> -----Original Message-----
> From: Michael R. Wolf [mailto:[EMAIL PROTECTED]]
> Sent: Monday, December 17, 2001 10:27 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Shift and "=>"
>
> => is the stringifying-coma it's just like a coma, but it
> forces its LHS to be a string.
For the benefit of others, note that this is subject to the
caveat that the unquoted word must match the rules for an
identifier, with an optional leading '-' sign.
e.g.:
foobar => 'baz' # OK
foo_bar => 'baz' # OK
foo::bar => 'baz' # OK
-foobar => 'baz' # OK (see perldoc perlop)
foo bar => 'baz' # not OK, must quote 'foo bar'
foo:bar => 'baz' # not OK, must quote 'foo:bar'
foo-bar => 'baz' # not OK, must quote 'foo-bar'
Note also that these rules apply to hash keys in braces:
$ENV{PATH} is OK; no need for $ENV{'PATH'}
$baz{foo bar} is not OK, you need $baz{'foo bar'}
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
