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How to unmount a busy device
...got some samba drives that are being accessed by multiple users daily. I already have code to recognize shared drives (from a SQL table) and mount them in a special directory where all users can access them.
...
How slow are .NET exceptions?
...er side claims (with benchmark test) that the speed is not the issue. I've read numerous blogs, articles, and posts pertaining one side or the other. So which is it?
...
Environment variables in Mac OS X
...the machine (assuming they use bash).
~/.MacOSX/environment.plist: this is read by loginwindow on login. It applies to all applications, including GUI ones, except those launched by Spotlight in 10.5 (not 10.6). It requires you to logout and login again for changes to take effect. This file is no lo...
Why is quicksort better than mergesort?
...esign. However, other things – such as locality of reference (i.e. do we read lots of elements which are probably in cache?) – also play an important role on current hardware. Quicksort in particular requires little additional space and exhibits good cache locality, and this makes it faster than...
How to calculate md5 hash of a file using javascript
...plementations of the MD5 algorithm, older browsers are generally unable to read files from the local filesystem.
I wrote that in 2009. So what about new browsers?
With a browser that supports the FileAPI, you *can * read the contents of a file - the user has to have selected it, either with an <...
How do I forward declare an inner class? [duplicate]
...mplates:
// Foo.h
struct Foo
{
export template<class T> void Read(T it);
};
// Foo.cpp
#include "Foo.h"
#include "Container.h"
/*
struct Container
{
struct Inner { };
};
*/
export template<>
void Foo::Read<Container::Inner>(Container::Inner& it)
{
}
#inc...
WSAAsyncSelect模型 - C/C++ - 清泛网 - 专注C/C++及内核技术
...IEvent //指定哪些通知码需要发送
//FD_READ可以读套接字
//FD_WRITE 可以写套接字
//FD_ACCEPT 监听套接字有连接接入
//FD_CONNET 如果套接字连接对方主机，连...
APP INVENTOR硬件交互学习教程03——巧借arduino nano 配置HC-05 - 创客硬...
...intln("Enter AT commands!");
}
void loop() {
// read from port 1, send to port 0:
if (EEBlue.available()) {
int inByte = EEBlue.read();
Serial.write(inByte);
}
// read from port 0, send to port 1:
&nbs...
dd: How to calculate optimal blocksize? [closed]
...
(Note: The unit of the transfer rates will vary by OS)
To test optimal read block size, you could use more or less the same process,
but instead of reading from /dev/zero and writing to the disk, you'd read from
the disk and write to /dev/null. A script to do this might look like so:
dd_ibs_tes...
Database sharding vs partitioning
I have been reading about scalable architectures recently. In that context, two words that keep on showing up with regards to databases are sharding and partitioning . I looked up descriptions but still ended up confused.
...