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Escape regex special characters in a Python string
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I'm surprised no one has mentioned using regular expressions via re.sub():
import re
print re.sub(r'([\"])', r'\\\1', 'it\'s "this"') # it's \"this\"
print re.sub(r"([\'])", r'\\\1', 'it\'s "this"') # it\'s "this"
print re.sub(r'([\"...
Changing selection in a select with the Chosen plugin
... You don't event need to trigger any events. Perhaps, it is of use for someone else too... :)
– Timo
Mar 26 '14 at 11:04
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What is the __DynamicallyInvokable attribute for?
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It is undocumented, but it looks like one of the optimizations in .NET 4.5. It appears to be used to prime the reflection type info cache, making subsequent reflection code on common framework types run faster. There's a comment about it in the Reference Source...
CommandError: You must set settings.ALLOWED_HOSTS if DEBUG is False
...e. Very unsure why.
EDIT: This is due to a Django security update as mentioned in my comment.
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Does the 'mutable' keyword have any purpose other than allowing the variable to be modified by a con
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Why does one need mutable on lambdas? Wouldn't it suffice to capture variable by reference?
– Giorgio
Apr 24 '13 at 11:02
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Clojure: cons (seq) vs. conj (list)
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One difference is that conj accepts any number of arguments to insert into a collection, while cons takes just one:
(conj '(1 2 3) 4 5 6)
; => (6 5 4 1 2 3)
(cons 4 5 6 '(1 2 3))
; => IllegalArgumentException due to w...
程序员之网络安全系列（六）：动态密码 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...要让他在一定时间有效就可以了，这就是OTP.
动态口令 (One Time Password)
动态密码： 一个OTP(One Time Password) 是一个密码仅用于一次登录会话或者交易，使用过后，这个密码就无效了。
静态密码的问题：
容易被破解
容易被猜测...
Transpose/Unzip Function (inverse of zip)?
...is does not 'scale better' than the zip(*x) version. zip(*x) only requires one pass through the loop, and does not use up stack elements.
– habnabit
Nov 17 '13 at 16:38
1
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How to make child process die after parent exits?
Suppose I have a process which spawns exactly one child process. Now when the parent process exits for whatever reason (normally or abnormally, by kill, ^C, assert failure or anything else) I want the child process to die. How to do that correctly?
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Getting DOM elements by classname
...nder->query("//*[contains(@class, '$classname')]");
If it is only ever one type of element you can replace the * with the particular tagname.
If you need to do a lot of this with very complex selector I would recommend Zend_Dom_Query which supports CSS selector syntax (a la jQuery):
$finder = ne...