* zip arrays exclude empty elements
@ 2020-09-04 22:03 sergio
2020-09-06 0:21 ` Bart Schaefer
0 siblings, 1 reply; 2+ messages in thread
From: sergio @ 2020-09-04 22:03 UTC (permalink / raw)
To: zsh-users
I have an input string in form of 'A[-][B]' that I'd like to translate
as follows:
1: A-B -> -a A -b B
2: A- -> -a A
3: A -> -a A
4: -B -> -b B
5: empty -> empty
The solution I found:
tmp=("${(@s.-.)crop}")
echo ${tmp[1]:+-a $tmp[1]} ${tmp[2]:+-b $tmp[2]}
But possible there is clearer and simpler solution, like
o=(-a -b)
echo ${o:^tmp}
or even
echo ${(-a -b):^${(@s.-.)crop}}
--
sergio.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: zip arrays exclude empty elements
2020-09-04 22:03 zip arrays exclude empty elements sergio
@ 2020-09-06 0:21 ` Bart Schaefer
0 siblings, 0 replies; 2+ messages in thread
From: Bart Schaefer @ 2020-09-06 0:21 UTC (permalink / raw)
To: sergio; +Cc: Zsh Users
On Fri, Sep 4, 2020 at 3:03 PM sergio <sergio@outerface.net> wrote:
>
> I have an input string in form of 'A[-][B]' that I'd like to translate
I'm not sure if you consider the following to be simpler, but it
doesn't rely on exactly two letters in the split string:
setopt extendedglob
print -r -- ${=${(@s.-.)crop}/(#b)(?)/-${(L)match[1]} ${match[1]}}
Remove the "=" if you want e.g. "-a A" instead of "-a" and "A" as
separate words.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2020-09-04 22:03 zip arrays exclude empty elements sergio
2020-09-06 0:21 ` Bart Schaefer
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