Re^6: Line numbers

> is expanding to:

> say $package, $filename, $line, $subroutine, $hasargs,$wantarray, $evaltext, $is +_require, $hints, $bitmask, $hinthash,[0];

nope, and you're showing valid code! After the last comma comes a literal arrayref [0].

  DB<100> print $a,[0];
ARRAY(0x84e16b8)
[download]

the syntax-error comes from appending [0] unseparated to a function call say().

and nothing is "expanded" at parsing time.

Cheers Rolf

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Re^7: Line numbers by gg48gg (Sexton) on Mar 19, 2012 at 17:42 UTC
Thanks for setting me straight Rolf. I was getting an error because I didn't have the say feature enabled. I guess I shouldn't have stated it so matter-of-fact. I was so sure I had it figured out. I am still a little confused about this and why anonymous' code works... `print '', (caller(0))[0];` [download] and why this gets a syntax error: `print (caller(0))[0];` [download]	[reply] [d/l] [select]
Re^8: Line numbers by LanX (Saint) on Mar 19, 2012 at 18:22 UTC
Because parens around sub-args are optional. `print '', (caller(0))[0];` means `print ( '', (caller(0))[0] );` But providing explicit parens after a sub-name will disable automatic grouping of args. Cheers Rolf	[reply] [d/l] [select]
Re^9: Line numbers by gg48gg (Sexton) on Mar 19, 2012 at 19:02 UTC
Ahhh, I think I understand. That is why this does work, right? `print ((caller(0))[0]);` [download]	[reply] [d/l]