[SOLVED] In Perl, how can I unpack to several variables?

In Perl, how can I unpack to several variables?

I have a struct which contains:

struct mystruct{
  int                id[10];
  char               text[40];
  unsigned short int len;
};

And I'm trying to unpack it in a single line, something like this:

  my(@ids, $text, $length) = unpack("N10C40n", $buff);

But everything is going to the first array(@ids). I've tried templates as "N10 C40 n" and "(N10)(C40)(n)".

So, either this can't be done, or I'm not using the proper template string.

Note: I'm using big-endian data

How can I do it?

Solution

In list assignment, the first array or hash will eat everything (how would it know where to stop?). Try this instead:

my @unpacked        = unpack "N10Z40n", $buff;
my @ids             = @unpacked[0 .. 9];
my ($text, $length) = @unpacked[10, 11];

You could also say

my @ids;
(@ids[0 .. 9], my ($text, $length)) = unpack "N10Z40n", $buff;