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程序员才能听得懂的笑话 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...灯泡需要几个程序员？一个也不要，这是硬件问题。
3、换一个电灯泡需要几个微软程序员？一个也不要，他们会把黑暗变成标准然后告诉每个人：“我们就是这么设计的。”
4、换一个电灯泡需要几个C++程序员？你还在用...
What is the difference between the GNU Makefile variable assignments =, ?=, := and +=?
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edited May 27 at 20:31
answered Jan 15 '09 at 23:25
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Sort array of objects by single key with date value
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358
You can use Array.sort.
Here's an example:
var arr = [{
"updated_at": "2012-01-01T06...
CentOS 6.4下Squid代理服务器的安装与配置 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...发送数据请求；
2. 代理服务器检查自己的数据缓存；
3. 代理服务器在缓存中没有找到用户想要的数据；
4. 代理服务器向Internet 上的远端服务器发送数据请求；
5. 远端服务器响应，返回相应的数据；
6. 代理服务器取得远端...
Multiplication on command line terminal
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KurzedMetalKurzedMetal
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How to activate an Anaconda environment
...nd Scripts\ on Windows).
Imagine you have created an environment called py33 by using:
conda create -n py33 python=3.3 anaconda
Here the folders are created by default in Anaconda\envs, so you need to set the PATH as:
set PATH=C:\Anaconda\envs\py33\Scripts;C:\Anaconda\envs\py33;%PATH%
Now it ...
How to copy a directory structure but only include certain files (using windows batch files)
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edited May 22 '13 at 18:04
answered Jan 23 '09 at 12:25
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Drop unused factor levels in a subsetted data frame
...columns in a dataframe, you can use:
subdf <- subset(df, numbers <= 3)
subdf[] <- lapply(subdf, function(x) if(is.factor(x)) factor(x) else x)
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How to assign from a function which returns more than one value?
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What is the difference between instanceof and Class.isAssignableFrom(…)?
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answered Jan 30 '09 at 19:58
Marc NovakowskiMarc Novakowski
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