大约有 7,910 项符合查询结果（耗时：0.0473秒） [XML]
Move assignment operator and `if (this != &rhs)`
...is to build the fastest operations in at the lowest level, and then to add API on top of that for fuller features at more expense. I.e. you need the strong exception guarantee, fine, you pay for it. You don't need it? Here's a faster solution.
Let's get concrete: Here's the fast, basic exceptio...
C++ performance vs. Java/C#
...ode (e.g. a generic parser from string to type T, calling standard library API for types T it recognizes, and making the parser easily extensible by its user) is very easy and very efficient, whereas the equivalent in Java or C# is painful at best to write, and will always be slower and resolved at ...
Finding current executable's path without /proc/self/exe
...ry by Gregory Pakosz implements this for a variety of platforms, using the APIs mentioned in mark4o's post. This is most interesting if you "just" need a solution that works for a portable project and are not interested in the peculiarities of the various platforms.
At the time of writing, supported...
Refresh image with a new one at the same url
...rver, bypassing/refreshing the cache.
// due to limitations of the browser API, this actually requires TWO load attempts - an initial load into a hidden iframe, and then a call to iframe.contentWindow.location.reload(true);
// If image is from a different domain (i.e. cross-domain restrictions are i...
Unicode equivalents for \w and \b in Java regular expressions?
...d together the code duplication
provide a clearer interface regarding unescaping string escapes versus augmenting regex escapes
provide some flexibility in the \d expansion, and maybe the \b
provide convenience methods that handle turning around and calling Pattern.compile or String.matches or whatn...
When to use volatile with multi threading?
...her via explicit flushes, you'd typically use MPI or other message-passing API to make the program specify which address ranges need flushing.
Real hardware doesn't run std::thread across cache coherency boundaries:
Some asymmetric ARM chips exist, with shared physical address space but not inn...
C++ project organisation (with gtest, cmake and doxygen)
... test_vector3.cpp
This means that you have a very clearly defined set of API files for your library, and the structure means that clients of your library would do
#include "project/vector3.hpp"
rather than the less explicit
#include "vector3.hpp"
I like the structure of the /src tree to mat...
How to run a program without an operating system?
...mated / general bare metal compilation system, that provides a tiny custom API
share
|
improve this answer
|
follow
|
...
How does PHP 'foreach' actually work?
...For internal classes, actual method calls are avoided by using an internal API that essentially just mirrors the Iterator interface on the C level.
Iteration of arrays and plain objects is significantly more complicated. First of all, it should be noted that in PHP "arrays" are really ordered dicti...
Ship an application with a database
... by calling "this" in activity or getActivity() in fragment
//call this if API level is lower than 17 String appDataPath = "/data/data/" + context.getPackageName() + "/databases/"
String appDataPath = context.getApplicationInfo().dataDir;
File dbFolder = new File(appDataPath + "/databases");//Make...