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The modulo operation on negative numbers in Python
...) / 4 = -1.25 --> floor(-1.25) = -2
(-5) % 4 = (-2 × 4 + 3) % 4 = 3.
It is chosen over the C behavior because a nonnegative result is often more useful. An example is to compute week days. If today is Tuesday (day #2), what is the week day N days before? In Python we can compute with
return (2...
How to force a web browser NOT to cache images
I am writing and using a very simple CGI-based (Perl) content management tool for two pro-bono websites. It provides the website administrator with HTML forms for events where they fill the fields (date, place, title, description, links, etc.) and save it. On that form I allow the administrator to u...
How do I speed up the gwt compiler?
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Let's start with the uncomfortable truth: GWT compiler performance is really lousy. You can use some hacks here and there, but you're not going to get significantly better performance.
A nice performance hack you can do is to compile for...
Passing arguments to require (when loading module)
Is it possible to pass arguments when loading a module using require?
3 Answers
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JPA: How to have one-to-many relation of the same Entity type
There's an Entity Class "A". Class A might have children of the same type "A". Also "A" should hold it's parent if it is a child.
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Inheritance and Overriding __init__ in python
I was reading 'Dive Into Python' and in the chapter on classes it gives this example:
5 Answers
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GitHub: How to make a fork of public repository private?
How can I fork a public repository, but make my fork private? I do have the subscription to support private repositories.
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Error: request entity too large
I'm receiving the following error with express:
19 Answers
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Why is sizeof considered an operator?
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Because the C standard says so, and it gets the only vote.
As consequences:
The operand of sizeof can be a parenthesised type, sizeof (int), instead of an object expression.
The parentheses are unnecessary: int a; printf("%d\n", sizeof a); is perfectly fine....
Git commits are duplicated in the same branch after doing a rebase
I understand the scenario presented in Pro Git about The Perils of Rebasing . The author basically tells you how to avoid duplicated commits:
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