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Worth switching to zsh for casual use? [closed]
The default shell in Mac OS X is bash , which I'm generally happy to be using. I just take it for granted. It would be really nice if it auto-completed more stuff , though, and I've heard good things about zsh in this regard. But I don't really have the inclination to spend hours fiddling with s...
Removing duplicate rows in vi?
...at contains a long list of entries (one on each line). Some of these are duplicates, and I would like to know if it is possible (and if so, how) to remove any duplicates. I am interested in doing this from within vi/vim, if possible.
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What does the 'b' character do in front of a string literal?
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To quote the Python 2.x documentation:
A prefix of 'b' or 'B' is ignored in
Python 2; it indicates that the
literal should become a bytes literal
in Python 3 (e.g. when code is
automatically converted with 2to3). A
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How do I sort unicode strings alphabetically in Python?
Python sorts by byte value by default, which means é comes after z and other equally funny things. What is the best way to sort alphabetically in Python?
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TLSF源码及算法介绍 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...及算法介绍tlsf-two-level-segregated-fit官网地址：http: www gii upv es tlsf 官网的代码应该是主分支，github上的几个仓库更新不是那么及时。英文好的同学请直接看论文《TLSF: a New Dynamic Memory Allocator f 官网地址：http://www.gii.upv.es/tlsf/
官...
What are advantages of Artificial Neural Networks over Support Vector Machines? [closed]
ANN (Artificial Neural Networks) and SVM (Support Vector Machines) are two popular strategies for supervised machine learning and classification. It's not often clear which method is better for a particular project, and I'm certain the answer is always "it depends." Often, a combination of both alon...
How to convert a string to lower case in Bash?
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The are various ways:
POSIX standard
tr
$ echo "$a" | tr '[:upper:]' '[:lower:]'
hi all
AWK
$ echo "$a" | awk '{print tolower($0)}'
hi all
Non-POSIX
You may run into portability issues with the following examples:
Bash 4.0
$ ec...
Check if table exists and if it doesn't exist, create it in SQL Server 2008
I am writing a Stored procedure in SQL Server 2008.
I need to check if a table exists in the database. If it doesn't then I need to create it.
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Writing Unicode text to a text file?
I'm pulling data out of a Google doc, processing it, and writing it to a file (that eventually I will paste into a Wordpress page).
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Generate random numbers following a normal distribution in C/C++
How can I easily generate random numbers following a normal distribution in C or C++?
18 Answers
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