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What's so bad about Template Haskell?
...ven know that TH code can be composed. Did you know that you can write forM_ [''Foo, ''Bar] generateLens? Q is just a monad, so you can use all of the usual functions on it. Some people don't know this, and because of that, they create multiple overloaded versions of essentially the same functions w...
A monad is just a monoid in the category of endofunctors, what's the problem?
...of sets. You can read more about that here: en.wikipedia.org/wiki/Cartesian_product, but the basic idea is that an element of S × T is a pair (s, t), where s ∈ S and t ∈ T. So the signature of the monoidal product • : S × S -> S in this context simply means a function that takes 2 element...
AI2 Keep Awake
...application. Note: The extension does not work in the Companion. The WAKE_LOCK permission is missing there. You may be able to work around it by doing this: Patching the AI2 Companion - additional permissions . It is not guaranteed that the latest versions of the extensions are used in all examp...
Ship an application with a database
...ample below demonstrates how to use either method.
Here is a sample create_database.sql file. It is to be placed in the assets folder of the project for the internal method or copied into the "Execute SQL' of SQLite Manager to create the database for the external method. (NOTE: Notice the comment...
What is a correct mime type for docx, pptx etc?
...mage/vnd.fst", "fvt": "video/vnd.fvt", "fbs": "image/vnd.fastbidsheet", "fe_launch": "application/vnd.denovo.fcselayout-link", "f4v": "video/x-f4v", "flv": "video/x-flv", "fpx": "image/vnd.fpx", "npx": "image/vnd.net-fpx", "flx": "text/vnd.fmi.flexstor", "fli": "video/x-fli", "ftc": "application/vnd...
What is your most productive shortcut with Vim?
... a language. The initial y is a verb. The statement yy is a synonym for y_. The y is doubled up to make it easier to type, since it is such a common operation.
This can also be expressed as dd P (delete the current line and paste a copy back into place; leaving a copy in the anonymous register as ...
What characters can be used for up/down triangle (arrow without stem) for display in HTML?
...ler font.
More Unicode arrows are at:
http://en.wikipedia.org/wiki/Arrow_%28symbol%29#Arrows_in_Unicode
http://en.wikipedia.org/wiki/Geometric_Shapes
Lastly, these arrows are not ASCII, including ↑ and ↓: they are Unicode.
...
Python base64 data decode
...
import base64
coded_string = '''Q5YACgA...'''
base64.b64decode(coded_string)
worked for me. At the risk of pasting an offensively-long result, I got:
>>> base64.b64decode(coded_string)
2: 'C\x96\x00\n\x00\x00\x00\x00C\x96\x00\x1b\x0...
What is move semantics?
...ng
{
char* data;
public:
string(const char* p)
{
size_t size = std::strlen(p) + 1;
data = new char[size];
std::memcpy(data, p, size);
}
Since we chose to manage the memory ourselves, we need to follow the rule of three. I am going to defer writing the assi...
Is CSS Turing complete?
... none !important; }
<p><a href="http://en.wikipedia.org/wiki/Rule_110">Rule 110</a> in (webkit) CSS, proving Turing-completeness.</p>
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