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Node.js Logging

...categories (make some parts of your app log as DEBUG, others only ERRORS, etc.) Example: Installation: npm install log4js Configuration (./config/log4js.json): {"appenders": [ { "type": "console", "layout": { "type": "pattern", "pattern": "%m" ...
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How to rename a single column in a data.frame?

..., in general (more than once column) nms <- c("col1.name", "col2.name", etc...) setnames(DF, nms) share | improve this answer | follow | ...
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Get Character value from KeyCode in JavaScript… then trim

... would generate (there is also a modifier for if the Shift key is pressed, etc. in the event). The character a has a unicode charcode of 61 while the character A has a charcode of 41 (according to, for example, http://www.utf8-chartable.de/). However, those are hex values, converting to decimal gi...
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Is it expensive to use try-catch blocks even if an exception is never thrown?

...o program the compiler to do them, reason about and guarantee correctness, etc. It'd be a big pain for something meant to be 'exceptional') But again, in practice you won't notice things like this. share | ...
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How can I cast int to enum?

...u know how it roughly translates to f.ex. processor operations and memory fetches / writes. If you ask how to get to that level, I'd suggest building a ton of small test cases, making them tougher as you go, try to predict the outcome every time, and test them afterwards (incl. decompilation, etc). ...
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upstream sent too big header while reading response header from upstream

...nt to add that in ubuntu 16.04 the nginx configuration file is located at /etc/nginx/nginx.conf and the values should go inside http {...} – Mario Feb 26 '18 at 17:20 ...
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国际 C 语言混乱代码大赛结果 - 创意 - 清泛网 - 专注C/C++及内核技术

国际 C 语言混乱代码大赛结果《你见过或写过最复杂 C 语言程序是?》这个帖子中指针,对部分童鞋来说够烧脑子了。觉着不过瘾朋友,继续来看看本文。第 24 届国际 C 语言混乱代码大赛结果出炉了,之前两位常在该...
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论中国股市现状 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术

论中国股市现状一天,菜市场上多了一个乞丐,有人给他点钱,但大多数人还是没给,他把给他钱住址都记了下来,结果过了几个小时,一辆宾利停他前面 一天,菜市场上多了一个乞丐,有人给他点钱,但大多数...
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美女拒绝色狼妙语 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术

美女拒绝色狼妙语对方明明不认识你,硬装一副老朋友样子。  男:真,我确定以前在哪儿见过你。  女:是啊,所以我都不去那里了。  你不希望对方坐...对方明明不认识你,硬装一副老朋友样子。   男:...
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老人炒股亏了本一怒打隔壁老王 因他穿绿衬衫 - 轻松一刻 - 清泛网 - 专注C/...

...本一怒打隔壁老王 因他穿绿衬衫家住重庆巴南区龙洲湾徐大爷年近七旬,是个老股民,退休后就用自己退休金在家炒股,同时他还是一个非常迷信人。 家住重庆巴南区龙洲湾徐大爷年近七旬,是个老股民,退休后就用...