I think the subroutine is not entirely correct. Without te Carp which I don't have on my system I came up with this working version:
sub menu {
my ($title, @option) = @{shift(@_)};
my (@name, @action);
($name[@name], $action[@action]) = splice @option, 0, 2
while @option;
while(1) {
print "\n$title\n";
print map "$_. $name[$_ - 1]\n", 1 .. @name;
print '> ';
chomp (my $choice = readline *STDIN);
if ($choice and $choice > 0 and $choice <= @action) {
my $do_action = $action[$choice-1];
return unless defined $do_action;
$do_action->() if 'CODE' eq ref $action[$choice-1];
menu($action[$choice-1]) if 'ARRAY' eq ref $action[$choice-1];
+
} else {
print "Invalid choice: $choice\n"
}
}
}
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: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.