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How to split a string literal across multiple lines in C / Objective-C?
...
There are two ways to split strings over multiple lines:
Using \
All lines in C can be split into multiple lines using \.
Plain C:
char *my_string = "Line 1 \
Line 2";
Objective-C:
NSString *my_string = @"Line1 \
...
构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...对域名、目录结构、正则规则针对http做一些分流。通过端口检测到服务器内部的故障，比如根据服务器处理网页返回的状态码、超时等等，并且会把返回错误的请求重新提交到另一个节点，不过其中缺点就是不支持url来检测。...
Will using 'var' affect performance?
...icit type. So for example, var x = new List<List<Dictionary<int, string>()>()>() would be acceptable, but var x = 42 is somewhat ambiguous and should be written as int x = 42. But to each their own...
– Nelson Rothermel
May 9 '12 at 17:26
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CentOS+Nginx+PHP+MySQL详细配置(图解) - 更多技术 - 清泛网 - 专注C/C++及内核技术
...请求传达给PHP，Nginx在得到*.php请求时，会把请求通过9000端口传给PHP。下面我们把这些注释给去掉即可，如下图
注：上面的/usr/local/nginx/html 是我们PHP网站放置的路径
那么只有Nginx自己知道咋找PHP了还不行，还需要PHP知...
C++ lambda with captures as a function pointer
...ath)> callback) {
return callback(fpath);
}
int main()
{
vector<string> entries;
std::function<int (const char *fpath)> callback = [&](const char *fpath) -> int {
entries.push_back(fpath);
return 0;
};
int ret = ftw("/etc", callback);
for (auto entry : e...
What is the difference between char, nchar, varchar, and nvarchar in SQL Server?
...r and nchar will always use a fixed amount of storage space, even when the string to be stored is smaller than the available space, whereas varchar and nvarchar will use only as much storage space as is needed to store that string (plus two bytes of overhead, presumably to store the string length). ...
ADB Shell Input Events
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By adb shell input keyevent, either an event_code or a string will be sent to the device.
usage: input [text|keyevent]
input text <string>
input keyevent <event_code>
Some possible values for event_code are:
0 --> "KEYCODE_UNKNOWN"
1 --> "KEYCODE_MENU...
CentOS+Nginx+PHP+MySQL详细配置(图解) - PHP - 清泛IT论坛，有思想、有深度
...请求传达给PHP，Nginx在得到*.php请求时，会把请求通过9000端口传给PHP。下面我们把这些注释给去掉即可，如下图
注：上面的/usr/local/nginx/html 是我们PHP网站放置的路径
那么只有Nginx自己知道咋找PHP了还不行...
Conveniently Declaring Compile-Time Strings in C++
Being able to create and manipulate strings during compile-time in C++ has several useful applications. Although it is possible to create compile-time strings in C++, the process is very cumbersome, as the string needs to be declared as a variadic sequence of characters, e.g.
...
Inline labels in Matplotlib
...some caveats:
it does not work in all cases
it requires a fair amount of extra code
it may vary considerably from one plot to the next
A much simpler approach is to annotate the last point of each plot. The point can also be circled, for emphasis. This can be accomplished with one extra line:
f...