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Equation (expression) parser with precedence?
...xplanation of the algorithm I just implemented right now. Also you are not converting it to postfix which is also nice. Adding support for parenthesis is very easy too.
– Giorgi
Sep 29 '10 at 21:05
...
How Python web frameworks, WSGI and CGI fit together
...rives.
The reason this is so great is that we can avoid the messy step of converting from a HTTP GET/POST to CGI to Python, and back again on the way out. It's a much more direct, clean and efficient linkage.
It also makes it much easier to have long-running frameworks running behind web servers, ...
C++ equivalent of java's instanceof
...rounds is putting the special behaviour for the class you are checking for into a virtual function on the base class or perhaps introducing something like a visitor where you can introduce specific behaviour for subclasses without changing the interface (except for adding the visitor acceptance inte...
Switching to a TabBar tab view programmatically?
...ion but for Swift 3:
func setTab<T>(_ myClass: T.Type) {
var i: Int = 0
if let controllers = self.tabBarController?.viewControllers {
for controller in controllers {
if let nav = controller as? UINavigationController, nav.topViewController is T {
br...
SQLite in Android How to update a specific row
..._id=?", new String[]{id}). SQLite will automatically fill the fourth param into the "?" in the third param, i.e. the WHERE clause. If your third param contains n "?"s , the fourth param should be a String[] of length n
– CristianoYL
Jul 13 '17 at 17:32
...
How to programmatically clear application data
...ear YOUR_APP_PACKAGE_GOES HERE");
} catch (Exception e) {
e.printStackTrace();
}
}
Warning: the application will force close.
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Comment shortcut Android Studio
...list and return type like this
/**
* @param userId
* @return
*/
public int getSubPlayerCountForUser(String userId){}
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MongoDB与内存 - 大数据 & AI - 清泛网 - 专注IT技能提升
...
shell> cat /proc/$(pidof mongod)/limits | grep stack | awk -F 'size' '{print int($NF)/1024}'
如果Stack过大（比如：10240K）的话没有意义，简单对照命令结果中的Size和Rss：
shell> cat /proc/$(pidof mongod)/smaps | grep 10240 -A 10
所有连接消耗的内存加起来会...
MongoDB与内存 - 大数据 & AI - 清泛网 - 专注IT技能提升
...
shell> cat /proc/$(pidof mongod)/limits | grep stack | awk -F 'size' '{print int($NF)/1024}'
如果Stack过大（比如：10240K）的话没有意义，简单对照命令结果中的Size和Rss：
shell> cat /proc/$(pidof mongod)/smaps | grep 10240 -A 10
所有连接消耗的内存加起来会...
MongoDB与内存 - 大数据 & AI - 清泛网 - 专注IT技能提升
...
shell> cat /proc/$(pidof mongod)/limits | grep stack | awk -F 'size' '{print int($NF)/1024}'
如果Stack过大（比如：10240K）的话没有意义，简单对照命令结果中的Size和Rss：
shell> cat /proc/$(pidof mongod)/smaps | grep 10240 -A 10
所有连接消耗的内存加起来会...