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Return multiple values in JavaScript?
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No, but you could return an array containing your values:
function getValues() {
return [...
Difference between map, applymap and apply methods in Pandas
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Straight from Wes McKinney's Python for Data Analysis book, pg. 132 (I highly recommended this book):
Another frequent operation is applying a function on 1D arrays to each column or row. DataFrame’s apply method does exactly this:
In [116]: frame = DataFrame(np.random.randn(4, 3),...
Javascript and regex: split string and keep the separator
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JonJon
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How to change the order of DataFrame columns?
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34 Answers
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Paste multiple columns together
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# your starting data..
data <- data.frame('a' = 1:3, 'b' = c('a','b','c'), 'c' = c('d', 'e', 'f'), 'd' = c('g', 'h', 'i'))
# columns to paste together
cols <- c( 'b' , 'c' , 'd' )
# create a new column `x` with the three columns collapsed together
data$x <- apply( d...
ros 基本调试 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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2.1.1.1虚拟机
2.1.1.2真实电脑——物理串行线
2.1.1.3基于freebsd的串行终端
2.1.2将调试文字输出到文件
2.1.3将调试文字输出到屏幕
2.1.4修改波特率（数据传输速率）
2.2KDBG
2.3GDB
2.4WINDBG
3.生成更多输出
3.1编译时开启verbosi...
Search for string and get count in vi editor
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edited Jun 3 '15 at 9:51
Martin Tournoij
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How do I choose grid and block dimensions for CUDA kernels?
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3 Answers
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What is the bower (and npm) version syntax?
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In a nutshell, the syntax for Bower version numbers (and NPM's) is called SemVer, which is sho...