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https://www.tsingfun.com/it/tech/1421.html 

\'telnet\' 不是内部或外部命令,也不是可运行的程序 或批处理文件 - 更多...

...的程序 或批处理文件有时在Windows上需要检测一下服务器端口是否开放等需要用到telnet命令。其实telnet不是仅仅属于Linux的命令,Windows平台上默认也有,不过...有时在Windows上需要检测一下服务器端口是否开放等需要用到telnet命令...
https://bbs.tsingfun.com/thread-1621-1-1.html 

Arduino控制RGB三色LED灯实验、程序代码、连线图、仿真 - 创客硬件开发 - ...

...对Arudino UNO板子中带有"~"的3、5、6、9、10、11数字端口写入一个模拟值,通知高电平与低电平持续时间的比值控制LED的亮度变化或者电机的转速。例如:欲使得内置的Arudino UNO 中的led亮度变为原来的一般,编写analogWrite (13,...
https://www.tsingfun.com/ilife/tech/1156.html 

“互联网卖菜”没那么简单 创业者不要盲目跟风 - 资讯 - 清泛网 - 专注C/C+...

...。可谓是从菜地到饭桌,通过自建生鲜基地去监控产品,监测农药残留。同时根据具体的菜系,杭帮菜,川菜,粤菜等推出别具特色的菜品,将菜、食材赋予了文化内涵,原产地直供的模式也可以保证菜品的原汁原味,玩到这个...
https://www.tsingfun.com/it/tech/908.html 

Web API 最佳入门指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...。Web API负责构建http常规服务,而SingalR主要负责的是构建实时服务,例如股票,聊天室,在线游戏等实时性要求比较高的服务。 为什么要用 Web API Web API最重要的是可以构建面向各种客户端的服务。另外与WCF REST Service不同在...
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What is the most accurate way to retrieve a user's correct IP address in PHP?

I know there are a plethora of $_SERVER variables headers available for IP address retrieval. I was wondering if there is a general consensus as to how to most accurately retrieve a user's real IP address (well knowing no method is perfect) using said variables? ...
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Getting visitors country from their IP

I want to get visitors country via their IP... Right now I'm using this ( http://api.hostip.info/country.php?ip= ...... ) 2...
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How do I get user IP address in django?

How do I get user's IP in django? 11 Answers 11 ...
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Pointer to pointer clarification

...an address, it returns the object at that memory address. So when you do *ipp = ip2, what you are doing is *ipp get the object at the address held in ipp which is ip1 and then assign to ip1 the value stored in ip2, which is the address of j. Simply & --> Address of * --> Value at ...
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Get the client IP address using PHP [duplicate]

I want to get the client IP address who uses my website. I am using the PHP $_SERVER superglobal: 5 Answers ...
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How to validate IP address in Python? [duplicate]

What's the best way to validate that an IP entered by the user is valid? It comes in as a string. 11 Answers ...