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What are Scala context and view bounds?
... other words, A should have an implicit conversion to B available, so that one can call B methods on an object of type A. The most common usage of view bounds in the standard library (before Scala 2.8.0, anyway), is with Ordered, like this:
def f[A <% Ordered[A]](a: A, b: A) = if (a < b) a el...
Debug vs. Release performance
...gful results. "Slower" is meaningless because it is not clear whether it's one microsecond slower or twenty minutes slower. "10% slower under realistic conditions" is more meaningful.
Spend the time you would have spent researching this question online on building a device which answers the quest...
kernel stack and user space stack
...rate ] kernel stack used ?
Separation of privileges and security. For one, userspace programs can make their stack(pointer) anything they want, and there is usually no architectural requirement to even have a valid one. The kernel therefore cannot trust the userspace stackpointer to be valid no...
Differences and relationship between glActiveTexture and glBindTexture
...state of an OpenGL object, you must first bind it to the context. This is done with some from of glBind* call.
The C/C++ equivalent to this is as follows:
Object *g_objs[MAX_LOCATIONS] = {NULL};
void BindObject(int loc, Object *obj)
{
g_objs[loc] = obj;
}
Textures are interesting; they rep...
Why is auto_ptr being deprecated?
...
The direct replacement for auto_ptr (or the closest thing to one anyway) is unique_ptr. As far as the "problem" goes, it's pretty simple: auto_ptr transfers ownership when it's assigned. unique_ptr also transfers ownership, but thanks to codification of move semantics and the magic of ...
Getting parts of a URL (Regex)
...
the further parse 'the rest' to be as specific as possible. Doing it in one regex is, well, a bit crazy.
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Incrementing a date in JavaScript
I need to increment a date value by one day in JavaScript.
16 Answers
16
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Compare object instances for equality by their attributes
...e that in Python 2.5 and onwards, the class must define __eq__(), but only one of __lt__(), __le__(), __gt__(), or __ge__() is needed in addition to that. From that, Python can infer the other methods. See functools for more information.
– kba
Nov 19 '13 at 1:4...
not:first-child selector
...
One of the versions you posted actually works for all modern browsers (where CSS selectors level 3 are supported):
div ul:not(:first-child) {
background-color: #900;
}
If you need to support legacy browsers, or if you ...
Postgresql - change the size of a varchar column to lower length
...e ALTER TABLE command on a really large table (almost 30 millions rows).
One of its columns is a varchar(255) and I would like to resize it to a varchar(40) .
Basically, I would like to change my column by running the following command:
...