Simplicity Made Easy – Damian Conway

The second task of last week’s Perl Weekly Challenge

was to list the dates of the last Friday in every month of a given year. Many of the participants went to great lengths to create efficient and accurate solutions:

tracking the last day of each month, detecting leap years correctly,

working out formulas for the day of the month for a particular date,

managing the complex date arithmetic required. We don’t need to explicitly worry how long each month is, whether the year is a leap

year, or how to work out whether a given day is a Friday; the Date class takes

care of all that for us.

Source: blogs.perl.org