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Last Friday of each month: Difference between revisions
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lastDay(2012,D.Friday)</lang>
For each month in year y, count back from the last day in the month
until a Friday is found and print that date.
A pump is a loop over a sequence and Void.Stop stops the pump with a value.
The first parameter to a pump is the sink.
All the imperative loop constructs are available but I didn't feel like using them.
A wrap is a function closure over unknown values in the function,
necessary because functions are not lexically scoped.
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2012-12-28
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