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if/else in a list comprehension
... because if my l = [ 2, 3, 4, 5] then [x if x % 2 == 0 for x in l] give me error whereas [x if x % 2 == 0 else 200 for x in l] works. Yes I know to filter it I should write [ x for x in l if x % 2 == 0]. Sorry for botheration. Thanks for your answer.
– Grijesh Chauhan
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What is a method that can be used to increment letters?
... Glad it worked and thanks for the feedback. Maybe that initial error was there bcs the function titled same(str,char) was not pasted in there? I dunno.
– Ronnie Royston
Aug 18 '16 at 23:15
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Using LIMIT within GROUP BY to get N results per group?
...imes 5 (first 5 years). The strings are truncated rather than throwing an error, so watch for warnings such as 1054 rows in set, 789 warnings (0.31 sec).
– Timothy Johns
Mar 15 '18 at 23:35
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...，只要带宽、I/O够强，服务器计算能力够，并支持的并发连接数顶得住10万TCP链接的建立 的话，那没有问题。但在数据一致性面前，这10万就完完全全成了一个可望不可及的理论值了。
我说那么多，我只是想从业务上告诉大家...
Applicatives compose, monads don't
...statement: list <*> pure True <*> pure "hello" <*> pure (error "bad")....I get "hello" and the error never occurs. This code isn't nearly as safe or controlled as a monad, but the post seems like it's suggesting that applicatives cause strict evaluation. Overall great post though! ...
Can the Unix list command 'ls' output numerical chmod permissions?
...get the file permission information. Calculating it by hand will lead to errors!
– Evan Langlois
Nov 9 '15 at 6:28
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Find files containing a given text
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I got error grep: (error|fail): No such file or directory on Ubuntu Desktop 16; any hints?
– Nam G VU
Jul 24 '17 at 10:32
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Failed to install Python Cryptography package with PIP and setup.py
...ckage from their site and running python setup.py , I get the following error:
25 Answers
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How to split a large text file into smaller files with equal number of lines?
...s per output file
--verbose print a diagnostic to standard error just
before each output file is opened
--help display this help and exit
--version output version information and exit
You could do something like this:
split -l 200000 fi...
盘点微软历史上9大失败软件产品！ - 创意 - 清泛网 - 专注C/C++及内核技术
...务软件的目的是为信息、用户、系统、各种设备提供无缝连接的一组软件产品或服务。但不久，全世界都发觉这个定义操作起来太不现实。微软自己也一度承认其对 .NET 的定义和使用给用户带来了困惑，后来“.NET”就不在 Windows...