Posted by
Kakhkhor Abdijalilov on
URL: http://quantlib.414.s1.nabble.com/Handle-class-conversion-Open-discussion-tp8938.html
Dear all,
Current implementation of Handle class doesn't permit conversion from
Handle<Derived> to Handle<Base>. If we supply Handle<Base> with
converting constructor, an instance of Handle<Derived> could be
substituted where an instance of Handle<Base> is expected. For
example, an instance of Handle<SimpleQuote> could be passed to term
structure constructors instead of Handle<Quote> instance. This
conversion makes sense, since SimpleQuote is a subtype of Quote.
Enabling conversion would allow user code use derived class features
without a need for dynamic casting. Safety of conversion can be
checked at runtime, similar to pointer down-casting.
I did some coding in this direction and so far everything looks OK.
Since it is a design decision and not a bug fix, I wanted to know what
other think before submitting my code.
Regards,
Kakhkhor Abdijalilov.
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