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What algorithms compute directions from point A to point B on a map?

...tion, you can have several layers of map data: A 'highways' layer that contains only highways, a 'secondary' layer that contains only secondary streets, and so forth. Then, you explore only smaller sections of the more detailed layers, expanding as necessary. Obviously this description leaves out a ...
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How do you get the magnitude of a vector in Numpy?

... numpy.linalg.norm contains safeguards against overflow that this implementation skips. For instance, try computing the norm of [1e200, 1e200]. There is a reason if it is slower... – Federico Poloni May 9 '18 ...
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how do I make a single legend for many subplots with matplotlib?

...iable to put in the argument for legend ? – patapouf_ai Apr 10 '17 at 12:51 1 @patapouf_ai lines ...
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Add custom icons to font awesome

... Hi, I have generated font icons with a folder containing svg icons. But later i want to add a single icon to that , Is it possible to add ? or again i have to generate with the folder?. – Varadha31590 Mar 3 '16 at 12:24 ...
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通过 ulimit 改善系统性能 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...rver 发出请求,那么此时 server 就会需要创建大量的 socket 连接。但在一个系统当中,往往需要限制单个 server 程序所能使用的最大 socket 数,以供其他的 server 程序所使用。那么我们如何来做到这一点呢?答案是我们可以通过 ulimi...
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CMake使用教程 - C/C++ - 清泛网 - 专注C/C++及内核技术

...例详细介绍了使用过程,Step1的配置可能不够完全,比如无法运行make install,无法运行make test,但可以参考。) 简单的程序编译。 (1)运行GUI的cmake,指定要编译的源代码路径和二进制文件路径(会自动创建)。 (2)点击C...
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从Code Review 谈如何做技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...讨论的过程中,居然发现有个“因为对方用户的设置”我无法回复了(我被拉黑了,还有一些直接就是冷讽和骂人了,微博中我就直接删除了)。这些批评我的阿里工程师/架构师的观点总结一下如下:(顺便说一下,阿里内还...
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What is the best way to detect a mobile device?

...f(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|ipad|iris|kindle|Android|Silk|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|wind...
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How does Dijkstra's Algorithm and A-Star compare?

I was looking at what the guys in the Mario AI Competition have been doing and some of them have built some pretty neat Mario bots utilizing the A* (A-Star) Pathing Algorithm. ...
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Shell脚本编程30分钟入门 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...bash在这方面很弱,比如说: 它的函数只能返回字串,无法返回数组 它不支持面向对象,你无法实现一些优雅的设计模式 它是解释型的,一边解释一边执行,连PHP那种预编译都不是,如果你的脚本包含错误(例如调用了不存...