Hi Monks,

I'm trying to design and implement a Perl module which takes a range list in string form and turns it into an object which represents the corresponding list of numbers and allows the calling code to access the list.

This is a bit of background:

An email server may be asked to operate on a number of messages at a time (e.g. 'DELETE' or 'FETCH'). Each message is identified by a number, and the messages a particular operation applies to is specified by a range-list. (e.g. DELETE 1, 4, 6-10)

A range-list is specified as a string of comma-separated elements (with optional whitespace). Each element is either a single number or a range (e.g. 10-20). A range is inclusive (i.e. it includes both end-points, so the range 10-12 includes messages 10, 11 and 12). Numbers may be specified multiple times, and ranges may overlap. The list may be in any particular order.

Examples:
1, 3, 5-7 specifies 1, 3, 5, 6, 7
1-5, 2, 4 specifies 1, 2, 3, 4, 5
1-3, 2-5 specified 1, 2, 3, 4, 5

I'm putting together my idea but any help would be greatly appreciated. Thanks,

In reply to Perl Module - take in a String, output object by MikeEndo

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