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Drop unused factor levels in a subsetted data frame

... 14 Answers 14 Active ...
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Best way to turn an integer into a month name in c#?

... You can do it by: CultureInfo.CurrentCulture.DateTimeFormat.GetMonthName(1); share | improve this answer | follow | ...
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Python Request Post with param data

...rs as well: params = {'sessionKey': '9ebbd0b25760557393a43064a92bae539d962103', 'format': 'xml', 'platformId': 1} then post your data with: import requests url = 'http://192.168.3.45:8080/api/v2/event/log' data = {"eventType": "AAS_PORTAL_START", "data": {"uid": "hfe3hf45huf33545", "aid": "1",...
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Parse string to date with moment.js

I want to parse the following string with moment.js 2014-02-27T10:00:00 and output day month year (14 march 2014) I have been reading the docs but without success http://momentjs.com/docs/#/parsing/now/ ...
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Why should I use var instead of a type? [duplicate]

... 110 It's really just a coding style. The compiler generates the exact same for both variants. See...
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Convert python datetime to epoch with strftime

... 415 If you want to convert a python datetime to seconds since epoch you could do it explicitly: &g...
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Redis消息通知系统的实现 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...xtends Redis { const POSITION_FIRST = 0; const POSITION_LAST = -1; public function zPop($zset) { return $this->zsetPop($zset, self::POSITION_FIRST); } public function zRevPop($zset) { return $this->zsetPop($zset, self::POSITION_LAST); } ...
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Using git to get just the latest revision

... Use git clone with the --depth option set to 1 to create a shallow clone with a history truncated to the latest commit. For example: git clone --depth 1 https://github.com/user/repo.git To also initialize and update any nested submodules, also pass --recurse-submodules...
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On Duplicate Key Update same as insert

... Alternatively, you can use: INSERT INTO table (id,a,b,c,d,e,f,g) VALUES (1,2,3,4,5,6,7,8) ON DUPLICATE KEY UPDATE a=a, b=b, c=c, d=d, e=e, f=f, g=g; To get the id from LAST_INSERT_ID; you need to specify the backend app you're using for the same. For LuaSQL, a conn:getlastautoid() fetches ...
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Capistrano - clean up old releases

...t's intended purpose? Is there another way to cleanup old releases to just 1 previous deploy? 4 Answers ...