NAME¶
Set::Crontab - Expand
crontab(5)-style integer lists
SYNOPSIS¶
$s = Set::Crontab->new("1-9/3,>15,>30,!23", [0..30]);
if ($s->
contains(3)) { ... }
DESCRIPTION¶
Set::Crontab parses crontab-style lists of integers and defines some utility
functions to make it easier to deal with them.
Syntax¶
Numbers, ranges, *, and step values all work exactly as described in
crontab(5). A few extensions to the standard syntax are described
below.
- < and >
- <N selects the elements smaller than N from the entire range, and adds
them to the set. >N does likewise for elements larger than N.
- !
- !N excludes N from the set. It applies to the other specified range;
otherwise it applies to the specified ranges (i.e. "!3" with a
range of "1-10" corresponds to "1-2,4-10", but
">3,!7" in the same range means "4-6,8-10").
Functions¶
- new($spec, [@range])
- Creates a new Set::Crontab object and returns a reference to it.
- contains($num)
- Returns true if $num exists in the set.
- list()
- Returns the expanded list corresponding to the set.
The functions described above croak if they are called with incorrect arguments.
SEE ALSO¶
crontab(5)
AUTHOR¶
Abhijit Menon-Sen <ams@toroid.org>
Copyright 2001 Abhijit Menon-Sen <ams@toroid.org>
This module is free software; you can redistribute it and/or modify it under the
same terms as Perl itself.