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In Python, what is the difference between “.append()” and “+= []”?
...ormance: append is twice as fast.
Python 3.0 (r30:67507, Dec 3 2008, 20:14:27) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import timeit
>>> timeit.Timer('s.append("something")', 's = []').timeit()
0.201774244999...
AsyncTask and error handling on Android
...s anymore
– Bostone
Nov 16 '09 at 5:47
5
Is this the way I should hold onto the Throwable or Exce...
How to automatically generate N “distinct” colors?
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14 Answers
14
Active
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How to keep environment variables when using sudo
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491
First you need to export HTTP_PROXY. Second, you need to read man sudo carefully, and pay atte...
互联网造车运动 - 资讯 - 清泛网 - 专注C/C++及内核技术
...年1月，乐视公布了造车的See计划。乐视超级汽车高层在4月上海车展期间释放出信息，乐视超级汽车有望出现在2016年4月的北京车展上。目前，乐视对打造汽车生态链表现出势在必行。10月20日，乐视正式宣布，乐视汽车获得易到...
Disable cache for some images
...lt;img src="image.png" />
Would become
<img src="image.png?dummy=8484744" />
Or
<img src="image.png?dummy=371662" />
From the point of view of the web-server the same file is accessed, but from the point of view of the browser no caching can be performed.
The random number ge...
What is Node.js' Connect, Express and “middleware”?
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[Update: As of its 4.0 release, Express no longer uses Connect. However, Express is still compatible with middleware written for Connect. My original answer is below.]
I'm glad you asked about this, because it's definitely a common point of co...
Amazon S3 direct file upload from client browser - private key disclosure
...gt;<br />
<input type="hidden" name="x-amz-meta-uuid" value="14365123651274" />
Tags for File: <input type="input" name="x-amz-meta-tag" value="" /><br />
<input type="hidden" name="AWSAccessKeyId" value="AKIAIOSFODNN7EXAMPLE" />
<input type="hidden" ...
Is it possible to create a multi-line string variable in a Makefile
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edited Jul 26 '12 at 2:34
answered Mar 16 '09 at 6:39
Eri...