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Usage of __slots__?
...ave, with the expected results:
faster attribute access.
space savings in memory.
The space savings is from
Storing value references in slots instead of __dict__.
Denying __dict__ and __weakref__ creation if parent classes deny them and you declare __slots__.
Quick Caveats
Small caveat, you shou...
Append an object to a list in R in amortized constant time, O(1)?
If I have some R list mylist , you can append an item obj to it like so:
17 Answers
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Schema for a multilanguage database
...8, 2))
CREATE TABLE T_PRODUCT_tr (pr_id INT FK, languagecode varchar, pr_name text, pr_descr text)
This way if you have multiple translatable column it would only require a single join to get it + since you are not autogenerating a translationid it may be easier to import items together with their ...
What's so bad about Template Haskell?
...fe, at all, thus going against much of "the spirit of Haskell." Here are some examples of this:
You have no control over what kind of Haskell AST a piece of TH code will generate, beyond where it will appear; you can have a value of type Exp, but you don't know if it is an expression that represen...
Move assignment operator and `if (this != &rhs)`
In the assignment operator of a class, you usually need to check if the object being assigned is the invoking object so you don't screw things up:
...
What is TypeScript and why would I use it in place of JavaScript? [closed]
...aces. One of the big benefits is to enable IDEs to provide a richer environment for spotting common errors as you type the code.
To get an idea of what I mean, watch Microsoft's introductory video on the language.
For a large JavaScript project, adopting TypeScript might result in more robust soft...
Finding current executable's path without /proc/self/exe
It seems to me that Linux has it easy with /proc/self/exe. But I'd like to know if there is a convenient way to find the current application's directory in C/C++ with cross-platform interfaces. I've seen some projects mucking around with argv[0], but it doesn't seem entirely reliable.
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What's the difference between passing by reference vs. passing by value?
... tend to use a different (but similar) pair of techniques to achieve the same effects (see below) which is the primary source of confusion.
A secondary source of confusion is the fact that in "pass by reference", "reference" has a narrower meaning than the general term "reference" (because the phra...
How do I return the response from an asynchronous call?
...solutions below.
The problem
The A in Ajax stands for asynchronous . That means sending the request (or rather receiving the response) is taken out of the normal execution flow. In your example, $.ajax returns immediately and the next statement, return result;, is executed before the function you p...
Bootstrap 3 Slide in Menu / Navbar on Mobile [closed]
...browser-based mobile app and I've decided to use Bootstrap 3 as the css framework for the design. Bootstrap 3 comes with a great "responsive" feature in the navigation bar where it collapses automatically if it detects a specific "break point" regarding the resolution of the browser. It works in a l...