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Simple explanation of clojure protocols

I'm trying to understand clojure protocols and what problem they are supposed to solve. Does anyone have a clear explanation of the whats and whys of clojure protocols? ...
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What's the point of 'meta viewport user-scalable=no' in the Google Maps API

I'm using the Google Maps JavaScript API V3 and the official examples always have you include this meta tag: 4 Answers ...
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How do I override __getattr__ in Python without breaking the default behavior?

I want to override the __getattr__ method on a class to do something fancy but I don't want to break the default behavior. ...
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MySQL ON DUPLICATE KEY UPDATE for multiple rows insert in single query

I have a SQL query where I want to insert multiple rows in single query. so I used something like: 3 Answers ...
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使用App Inventor扩展实现多点触控:Rotation Detector · App Inventor 2 中文网

创建 Apps 首页 关于我们 关于我们 发布日志 服务条款 教育 中文教程 中文社区 反馈 我要反馈 使用Ap...
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使用App Inventor扩展实现多点触控:Rotation Detector · App Inventor 2 中文网

创建 Apps 首页 关于我们 关于我们 发布日志 服务条款 教育 中文教程 中文社区 反馈 我要反馈 使用Ap...
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使用App Inventor扩展实现多点触控:Rotation Detector · App Inventor 2 中文网

创建 Apps 首页 关于我们 关于我们 发布日志 服务条款 教育 中文教程 中文社区 反馈 我要反馈 使用Ap...
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使用App Inventor扩展实现多点触控:Rotation Detector · App Inventor 2 中文网

创建 Apps 首页 关于我们 关于我们 发布日志 服务条款 教育 中文教程 中文社区 反馈 我要反馈 使用Ap...
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Python loop that also accesses previous and next values

How can I iterate over a list of objects, accessing the previous, current, and next items? Like this C/C++ code, in Python? ...
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Representing null in JSON

What is the preferred method for returning null values in JSON? Is there a different preference for primitives? 7 Answers ...