Re: [Quantlib-users] joint calendar

[Chak J. W. <Cha...@mo...>]

Hi, Luigi and Jens,
The behavior in Jens' e-mail is exactly what we need.  This is mainly used
for cross-ccy swap.  for USD and Yen swap on Libor , the holiday is typically
NewYork, London and Tokyo (i.e. union of holiday.), and for quite a lot of
swiss product, we use Zurich/London.   This is rather important (yet pretty
simple)

Is it possible to add this simple class to the 0.3.1 release?

Best regards,
Jack


Luigi Ballabio wrote:

> At 1:56 PM +0000 1/24/03, Chak Jack Wong wrote:
> >Something very simple, how can I specify NewYork and London as calendar?
>
> Jack,
>         it's not entirely clear to me whether you want a calendar
> whose set of business days is the union or the intersection of the
> set of business days of New York and London. However, the principle
> is the same: you use the Composite pattern. You should derive a new
> calendar and a corresponding calendar implementation. The constructor
> of the new Calendar class takes two Calendars c1 and c2 and just
> passes them to its implementation, which stores them. The
> implementation defines its isBusinessDay(date) method either as:
>
>     return c1.isBusinessDay(date) || c2.isBusinessDay(date);
>
> or:
>
>     return c1.isBusinessDay(date) && c2.isBusinessDay(date);
>
> depending on the desired behavior. You'll also have to implement its
> name() method by composing c1.name() and c2.name() somehow.
>
> You're welcome to come back with some tentative code if you get into
> any problem---I'll try and give you a hand.
>
> Later,
>         Luigi
>
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