple lines.
See also: https://www.python.org/dev/peps/pep-0263/
If you just write a class in each file, you don't even need the documentation (it would go inside the class doc).
...
Do subclasses inherit private fields?
...e Java Language Specification (currently 3rd edition).
As the JLS states (https://docs.oracle.com/javase/specs/jls/se8/html/jls-8.html#jls-8.2):
Members of a class that are declared
private are not inherited by
subclasses of that class. Only members
of a class that are declared protecte...
What's the difference between getPath(), getAbsolutePath(), and getCanonicalPath() in Java?
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