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What are metaclasses in Python?
...ves. A class is an instance of a metaclass.
While in Python you can use arbitrary callables for metaclasses (like Jerub shows), the better approach is to make it an actual class itself. type is the usual metaclass in Python. type is itself a class, and it is its own type. You won't be able to recre...
How do I use CSS in Django?
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@Chris: You're right, the statement was a bit ambiguous. I was referring to the the Django development server. Although I have run it a few times on our production site, it was only for short periods of time while debugging gnarly problems.
– Pe...
Is .NET/Mono or Java the better choice for cross-platform development? [closed]
...ements parts of the CLR spec that even Microsoft does not support (like 64 bit arrays). One of the most exciting new pieces of technology in the .NET world is Rosylyn. Mono has offered the C# compiler as a service for many years. Some of what Rosylyn offers is available via NRefractory as well. An e...
How does the bitwise complement operator (~ tilde) work?
...rt. As an example, here's the representation of -2 in two's complement: (8 bits)
1111 1110
The way you get this is by taking the binary representation of a number, taking its complement (inverting all the bits) and adding one. Two starts as 0000 0010, and by inverting the bits we get 1111 1101. Add...
How to get correct timestamp in C#
...x time, but windows filetime.
From the docs:
A Windows file time is a 64-bit value that represents the number of 100-
nanosecond intervals that have elapsed since 12:00 midnight, January 1, 1601
A.D. (C.E.) Coordinated Universal Time (UTC).
...
Literal suffix for byte in .NET?
...? I mean like 5f and 5d . Sure I could write byte x = 5 , but that's a bit inconsequential if you use var for local variables.
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C++, variable declaration in 'if' expression
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@Neutrino At first sight you idea sounds a bit like the SAT-problem, which is not that easy to solve, at least in the general case.
– Christian Rau
Oct 20 '11 at 14:37
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Best way to organize jQuery/JavaScript code (2013) [closed]
...t all your code to be Object Oriented, but if you don't mind refactoring a bit, I'd recommend to add something equivalent with what is called a Module pattern. It looks something like this:
sidebar.js
var Sidebar = (function(){
// functions and vars here are private
var init = function(){
$("#si...
How can I take more control in ASP.NET?
... HTML controls. I haven't implemented the results yet, but that's the easy bit. Nearly there!
– Jon Skeet
Jan 10 '09 at 17:29
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Check if a row exists, otherwise insert
...PK is a bigint, as the internal hashing on SQL Server is degenerate for 64-bit values (different key values may hash to the same lock id).
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