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Move an array element from one array position to another
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31 Answers
31
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In Ruby, is there an Array method that combines 'select' and 'map'?
... as a postfix if. compact gets rid of the nils.
jruby-1.5.0 > [1,1,1,2,3,4].map{|n| n*3 if n==1}
=> [3, 3, 3, nil, nil, nil]
jruby-1.5.0 > [1,1,1,2,3,4].map{|n| n*3 if n==1}.compact
=> [3, 3, 3]
share...
Is it possible to install another version of Python to Virtualenv?
...rce/v/virtualenv/virtualenv-1.5.2.tar.gz#md5=fbcefbd8520bb64bc24a560c6019a73c
tar -zxvf virtualenv-1.5.2.tar.gz
cd virtualenv-1.5.2/
~/.localpython/bin/python setup.py install
3) Create a virtualenv using your local python
virtualenv docs
mkdir /home/${USER}/virtualenvs
cd /home/${USER}/virtualen...
How to split a delimited string in Ruby and convert it to an array?
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>> "1,2,3,4".split(",")
=> ["1", "2", "3", "4"]
Or for integers:
>> "1,2,3,4".split(",").map { |s| s.to_i }
=> [1, 2, 3, 4]
Or for later versions of ruby (>= 1.9 - as pointed out by Alex):
>> "1,2,3,4".spli...
App Inventor 2 矩阵块 · App Inventor 2 中文网
...按行、列排好的数值表格。 下面的成绩单就是一个 2 行 3 列的矩阵（记作 2×3）：
语文
数学
英语
小明
90
85
88
小红
92
95
90
先数行、再...
Deleting an element from an array in PHP
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38 Answers
38
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How to remove the first Item from a list?
I have the list [0, 1, 2, 3, 4] I'd like to make it into [1, 2, 3, 4] . How do I go about this?
10 Answers
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range over interface{} which stores a slice
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3 Answers
3
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How to create the most compact mapping n → isprime(n) up to a limit N?
...number with one bit e.g. for the given range of numbers (1, 10], starts at 3: 1110
31 Answers
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在vc中使用xtremetoolkit界面库-----安装及环境配置 - C/C++ - 清泛网 - 专...
...当然是配置发开环境了：
我使用的是vc6.0+xtremetoolkitPro15.3.1
以下链接是xtremetoolkitPro15.3.1免费下载地址：（其中还包含了注册机，解压Crack文件下的Keygen.zip就可以得到），
http://pan.baidu.com/s/1pJvfy0F
我因为之前安装的是一个绿色...
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