Re: my $x or my ($x)

[davidrw]

in reply to my $x or my ($x)

for the behavior, besides all of the above posts, also consider this simple example:

  my @x = ('a' .. 'e');
  my $y = @x;
  my ($z) = @x;
  warn $y;  # 5
  warn $z;  # 'a'

Because, in scalar context, an array variable will evaluate to it's length.

I'd say that, in general, it's "more appropriate" to declare in list context only when list context is actually needed -- e.g. declaring multiple variables at once, or sometihng like the my ($z) = @x; above where you're working w/ an array on the RHS.

Another common use of list context:

function foo {
  my ($bar, $stuff, $blah) = @_;   # get the arguments
  ...
}

[johngg]

I know that it is really not necessary but I have got into the habit when counting elements in a list of doing

my $elems = scalar @list;

rather than

my $elems = @list;

just to make it crystal clear for "those that come after" what is going on. That the question gets asked demonstrates why such practices can be helpful.

Cheers,

JohnGG