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* Re: Problem with associative arrays
@ 1998-12-15  8:12 Sven Wischnowsky
  0 siblings, 0 replies; 4+ messages in thread
From: Sven Wischnowsky @ 1998-12-15  8:12 UTC (permalink / raw)
  To: zsh-workers


Bart Schaefer wrote:

> ...
> 
> You have to use `typeset -A a` to get an associative array.  `set -A a`
> creates an ordinary array.  I realize this is confusing, which is why I
> originally used a different option letter for typeset, but compatibility
> with ksh requires -A.

Oops. Sorry.

Bye
 Sven


--
Sven Wischnowsky                         wischnow@informatik.hu-berlin.de


^ permalink raw reply	[flat|nested] 4+ messages in thread
* Problem with associative arrays
@ 1998-12-16 14:31 Sven Wischnowsky
  0 siblings, 0 replies; 4+ messages in thread
From: Sven Wischnowsky @ 1998-12-16 14:31 UTC (permalink / raw)
  To: zsh-workers


And this time it's for real:

  % typeset -A a
  % a[x*]=foo
  zsh: bad math expression: unbalanced stack
  % echo $a[x*]
  foo
  %

The problem is that isident() uses mathevalarg() to skip (!) over the
contents of a subscript (unless the subscript contains flags).

I don't have the time to fix this now since our LAN will soon be
upgraded but if noone else gives it a try I'll have a lokk at it.

Bye
 Sven


--
Sven Wischnowsky                         wischnow@informatik.hu-berlin.de


^ permalink raw reply	[flat|nested] 4+ messages in thread
* Problem with associative arrays
@ 1998-12-14 10:55 Sven Wischnowsky
  1998-12-14 15:47 ` Bart Schaefer
  0 siblings, 1 reply; 4+ messages in thread
From: Sven Wischnowsky @ 1998-12-14 10:55 UTC (permalink / raw)
  To: zsh-workers


Hello

Subscripts for associative arrays are matheval()ed which makes some
problems:

% set -A a
% a[foo]=bar
% echo $a[baz]
bar

There is no variable baz, so evaluating it yields zero and since
numeric subscripts on associative arrays work, this yields the `first' 
value.

% a[x*]=frob
zsh: bad math expression: unbalanced stack
zsh: bad math expression: unbalanced stack

Yes, `x*' is an invalid math expression, but...

Bye
 Sven


--
Sven Wischnowsky                         wischnow@informatik.hu-berlin.de


^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~1998-12-16 14:44 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
1998-12-15  8:12 Problem with associative arrays Sven Wischnowsky
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1998-12-16 14:31 Sven Wischnowsky
1998-12-14 10:55 Sven Wischnowsky
1998-12-14 15:47 ` Bart Schaefer

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