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Why do we use __init__ in Python classes?
... above..couldn't the developer just have added in his main code 'left=foo',etc..
– Lostsoul
Dec 22 '11 at 20:10
You me...
“Keep Me Logged In” - the best approach
... hash_hmac('sha256', $cookie, SECRET_KEY);
$cookie .= ':' . $mac;
setcookie('rememberme', $cookie);
}
Then, to validate:
function rememberMe() {
$cookie = isset($_COOKIE['rememberme']) ? $_COOKIE['rememberme'] : '';
if ($cookie) {
list ($user, $token, $mac) = explode(':', ...
Detecting Unsaved Changes
...
I like the approach of comparing defaultValue etc properties rather than setting a dirty bit. This means that if someone changes a field, then changes it back, then the form will not report as dirty.
– thelem
Jun 26 '14 at 15:04
...
What does O(log n) mean exactly?
...roportionally...and the same goes for, for example, quadratic time O(n2) etc..even algorithms, such as permutation generators, with O(n!) times, that grow by factorials.
...
Is “argv[0] = name-of-executable” an accepted standard or just a common convention?
...ard is limited in what it can say because it doesn't know about 'execve()' etc. The POSIX standard (opengroup.org/onlinepubs/9699919799/functions/execve.html) has more to say - making it clear that what is in argv[0] is at the whim of the process the executes the 'execve()' (or related) system call...
How to detect reliably Mac OS X, iOS, Linux, Windows in C preprocessor? [duplicate]
...g for Windows (32-bit only)
#endif
#elif __APPLE__
#include <TargetConditionals.h>
#if TARGET_IPHONE_SIMULATOR
// iOS Simulator
#elif TARGET_OS_IPHONE
// iOS device
#elif TARGET_OS_MAC
// Other kinds of Mac OS
#else
# error "Unknown Apple p...
vc/mfc *通配符 批量删除文件 - C/C++ - 清泛网 - 专注C/C++及内核技术
...0'也一样，笔者亲测，删除有时成功有时失败。
改用C++的FindNextFile，支持 * 通配符查找文件，核心代码如下：
WIN32_FIND_DATA FindFileData;
char szCurPath[MAX_PATH + 1] = { 0 };
GetCurrentDirectory(MAX_PATH, szCurPath);
CString findFileName;
findFileName....
【解决】模拟器启动失败：ERROR: x86_64 emulation currently requires har...
...SDK\extras\intel\Hardware_Accelerated_Execution_Manager
在线版下载后的目录是：Emulator\from-Android-SDK\extras\intel\Hardware_Accelerated_Execution_Manager
安装：haxm-7.6.5-setup.exe
如果报错，请参考：https://bbs.tsingfun.com/thread-2030-1-1.html
Printf width specifier to maintain precision of floating-point value
...guous-ness needs 17 as the precision changes in a binary number (at 2,4,8, etc.) and a decimal number (at 10,100,1000, etc.) are never at the same number (except 1.0). Example: the 2 double values just above 0.1 : 1.000_0000_0000_0000_2e-01, 1.000_0000_0000_0000_3e-01 need 17 digits to distinguish....
What is the 'new' keyword in JavaScript?
...ral (functions default to Function.prototype, numbers to Number.prototype, etc.). It can only be read with Object.getPrototypeOf(someObject). There is no other way to set or read this value.
Functions, in addition to the hidden [[prototype]] property, also have a property called prototype, and it i...