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Random number generation in C++11: how to generate, how does it work? [closed]
...entire sequence of "random" numbers, so a) use a different one (e.g. taken from /dev/urandom) each time, and b) store the seed if you wish to recreate a sequence of random choices.
#include <random>
typedef std::mt19937 MyRNG; // the Mersenne Twister with a popular choice of parameters
uint...
How to get a reference to current module's attributes in Python
...tion or method, this is the module
where it is defined, not the module
from which it is called).
http://docs.python.org/library/functions.html#globals
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What's your most controversial programming opinion?
...rogrammers do nothing else than programming, but they do more than program from 9 to 5)
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edited Apr 17 '10 at 22:34
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Hash and salt passwords in C#
...o its string representation you can use Convert.ToBase64String and Convert.FromBase64String to convert it back.
You should note that you cannot use the equality operator on byte arrays, it checks references and so you should simply loop through both arrays checking each byte thus
public static boo...
How do I get PHP errors to display?
... errors you need to:
1. Have these lines in the PHP script you're calling from the browser (typically index.php):
error_reporting(E_ALL);
ini_set('display_errors', '1');
2.(a) Make sure that this script has no syntax errors
—or—
2.(b) Set display_errors = On in your php.ini
Otherwise, it ...
Difference between Arrays.asList(array) and new ArrayList(Arrays.asList(array))
...operations aren't allowed on the wrapper, like adding or removing elements from the list, you can only read or overwrite the elements.
Note that the list wrapper doesn't extend ArrayList - it's a different kind of object. ArrayLists have their own, internal array, in which they store their elements...
SQL Data Reader - handling Null column values
I'm using a SQLdatareader to build POCOs from a database. The code works except when it encounters a null value in the database. For example, if the FirstName column in the database contains a null value, an exception is thrown.
...
Loading Backbone and Underscore using RequireJS
...mple to use: (1) one states the dependencies (deps), if any, (which may be from the paths configuration, or may be valid paths themselves). (2) (optionally) specify the global variable name from the file you're shimming, which should be exported to your module functions that require it. (If you don'...
How to check if the string is empty?
...
From PEP 8, in the “Programming Recommendations” section:
For sequences, (strings, lists, tuples), use the fact that empty sequences are false.
So you should use:
if not some_string:
or:
if some_string:
Just t...
C++: const reference, before vs after type-specifier
...le
Regarding which you should prefer stylistically, however, I'll dissent from a lot of the other answers and prefer const T& (and const T*):
const T& is the style used in Stroustrup's The C++ Programming Language book.
const T& is the style used in the C++ standard itself.
const T* i...