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How to slice an array in Bash
...n section in the Bash man page. A[@] returns the contents of the array, :1:2 takes a slice of length 2, starting at index 1.
A=( foo bar "a b c" 42 )
B=("${A[@]:1:2}")
C=("${A[@]:1}") # slice to the end of the array
echo "${B[@]}" # bar a b c
echo "${B[1]}" # a b c
echo "${C...
Calculate distance between 2 GPS coordinates
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29 Answers
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Linux反编译全攻略 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...这来下载:
http://www.crackmes.de/users/veneta/crackmes/linux_crackme_v2 。古人云“工欲善其事，必先利其器”，本文中所用到的工具及操作平台罗列如下:
操作平台: gentoo 2004.3 # kernel 2.6.9
逆向工具:
反汇编 -- objdump （这个工具基本...
How do I convert an integer to binary in JavaScript?
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function dec2bin(dec){
return (dec >>> 0).toString(2);
}
dec2bin(1); // 1
dec2...
Generate all permutations of a list without adjacent equal elements
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Find indices of elements equal to zero in a NumPy array
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numpy.where() is my favorite.
>>> x = numpy.array([1,0,2,0,3,0,4,5,6,7,8])
>>&...
Converting bytes to megabytes
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Traditionally by megabyte we mean your second option -- 1 megabyte = 220 bytes. But it is not correct actually because mega means 1 000 000. There is a new standard name for 220 bytes, it is mebibyte (http://en.wikipedia.org/wiki/Mebibyte) and it gathers popularity.
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What is the Ruby (spaceship) operator?
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TonyArraTonyArra
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How can I pipe stderr, and not stdout?
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First redirect stderr to stdout — the pipe; then redirect stdout to /dev/null (without chang...
What is the best way to convert an array to a hash in Ruby
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NOTE: For a concise and efficient solution, please see Marc-André Lafortune's answer below.
Th...