大约有 43,000 项符合查询结果（耗时：0.0258秒） [XML]
What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?
...
GCC has:
-- Built-in Function: int __builtin_clz (unsigned int x)
Returns the number of leading 0-bits in X, starting at the most
significant bit position. If X is 0, the result is undefined.
-- Built-in Function: int __builtin_clzl (unsigned long...
How do I check for C++11 support?
...
There is a constant named __cplusplus that C++ compilers should set to the version of the C++ standard supported see this
#if __cplusplus <= 199711L
#error This library needs at least a C++11 compliant compiler
#endif
It is set to 199711L in V...
Is “argv[0] = name-of-executable” an accepted standard or just a common convention?
...rgv[argc-1] represent the program parameters.
I've also used:
#if defined(_WIN32)
static size_t getExecutablePathName(char* pathName, size_t pathNameCapacity)
{
return GetModuleFileNameA(NULL, pathName, (DWORD)pathNameCapacity);
}
#elif defined(__linux__) /* elif of: #if defined(_WIN32) *...
Redirecting from HTTP to HTTPS with PHP
...
Try something like this (should work for Apache and IIS):
if (empty($_SERVER['HTTPS']) || $_SERVER['HTTPS'] === "off") {
$location = 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
header('HTTP/1.1 301 Moved Permanently');
header('Location: ' . $location);
exit;
}...
What is the use of join() in Python threading?
... @Aviator45003: Yes, by using the timeout argument like: demon_thread.join(0.0), join() is by default blocking without regard to the daemonized attribute. But joining a demonized thread opens most likely a whole can of trouble! I'm now considering to remove the join() call in my little ...
Is there a simple way to convert C++ enum to string?
...to check out GCCXML.
Running GCCXML on your sample code produces:
<GCC_XML>
<Namespace id="_1" name="::" members="_3 " mangled="_Z2::"/>
<Namespace id="_2" name="std" context="_1" members="" mangled="_Z3std"/>
<Enumeration id="_3" name="MyEnum" context="_1" location="f0:...
How to automatically remove trailing whitespace in Visual Studio 2008?
...r your macros.
Private saved As Boolean = False
Private Sub DocumentEvents_DocumentSaved(ByVal document As EnvDTE.Document) _
Handles DocumentEvents.DocumentSaved
If Not saved Then
Try
DTE.Find.FindReplace(vsFindAction.vsFindActionRep...
Why does “pip install” inside Python raise a SyntaxError?
...stalled package so this is the right way of using the API: subprocess.check_call([sys.executable, '-m', 'pip', 'install', 'SomeProject']) but since Python allows to access internal API and you know what you're using the API for you may want to use internal API anyway eg. if you're building own GUI p...
Mediator Vs Observer Object-Oriented Design Patterns
...o has access to it)
function Person(name) {
let self = this;
this._name = name;
this._chat = null;
this._receive(from, message) {
console.log("{0}: '{1}'".format(from.name(), message));
}
this._send(to, message) {
this._chat.message(this, to, message...
Measuring elapsed time with the Time module
...
start_time = time.time()
# your code
elapsed_time = time.time() - start_time
You can also write simple decorator to simplify measurement of execution time of various functions:
import time
from functools import wraps
PROF_DATA...