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程序员之网络安全系列(五):数字证书以及12306的证书问题 - 更多技术 - ...

...的证书都内置在操作系统里的。 另外,我们自己也可以制作自签名的证书,但是需要别人认可你,这个在企业内部或者开发阶段是可以,我们可以自己制作一个证书添加到操作系统里。 那么,问题来了,当你访问https://www.12306...
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常用快速产品原型设计工具推荐 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...包括商业过程、活动、用户界面、需求和数据,不但可以制作界面原型,方便用户在代码编写之前直观预览到网站的运行流程,同时还可以用来做项目管理,包括需求管理,数据管理。 Prototype Composer提供了完整的集成环境,...
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iOS开发过程中的各种tips - 更多技术 - 清泛网 - 专注C/C++及内核技术

....volume = 1; musicPlayer.numberOfLoops = -1;//-1表示一直循环 22.从通讯录中读取电话号码,去掉数字之间的- NSString *originalString = @"(123)123123abc"; NSMutableString *strippedString = [NSMutableString stringWithCapacity:originalString.length]; NSScanner *scanner = [NS...
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十年磨一“饼” 一个70后连续创业者的心路历程 - 资讯 - 清泛网 - 专注C/C+...

...饼是果腹的产品,怎么就扯在一起了呢?首先我们可以从制作工序的角度来剖析,星巴克咖啡有着不到50秒钟的手工制作时间(长期效率优化提升后的结果),而我们的卷饼也有将近1分钟的手工包制工序。单个产品现做的方式,保...
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How to concatenate a std::string and an int?

... If you're on Arduino, you can also use String(number). – Machado Apr 19 at 8:04 add a comment  ...
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Is there a portable way to print a message from the C preprocessor?

... Works with Arduino 1.8 using Visual Studio vMicro. Thanks! – save_jeff Mar 29 at 7:35 add a comment ...
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社交应用组件 · App Inventor 2 中文网

...文档(保存文本到文档)、地图(文本作为搜索地址)、蓝牙(传输文本数据)之类的App,没有打印机相关的,打印机App在分享文件的方式才弹出。 分享文件、分享文件及消息 弹出其他App的界面:分享文件的方式弹出的App...
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How can I tell gcc not to inline a function?

... Arduino also wanted it placed before the function. – Peter N Lewis Feb 24 '12 at 9:49 2 ...
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How do I get the type of a variable?

... TypeId: I was not able to use typeid() on Arduino. Also typeid() is a runtime check, not compile time so it cannot be used to generate optimized code. – Dan Truong Jun 10 '16 at 1:21 ...
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CSV file written with Python has blank lines between each row

..., as I've initially got the same problem. I was supposed to get data from arduino using PySerial, and write them in a .csv file. Each reading in my case ended with '\r\n', so newline was always separating each line. In my case, newline='' option didn't work. Because it showed some error like : wi...