string 像在 Python 中一样使用 zsh 拆分字符串
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/2930238/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Split string with zsh as in Python
提问by Olivier Verdier
In python:
在蟒蛇中：
s = '1::3'
a = s.split(':')
print a[0] # '1' good
print a[1] # '' good
print a[2] # '3' good
How can I achieve the same effect with zsh?
我怎样才能达到同样的效果zsh？
The following attempt fails:
以下尝试失败：
string="1::3"
a=(${(s/:/)string})
echo $a[1] # 1
echo $a[2] # 3 ?? I want an empty string, as in Python
回答by Olivier Verdier
The solution is to use the @modifier, as indicated in the zsh docs:
解决方案是使用@修饰符，如zsh 文档中所示：
string="1::3"
a=("${(@s/:/)string}") # @ modifier
By the way, if one has the choice of the delimiter, it's much easier and less error prone to use a newline as a delimiter. The right way to split the lines with zsh is then:
顺便说一句，如果可以选择分隔符，那么使用换行符作为分隔符会更容易且更不容易出错。使用 zsh 拆分行的正确方法是：
a=("${(f)string}")
I don't know whether or not the quotes are necessary here as well...
我不知道这里是否也需要引号......
回答by Paused until further notice.
This will work in both zsh (with setopt shwordsplitor zsh -y) and Bash (zero-based arrays):
这将适用于 zsh（带setopt shwordsplit或zsh -y）和 Bash（从零开始的数组）：
s="1::3"
saveIFS="$IFS"
IFS=':'
a=(${s})
IFS="$saveIFS"
