Select Code to Download

# 0. Just-in-time variable declaration and initialization.

# 1. Variables in consistent case (all lower or all upper)

...
    $BAZ
    $FOO_BAR
);

# 4. Global lexicals in all lower case, and 
#     prefixed with some text to mark them as such.
#     For example...
my ($glob_foo, $glob_bar, $glob_baz, @glob_foo_bar);

# 5. Local lexicals on all lowercase
sub foo {
...
    }
    return $bar;
}

# 5.5. Use prefixes to scope other logically different 
#      vars. For example, 'cgi_' to prefix vars holding 
...

# 7. Rules 1-5 apply to rule 6 as well... so, an array ref 
#    inside a sub would be $this_aref_bar, etc.

# 8. modified: I like camelCase, however, the real purpose
# here is to visually distinguish a sub from a var. Choose 
...
# 9.5. Never export anything by default.

@EXPORT_OK

# 10. Always pass named vars to subs
doThis('with' => $that, 'and' = $something_else);