[Quantlib-dev] Chinese calendar

SourceForge Headquarters 1320 Columbia Street Suite 310 San Diego, CA 92101 +1 (858) 422-6466

Hi everyone,
I'm working on Chinese calendar and I want to share with you some ideas about it.
I was thinking to create a derived class from Impl (like WesternImpl and OrthodoxImpl) with few methods for the most popular holidays i.e. Chinese New Year, Buddha's Birthday and Mid-Autumn Festival.

Problems start when countries celebrate both Easter and lunisolar holidays: all classes implement the virtual method isWeekend(Weekday).
After thinking about it for a while, I came to the following different conclusions:

- Lazy way: copy in ChineseImpl the easterMonday method

- Hard-working way: define Day easterMonday(Year y, string religion) as public method of the class Calendar. In this way the existence of the old classes WesternImpl and OrthodoxImpl doesn't have sense anymore and they could be replaced by something like Gregorian, Chinese, Islamic and Hebrew.

- Mark all the Impl derived classes (WesternImpl, OrthodoxImpl and ChineseImpl) as virtual. This is the typical solution to the diamond problem, but I'm not so proficient in C++ language to understand if it makes sense and solves our problems.

Any suggestions on how to proceed?

Thanks
Riccardo

Prima di stampare, pensa all'ambiente ** Think about the environment before printing

________________________________

This e-mail is subject to terms available at the following link:
http://www.bancaimi.com/bancaimi/email_disclaimer.html.
Please read the hyperlink carefully as it contains the conditions governing any electronic communications between you and Banca IMI SpA. By messaging with Banca IMI SpA you agree to such terms and conditions of use. Banca IMI SpA may amend these terms and conditions at any time without notice. You should check the relevant webpage from time to time to review the current terms and conditions because they are binding on you. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format. Please note that, if you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is strictly prohibited and may be unlawful.

________________________________

Il presente messaggio, inclusi gli eventuali allegati, ha natura aziendale e potrebbe contenere informazioni confidenziali e/o riservate. Chiunque lo ricevesse per errore, è pregato di avvisare tempestivamente il mittente e di cancellarlo.
E’ strettamente vietata qualsiasi forma di utilizzo, riproduzione o diffusione non autorizzata del contenuto di questo messaggio o di parte di esso.
Pur essendo state assunte le dovute precauzioni per ridurre al minimo il rischio di trasmissione di virus, si suggerisce di effettuare gli opportuni controlli sui documenti allegati al presente messaggio. Non si assume alcuna responsabilità per eventuali danni o perdite derivanti dalla presenza di virus.

Per lo svolgimento delle attività di investimento nel Regno Unito, la società è autorizzata da Banca d'Italia ed è soggetta alla vigilanza limitata della Financial Conduct Authority ( FCA ) e della Prudential Regulation Authority ( PRA ) . Maggiori informazioni in merito ai poteri di vigilanza della Financial Conduct Authority ( FCA ) e della Prudential Regulation Authority ( PRA ) sono a disposizione previa richiesta.

Nel Regno Unito Intesa Sanpaolo S.p.A. opera attraverso la filiale di Londra, sita in 90 Queen Street, London EC4N 1SA, registrata in Inghilterra & Galles sotto No.FC016201, Branch No.BR000036

In osservanza dei requisito imposti dal Internal Revenue Service (Agenzia delle Entrate degli Stati Uniti), qualunque discussione relativa a temi di natura fiscale contenuta in questo messaggio o nei suoi allegati non e’ intesa ne’ e’ stata scritta per essere utilizzata, ne’ puo’ essere utilizata per (i) evitare l’imposizione di gravami fiscali secondo il codice tributario vigente negli Stati Uniti o (ii) per promuovere, sollecitare o raccomandare una operazione finanziaria o altra transazione indirizzata ad un altro destinatario.

Nella Repubblica d’Irlanda, Intesa Sanpaolo Bank Ireland plc è regolamentata dalla Banca Centrale d’Irlanda ed è parte del Gruppo Bancario Intesa Sanpaolo S.p.A. Registrata in Irlanda come società numero 125216 – IVA Reg. IE4817418C IE, sita in, KBC House, 4 George Dock, IFSC, Dublino 1, Irlanda.

***

________________________________

This email (including any attachment) is a corporate message and may contain confidential and/or privileged and/or proprietary information. If you have received this email in error, please notify the sender immediately, do not use or share it and destroy this email. Any unauthorised use, copying or disclosure of the material in this email or of parts hereof (including reliance thereon) is strictly forbidden.
We have taken precautions to minimize the risk of transmitting software viruses but nevertheless advise you to carry out your own virus checks on any attachment of this message. We accept no liability for loss or damage caused by software viruses.

For the conduct of investment business in the UK, the Company is authorised by Banca d’Italia and subject to limited regulation in the UK by the Financial Conduct Authority ( FCA ) and the Prudential Regulation Authority ( PRA ). Details about the extent of our regulation by the Financial Conduct Authority ( FCA ) and the Prudential Regulation Authority ( PRA ) are available from us on request.

In the UK Intesa Sanpaolo S.p.A. operates through its London Branch, located at 90 Queen Street, London EC4N 1SA. Registered in England & Wales under No.FC016201, Branch No.BR000036

To comply with requirements imposed by the IRS, we inform you that any discussion of U.S. federal tax issues contained herein (including any attachments) was not intended or written to be used, and cannot be used by you, for the purpose of (i) avoiding penalties under the Internal Revenue Code or (ii) promoting, marketing or recommending any transaction or matter addressed herein to another party.

In the Republic of Ireland, Intesa Sanpaolo Bank Ireland plc is regulated by the Central Bank of Ireland and is a member of the Intesa Sanpaolo Group. It is registered in Ireland as company no.125216 – VAT Reg. No. IE 4817418C and located at, 3rd Floor, KBC House, 4 George’s Dock, IFSC, Dublin 1, Ireland.