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Re: test '-v' - associative vs. normal array discrepancy - a bug ?

From: Greg Wooledge
Subject: Re: test '-v' - associative vs. normal array discrepancy - a bug ?
Date: Wed, 19 Nov 2014 16:48:04 -0500
User-agent: Mutt/

On Wed, Nov 19, 2014 at 10:32:52PM +0100, Piotr Grzybowski wrote:
>  I do understand your point. Dont you understand the need to check in
> a simple (I know, nothing works, nothing is simple ;-)) way that given
> variable has value? no matter what it is?

No, I don't.

If I'm writing in C, and I want to know whether one of my variables is
"empty", I have to know what type of variable it is.  The code to check
whether a string (char x[10]) is "empty" is very different from the code
to check whether an array of integers (int x[10]) is "empty".  Hell,
the meaning of "empty" would have to be defined by the application.
Would it mean every element is 0?  Or something else?  And what if x is
a float, or a double?  Or a pointer?  Or a struct?

The same thing happens in bash.  It's simply not the kind of language
where you have one syntax that works for multiple situations.

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