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Re: What is correct syntax to check for empty array? behavior diffs betw
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From: |
Greg Wooledge |
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Subject: |
Re: What is correct syntax to check for empty array? behavior diffs between 4.3 and 4.4 |
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Date: |
Thu, 26 Jan 2017 16:15:23 -0500 |
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User-agent: |
Mutt/1.4.2.3i |
On Thu, Jan 26, 2017 at 01:11:25PM -0800, L A Walsh wrote:
>> Subject: Re: What is correct syntax to check for empty array?
The number of elements is 0 if the array is empty. So you would test
whether ${#array[@]} is 0.
> > set -u # now add an undefined check
Now you've changed the question. You're no longer asking whether an
array is empty. You're asking whether some legacy crap from 197x will
make your shell script abort.
Answer: who the hell cares. Stop doing it.