My understanding is that it's simpler than that. @ means list and $ means
scalar, and essentially one element in a list is really a scalar. $foo[0]
gets you the first scalar from the list @foo.
$count = scalar(@foo);
gets you a count of all the elements in the list. At least to me the @/$
conventions make things *less* confusing, not more.
-----
Scot Robnett
inSite Internet Solutions
[EMAIL PROTECTED]
-----Original Message-----
From: Lance Murray [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, December 18, 2002 11:02 AM
To: [EMAIL PROTECTED]
Subject: Confusion on @array vs $array[] vs $array
Hello:
I have been fairly confused on the intermixing of array naming standards.
If I
understand correctly, the @array syntaxt is used to refer to the whole
array,
while $array[n] is refered to specific elements.
In my thinking, it would have been less confusing to use @array[n] to
address
specific elements, but Perl complaines bitterly when warnings &/or strict is
enabled.
Is the rational for the "$"array[] character for identifying "@"array
elements
due to the fact that the $ character has special meaning (denotes variable
or
element) within double quoted text, while the @ sign has no special meanign
within double quotes.
Anyway, perhaps one of you syntactical thought police could give me some
insights to the rational. I find it very confusing that the $ and @
characters
are supposed to be used interchangeably to denote arrays, particularyly when
I'm
trying to fathom the relation to other issues such as scalar or list
context.
As I recall, hashes arso use % and @ interchangeably.
Thanks,
Lance
----------------------------------------------------------------------------
--
#!/usr/bin/perl
print "Lance Murray, Information and Communications Systems\n", #
department
"The Church of Jesus Christ of Latter-Day Saints\n", # employer and
religion
"(801) 240-6583, murraylk\@ldschurch.org\n\n", # work phone number and
email
"\"Better to do a little well than a lot poorly (Socrates)\"\n"; #
philosophy
@P=split//,".URRUU\c8R";@d=split//,"\nrekcah xinU / lreP rehtona tsuJ";sub
p{
@p{"r$p","u$p"}=(P,P);pipe"r$p","u$p";++$p;($q*=2)+=$f=!fork;map{$P=$P[$f^or
d
($p{$_})&6];$p{$_}=/
^$P/ix?$P:close$_}keys%p}p;p;p;p;p;map{$p{$_}=~/^[P.]/&&
close$_}%p;wait until$?;map{/^r/&&<$_>}%p;$_=$d[$q];sleep
rand(2)if/\S/;print
----------------------------------------------------------------------------
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