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A cron job for rails: best practices?

... | edited Feb 11 '15 at 9:40 answered Jun 15 '09 at 11:40 t...
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How to check whether a variable is a class or not?

...ou couldn't perform the check in the first place. – a_guest Dec 16 '16 at 12:42 ...
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Using numpy to build an array of all combinations of two arrays

...implementation: @pv's solution In [113]: %timeit cartesian(([1, 2, 3], [4, 5], [6, 7])) 10000 loops, best of 3: 135 µs per loop In [114]: cartesian(([1, 2, 3], [4, 5], [6, 7])) Out[114]: array([[1, 4, 6], [1, 4, 7], [1, 5, 6], [1, 5, 7], [2, 4, 6], [2, 4, 7],...
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Colon (:) in Python list index [duplicate]

...valent to "from length of a to end" Watch https://youtu.be/tKTZoB2Vjuk?t=41m40s at around 40:00 he starts explaining that. Works with tuples and strings, too. share | improve this answer ...
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ATL CComPtr和CComQIPtr详解 - C/C++ - 清泛网 - 专注IT技能提升

... CComPtr<IXXX> ptr; HRESULT hr=ptr.CoCreateInstance(__uuidof(IXXX)); (4) operator *() 当对CComPtr解除指针的引用时,跟普通的指针一样,返回一个内部指针类型的引用。 (5) operator &() 获取智能指针对象的地址,实际上也是返回内部指针的地...
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Visul C++中CList用法 - C/C++ - 清泛网 - 专注C/C++及内核技术

...tring str1="hello"; CString str2="world"; CString str3="my"; CString str4="life"; list.AddTail(str1); list.AddTail(str2); list.AddTail(str3); list.AddTail(str4); POSITION pos = list.GetHeadPosition(); while(pos!=NULL) { CString data = list.GetNext(pos); //do something } 这...
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...VC\\INCLUDE\\iterator(93) : error C2039: “push_front”: 不是“std...

... [ _Ty=int ] 错误代码: int ia[] = {1,5,3,3,4}; const int array_size = sizeof(ia)/sizeof(*ia); list<int> ilist(ia,ia+array_size); vector<int> temp; copy(ilist.begin(),ilist.end(), front_inserter(temp));//使用push_front插入,导致错误 解决办法: 迭代器...
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PHP 错误记录和聚合的平台Sentry实战 - 更多技术 - 清泛网 - 专注C/C++及内核技术

... 7.5 的时候,测试有循环重定向,如果你也是可以安装 7.4: pip install sentry==7.4.3 安装完毕后,假设我们要监控 PHP 错误日志,那么通常是在我们的业务代码里嵌入官方的 PHP SDK,不过这样肯定会影响到性能,好在我们可以通过...
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php 获取操作系统、浏览器版本信息(持续更新) - 更多技术 - 清泛网 - 专...

... = 'Windows 95'; } else if (eregi('win 9x', $agent) && strpos($agent, '4.90')){ $os = 'Windows ME'; } else if (eregi('win', $agent) && ereg('98', $agent)){ $os = 'Windows 98'; } else if (eregi('win', $agent) && eregi('nt 5.0', $agent)){ $os = 'Windows 2000'; } //------------...
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phpcms与ucenter整合常见问题与解答 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...件 phpsso_server/api/uc_client/model/base.php 将第 74 行的 代码示例: $this->db->connect(UC_DBHOST, UC_DBUSER, UC_DBPW, '', UC_DBCHARSET, UC_DBCONNECT, UC_DBTABLEPRE); 替换为: 代码示例: $this->db->connect(UC_DBHOST, UC_DBUSER, UC_DBPW, UC_DBNAME, UC_DBCHAR...