Mortgages may compound differently -- monthly (the most common in the
USA), biweekly, or semi-annually (Canadian). The common thing between
them is that there's still a fixed number of payments. I will make the
interface support all of these methods.
The following web site has some formulas and derivations:
http://www.hughchou.org/calc/formula.html
I guess I could do Finance::MortgageCalculator and
Finance::MortgageCalculator::US (which would be an empty subclass) and
then people could inherit from Finance::MortageCalculator and create
their own country-specific calculators.
(I'd still like the word "Calculator" being present in the name. When I
look at module named "Finance::Mortgage" I think to myself -- "mortgage
*what*?")
- Dmitri.
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