Re: Re: Re: Re: A list returns its last, an array returns its weight

In list context, a comma-separated group of expressions is a list.

... as long as the CSGoE is surrounded by parens e.g

my @foo = "one", "two", "three";
my @bar = ("one", "two", "three");

print @foo, $/, @bar, $/;

__output__

one
onetwothree
[download]

Otherwise it's just a CSGoE :)
HTH

_________ broquaint

update: ignore me, I'm wrong
broquaint goes off to study perlop

Comment on Re: Re: Re: Re: A list returns its last, an array returns its weight Download Code

Replies are listed 'Best First'.
Re: Re: Re: Re: Re: A list returns its last, an array returns its weight by japhy (Canon) on Nov 13, 2002 at 16:45 UTC
The line `my @foo = "one", "two", "three";` has three things going on. The first is an assignment to an array (in list context), and the other two are constant strings (in void context). "," is an operator. It has a lower precedence than "=". So the expressions `"one", "two", "three"` aren't in list context. _____________________________________________________ Jeff`[japhy]`Pinyan: Perl, regex, and perl hacker, who'd like a job (NYC-area) `s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;`	[reply]

Replies are listed 'Best First'.

Re: Re: Re: Re: Re: A list returns its last, an array returns its weight
by japhy (Canon) on Nov 13, 2002 at 16:45 UTC

my @foo = "one", "two", "three";

"," is an operator. It has a lower precedence than "=". So the expressions "one", "two", "three" aren't in list context.

_____________________________________________________
Jeff[japhy]Pinyan: Perl, regex, and perl hacker, who'd like a job (NYC-area)
s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;

[reply]