[Rcpp-devel] Datetime substraction bug ?
On 29 March 2013 at 23:37, Robin Girard wrote:
| Hi List | | why is it that we have in the Datetime definition | (here http://dirk.eddelbuettel.com/code/rcpp/html/Date_8cpp_source.html#l00271 ) | | double operator-(const Datetime& d1, const Datetime& d2) { return d2.m_dt - d1.m_dt; } | bool operator<(const Datetime &d1, const Datetime& d2) { return d1.m_dt < d2.m_dt; } | | I feel there is a contradiction | substraction shoulb be d1.m_dt - d2.m_dt; no ? It's been a while since I wrote that and I think I followed the difftime() convention in R. Or maybe not. To me d1 comes before d2 in the way the arguments are given, so d2 is larger and I want to subtract d1 from d2. In any event, if it bugs you greatly you are always free to write your own function. ;-) Dirk | | Robin | | Dr. Girard Robin | Charg? de Recherche | | MINES-ParisTech / D?partement Energ?tique et Proc?d?s / PERSEE / Groupe ERSEI | Centre Proc?d?s, Energies Renouvelables et Syst?mes Energ?tiques (PERSEE) | Center for Processes, Renewables Energies and Energy Systems | Renewable Energies & Smartgrids (ERSEI) | | 1 Rue Claude Daunesse - CS 10207 - F-06904 Sophia Antipolis Cedex | Tel: +33.4.93.67.89.64 (~99), Fax: +33.4.93.95.75.35 | e-mail : robin.girard at mines-paristech.fr | | web page perso http://www.mines-paristech.fr/Services/Annuaire/&?id=8828 | statoverflow : http://stats.stackexchange.com/users/223/robin-girard | web page centre PERSEE : http://www.cep.mines-paristech.fr/ | linkedin : http://www.linkedin.com/profile/view?id=14907272&trk=tab_pro | | Le lien vaut mieux que le bien. | ________________________________________________________ | | CONFIDENTIALITY : This e-mail and any attachments are | confidential and may be privileged. If you are not a | named recipient, please notify the sender immediately and | do not disclose the contents to another person, use it for | any purpose or store or copy the information in any medium. | | CONFIDENTIALITE : Ce message et les ?ventuelles pi?ces | attach?es sontconfidentiels et peuvent ?tre une | communication prot?g?e. Si vous n'?tes pas dans la liste | des destinataires, veuillez informer l'exp?diteur | imm?diatement et ne pas ouvrir ni divulguer le contenu | ? une tierce personne, ne pas l'utiliser pour quelque | raison que ce soit, ne pas stocker ou copier l'information | qu'il contient sur un quelconque support. | | _______________________________________________ | Rcpp-devel mailing list | Rcpp-devel at lists.r-forge.r-project.org | https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com