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https://www.tsingfun.com/ilife/tech/1096.html 

“90后”夫妻档:用创业圆梦让自己从“小草”成长为“大树” - 资讯 - 清泛...

...艰险也无法阻挡。”带着理想,李瀚等到了与他共成长的伴侣。 与现在的妻子、海归女孩安琪的相识是在一次创业培训活动中。一开始,两人只是互留了微信,李瀚帮安琪解决了几个技术问题。意外得知安琪在创业后,他也参...
https://bbs.tsingfun.com/thread-2229-1-1.html 

无法打包成apk - App应用开发 - 清泛IT社区,为创新赋能!

...写到大半的时候,可以顺利打包测试,现在使用手机上的伴侣,可以顺利测试和运行,就是无法打包 程序写道一半,大约300多k的时候可以顺利打包打包用的哪个平台?报错信息截图看一下引用: App Inventor 2  发表于 2025-03...
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Multiple left-hand assignment with JavaScript

..., you could still break up the definition from the assignment. So: var v1, v2, v3; Then later on: v1 = v2 = v3 = 6; They'll still be in local scope. Since David mentioned alerts, this would work as expected (if pre-var'd): alert(v1 = v2 = v3 = 6); – ShawnFumo S...
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What's the equivalent of use-commit-times for git?

... no longer modified (Git 2.2.2+, January 2015): "git checkout - how can I maintain timestamps when switching branches?".) The long answer was: I think you're much better off just using multiple repositories instead, if this is something common. Messing with timestamps is not going to work in gen...
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Random Gaussian Variables

... return _storedDeviate*sigma + mu; } double v1, v2, rSquared; do { // two random values between -1.0 and 1.0 v1 = 2*_random.NextDouble() - 1; v2 = 2*_random.NextDouble() - 1; rSquared = v1*v1 + v2*v2; ...
https://bbs.tsingfun.com/thread-3062-1-1.html 

App Inventor 2 串口调试 App 全方案技术调研 - App应用开发 - 清泛IT社区,为创新赋能!

...给出完整的方案对比和实现建议。 一、先说结论:AI2 其实内置了 USB 串口组件 很多人不知道,App Inventor 2 内置了一个 Serial 组件,基于开源的 Physicaloid 库实现,支持 USB OTG 直连串口设备。 源码位置:com/google/appinventor/...
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What 'additional configuration' is necessary to reference a .NET 2.0 mixed mode assembly in a .NET 4

...e: <?xml version="1.0"?><configuration> <startup useLegacyV2RuntimeActivationPolicy="true"> <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/> </startup></configuration> The key is the useLegacyV2RuntimeActivationPolicy flag. This causes t...
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AI2 SideBar Extension

...d functions can be triggered by a button. With larger apps, however, the available space quickly decreases and the layout becomes confusing. A side bar can help here. There are a number of implementations, but I haven't found a sufficiently extensive one and developed one myself. Almost all proper...
https://www.tsingfun.com/it/bigdata_ai/422.html 

MongoDB数据导出导入工具:mongoexport,mongoimport - 大数据 & AI - 清泛...

... line -k [ --slaveOk ] arg (=1) use secondaries for export if available, default true 参数说明: -h: 指明数据库宿主机的IP -u: 指明数据库的用户名 -p: 指明数据库的密码 -d: 指明数据库的名字 -c: 指明collection的名字 -f: 指明要导出那些...
https://www.tsingfun.com/it/bigdata_ai/2236.html 

从源代码剖析Mahout推荐引擎 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...= 2; final static int RECOMMENDER_NUM = 3; public static void main(String[] args) throws IOException, TasteException { String file = "datafile/item.csv"; DataModel model = new FileDataModel(new File(file)); UserSimilarity user = new EuclideanDistanceSimilarity(...