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remove None value from a list without removing the 0 value

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How to use Morgan logger?

...ilt to do logging in the way that servers like Apache and Nginx log to the error_log or access_log. For reference, this is how you use morgan: var express = require('express'), app = express(), morgan = require('morgan'); // Require morgan before use // You can set morgan ...
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How can I remove specific rules from iptables?

...| edited Oct 17 '18 at 17:05 T.Todua 41.4k1515 gold badges181181 silver badges170170 bronze badges answe...
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How can I get around MySQL Errcode 13 with SELECT INTO OUTFILE?

... $ mkdir bkptest tmp $ mysqldump -u root -T bkptest bkptest mysqldump: Got error: 1: Can't create/write to file '/Users/username/tmp/bkptest/people.txt' (Errcode: 13) when executing 'SELECT INTO OUTFILE' tmp $ chmod a+rwx bkptest/ tmp $ mysqldump -u root -T bkptest bkptest tmp $ ls bkptest/ people.s...
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Cleanest way to write retry logic?

... +1, especially for the warning and error-checking. I'd be more comfortable if this passed in the type of the exception to catch as a generic parameter (where T: Exception), though. – TrueWill Oct 13 '09 at 22:55 ...
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How to check if an object is an array?

...o an array with just the one item so I can loop over it without fear of an error. 49 Answers ...
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What do ellipsis […] mean in a list?

...'t been able to understand this. Tried to run these commands but there are errors. – Aseem Bansal Jun 19 '13 at 5:17 @...
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内存调试技巧:C 语言最大难点揭秘 - C/C++ - 清泛网 - 专注C/C++及内核技术

...能是内存泄漏。其他资源(如信号量、网络句柄、数据库连接等)同样值得考虑。 内存错误分配 错误分配的管理不是很困难。下面是一个示例(请参见清单 3): 清单 3. 未初始化的指针 void f2(int datum) { int *p2; ...
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Portable way to get file size (in bytes) in shell?

... Palec 9,69777 gold badges5050 silver badges109109 bronze badges answered Nov 29 '09 at 13:45 Carl SmotriczCarl Smotricz ...
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How to add a custom loglevel to Python's logging facility

... @Eric S. Why do you need args without *? If I do that, I get TypeError: not all arguments converted during string formatting but it works fine with *. (Python 3.4.3). Is it a python version issue, or something I'm missing? – Peter Apr 16 '17 at 20:10 ...