Doing this with separate modules would not be the normal way to go in Perl. For one thing by tradition a module that returns 0 raises an exception. Instead I would suggest that you call a series of functions. That could be coded as simply as this: 
sub do_each_until_false {
    for (@_) {
        return 0 unless $_->();
    }
    return 1;
}

[download]
and then called like this: 
if (
    do_each_until_false(
        \&function1,
        \&function2,
        sub {require Foo; Foo::bar()},
        \&function3,
        # etc.
    )
) {
    print "All done\n";
}
else {
    print "FAILED\n";
}

[download]
However this is not really a significant win over just writing straight line code using a bare block: 
my $is_success = 0;
BLOCK: {
    function1() or last BLOCK;
    function2() or last BLOCK;
    require Foo;
    Foo::bar() or last BLOCK;
    function3() or last BLOCK;
    # etc;
    $is_success = 1;
}

if ($is_success) {
    print "All done\n";
}
else {
    print "FAILED\n";
}

[download]
Particularly if you discover that some of your functions need to pass parameters in and out, or sometimes you need to store information from one function call to the next.

In reply to Re: Code for Control Module by tilly
in thread Code for Control Module by perlpal

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