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What are the differences between a HashMap and a Hashtable in Java?
...shMap better for non-threaded applications, as unsynchronized Objects typically perform better than synchronized ones.
Hashtable does not allow null keys or values. HashMap allows one null key and any number of null values.
One of HashMap's subclasses is LinkedHashMap, so in the event that you'd wa...
Using `textField:shouldChangeCharactersInRange:`, how do I get the text including the current typed
...the accepted answer, the following should work in Swift 3:
func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
let newString = NSString(string: textField.text!).replacingCharacters(in: range, with: string)
return...
9个常用iptables配置实例 - 更多技术 - 清泛网 - 专注C/C++及内核技术
9个常用iptables配置实例iptables命令可用于配置Linux的包过滤规则，常用于实现防火墙、NAT。咋一看iptables的配置很复杂，掌握规律后，其实用iptables完成指定任务...iptables命令可用于配置Linux的包过滤规则，常用于实现防火墙、NAT。...
HtmlEncode from Class Library
I have a class library (in C#). I need to encode my data using the HtmlEncode method. This is easy to do from a web application. My question is, how do I use this method from a class library that is being called from a console application?
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How to handle static content in Spring MVC?
...ping a webapp using Spring MVC 3 and have the DispatcherServlet catching all requests to '/' like so (web.xml):
23 Answer...
How do I get the last day of a month?
How can I find the last day of the month in C#?
10 Answers
10
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What is thread safe or non-thread safe in PHP?
...s implement different techniques for handling incoming HTTP requests in parallel. A pretty popular technique is using threads -- that is, the web server will create/dedicate a single thread for each incoming request. The Apache HTTP web server supports multiple models for handling requests, one of w...
Unix command-line JSON parser? [closed]
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"bar": 2,
"foo": 1
}
Note: Depending on your version of python, all keys might get sorted alphabetically, which can or can not be a good thing. With python 2 it was the default to sort the keys, while in python 3.5+ they are no longer sorted automatically, but you have the option to sort ...
Using an if statement to check if a div is empty
...If a container has a very long HTML content?
– techie_28
Jun 17 '16 at 10:07
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How do I hide a menu item in the actionbar?
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Get a MenuItem pointing to such item, call setVisible on it to adjust its visibility and then call invalidateOptionsMenu() on your activity so the ActionBar menu is adjusted accordingly.
Update: A MenuItem is not a regular view that's part of your layout. Its som...