> Date: Thu, 11 Apr 2002 16:10:27 +0200
> From: Eugene van der Pijll <[EMAIL PROTECTED]>
> No, values are modified, keys are not. But that's not so strange: hash
> values are scalars; hash keys are strings:
>
> $ perl -le'$a{[1,2,3]} = [4,5,6]; print "$_: @$_" for %a'
> ARRAY(0x140001ad0):
> ARRAY(0x1400019e0): 4 5 6
>
> s/// and other operators only work on scalar values, so a key has to be
> copied into a scalar value to be assigned to $_. A hash value is already
> a value, and can be aliased to $_.
>
> Does that make sense?
Yes.
By the way, the thing I was referring to earlier that only 'works' on
5.6.x was "map s///, sort %a" --- and that doesn't 'work' on 5.004,
even though other variants like "for (sort @x) { s/// }" seem to. I
don't have easy access myself to versions between 5.004 and 5.6, so I
don't know when it changed exactly --- but I have reason to think it
was recently.
Lars Mathiesen (U of Copenhagen CS Dep) <[EMAIL PROTECTED]> (Humour NOT marked)
