On Sat, Jul 15, 2006 at 02:12:34AM -0400, Jonathan Vanasco wrote: > > On Jul 13, 2006, at 7:41 PM, Philip M. Gollucci wrote: [...] > I thought read once that within an array declaration, [] is a real > array and not a reference-- or did i dream that up and have been > dealing with anonymous arrays all along?
Well, both :-) > > ie: > > my @real= ( 1 , [11,12,13] , 2 ,[21,22,23] ); > my $ref= [1,2,3]; > > i could have sworn i read that when @real is compiled, the array-in- > an-array is real array and not a ref The construct [1,2,3] allocates a real array somewhere in Perl's belly and returns a ref to it, much like the construct char *str="abracadabra"; allocates a character array in C, but puts a pointer to it in the variable *str. So [1, 2, [3, 4, 5], 6] just makes an array of 4 entries (of which the third, that's the one with index 2, is a reference to a freshly allocated array of three entries) and yields a raference to this whole thing. So well, real arrays are involved somewhere, and you (or your code) get a handle to those. > i'm hopped up on too much codeine right now (bronchitis), so i'm > thinking less clearly than normal. forgive what's probably a stupid > question. But you got it right, somehow ;-) I hope your bronchitis gets better -- tomás
signature.asc
Description: Digital signature
