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Caveats of select/poll vs. epoll reactors in Twisted
...ePoll is a natural replacement for Select and Poll based networking, especially with Twisted. Which makes me paranoid, its pretty rare for a better technique or methodology not to come with a price.
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使用Activity启动器组件 · App Inventor 2 中文网
...件比使用 ActivityStarter 更方便。
启动网络搜索
要启动 Web 搜索，请使用带有 WEB_SEARCH 操作的 ActivityStarter。 用户的手机将显示一个菜单，询问要执行哪种搜索：
Action：android.intent.action.WEB_SEARCH
打开浏览器到指定网页：将这些 ...
differences in application/json and application/x-www-form-urlencoded
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The first case is telling the web server that you are posting JSON data as in:
{ Name : 'John Smith', Age: 23}
The second option is telling the web server that you will be encoding the parameters in the URL as in:
Name=John+Smith&Age=23
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OOP vs Functional Programming vs Procedural [closed]
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All of them are good in their own ways - They're simply different approaches to the same problems.
In a purely procedural style, data tends to be highly decoupled from the functions that operate on it.
In an object oriented...
HTTP Basic Authentication credentials passed in URL and encryption
...pleteness, "Internet Explorer does not support user names and passwords in Web site addresses (HTTP or HTTPS URLs)" Looks like only Internet Explorer versions 3.0 to 6.0 support the following syntax for HTTP or HTTPS URLs: http(s)://username:password@server/resource.ext Note: This change in the ...
What requirement was the tuple designed to solve?
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When writing programs it is extremely common to want to logically group together a set of values which do not have sufficient commonality to justify making a class.
Many programming languages allow you to logically group together a set of otherwise unrelated values without creating ...
How do I get a background location update every n minutes in my iOS application?
...d with UIApplication:beginBackgroundTaskWithExpirationHandler:
When n is smaller than UIApplication:backgroundTimeRemaining it will work just fine. When n is larger, the location manager should be enabled (and disabled) again before there is no time remaining to avoid the background task being kille...
Convert JSON String to JSON Object c#
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namespace for 'JavaScriptSerializer': System.Web.Script.Serialization;
– BernieSF
Mar 19 '18 at 18:57
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Proper use of 'yield return'
...must have the complete list before returning.
By using yield-return, you really only need to have the next item before returning.
Among other things, this helps spread the computational cost of complex calculations over a larger time-frame. For example, if the list is hooked up to a GUI and the us...
How to get users to read error messages?
... how hard you try, do not use colours to identify the message...psychologically, it's akin to waving a red-flag to the bull!
Use neutral sounding words to convey minimal reaction and how to proceed!
It may be better to show a dialog box listing the neutral error message and to include a checkbox ind...