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MQTT与TCP的区别 - 创客硬件开发 - 清泛IT社区，为创新赋能！
...以通过自定义应用消息实现客户端对服务端的身份验证。11. 有商业和开源的mqtt broker供选择。支持ACL访问控制、集群、共享订阅、重要指标dashboard、sysadmin api、插件扩展、对topic或session或clientid的tracing调试等高级功能，大大简化...
Remove querystring from URL
...16ms
10k split: 25ms
10k regex: 44ms
Results in Chrome 5.0.307.11 on Mac OS X 10.6.2:
10k substring: 14ms
10k split: 20ms
10k regex: 15ms
Note that the substring method is inferior in functionality as it returns a blank string if the URL does not contain a querystring. The ...
What is middleware exactly?
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SAK123SAK123
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Sum a list of numbers in Python
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Sum list of numbers:
sum(list_of_nums)
Calculating half of n and n - 1 (if I have the patte...
Is it possible to get all arguments of a function as single object inside that function?
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answered Jan 8 '11 at 8:40
Thomas EdingThomas Eding
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Unable to create/open lock file: /data/mongod.lock errno:13 Permission denied
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I was having the same problem on a Ubuntu ec2 instance. I was following this amazon article on...
How do you round a float to two decimal places in jruby
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Community♦
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answered May 5 '12 at 16:06
steenslagsteenslag
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京东618：算法让UV价值提升200%+，用智能卖场缩短购物路径 - 更多技术 - 清...
...目前已经很好地支持了实时推荐，并且经历过多次618和双11的考验。例如PC首页的猜你喜欢、APP首页的为你推荐等模块，都应用了实时推荐技术。对于实时推荐我们认为有两个比较典型的应用场景，一个是像猜你喜欢/为你推荐这...
How do you convert a time.struct_time object into a datetime object?
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Rod HydeRod Hyde
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returning in the middle of a using block
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JaredParJaredPar
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