From all the answers you got, the one from Athanasius was IMHO the best so far.

It's elementary for Perl that @arrays and %hashes are flattened in list context, not only in the case of a foreach (LIST), but whenever the docs talk about "LIST" as parameter.

from perldata#List value constructors

LISTs do automatic interpolation of sublists. That is, when a LIST is evaluated, each element of the list is evaluated in list context, and the resulting list value is interpolated into LIST just as if each individual element were a member of LIST. Thus arrays and hashes lose their identity in a LIST--the list

(@foo,@bar,&SomeSub,%glarch)

contains all the elements of @foo followed by all the elements of @bar, followed by all the elements returned by the subroutine named SomeSub called in list context, followed by the key/value pairs of %glarch.

for instance 
  DB<105> @a=1..3
 => (1, 2, 3)

  DB<106> @b=a..c
 => ("a", "b", "c")

  DB<107> @c=(@a,@b)
 => (1, 2, 3, "a", "b", "c")

[download]

HTH! =)

Cheers Rolf

( addicted to the Perl Programming Language)

In reply to Re^3: Passing multiple arrays to foreach loop (list flattening) by LanX
in thread Passing multiple arrays to foreach loop by deshdaaz

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.