C++Talk.NET C++ language newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Question about the requirements of std::vector          C++Talk.NET Forum Index -> C++ Language (Moderated) View previous topic :: View next topic   Author Message cdiggins@videotron.ca Guest Posted: Fri Nov 18, 2005 12:09 am    Post subject: Question about the requirements of std::vector I have been having a debate with my colleagues. They are claiming that: "The standard specifies that &v[0] for a vector must give a contiguous array that can be used by a function expecting a C-style array." I have searched the standard but I can not substantiate their claim (and nor can they), and I believe it to be false. Can anyone point me to where in the standard that is specified? Thank you very much in advance, Christopher Diggins http://www.cdiggins.com - Home page http://www.cpp-cookbook.com - C++ Cookbook [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. First time posters: Do this! ] Back to top Carl Barron Guest Posted: Fri Nov 18, 2005 1:04 am    Post subject: Re: Question about the requirements of std::vector In article <1132247911.254285.237500 (AT) g44g2000cwa (DOT) googlegroups.com>, <cdiggins (AT) videotron (DOT) ca> wrote: Quote: I have been having a debate with my colleagues. They are claiming that: "The standard specifies that &v[0] for a vector must give a contiguous array that can be used by a function expecting a C-style array." I have searched the standard but I can not substantiate their claim (and nor can they), and I believe it to be false. Can anyone point me to where in the standard that is specified? Thank you very much in advance, Christopher Diggins http://www.cdiggins.com - Home page http://www.cpp-cookbook.com - C++ Cookbook it is true that the data of vector is continguous, it has been made so by correction in the current draft of the standard [N1804=05-0064]. It was not specified in the original C++98. [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. First time posters: Do this! ] Back to top int2str@gmail.com Guest Posted: Fri Nov 18, 2005 1:04 am    Post subject: Re: Question about the requirements of std::vector [email]cdiggins (AT) videotron (DOT) ca[/email] wrote: Quote: I have been having a debate with my colleagues. They are claiming that: "The standard specifies that &v[0] for a vector must give a contiguous array that can be used by a function expecting a C-style array." I have searched the standard but I can not substantiate their claim (and nor can they), and I believe it to be false. Can anyone point me to where in the standard that is specified? 23.2.4 para 1 might help: "The elements of a vector are stored contiguously, meaning that if v is a vector<T, Allocator> where T is some type other than bool, then it obeys the identity &v[n] == &v[0] + n for all 0 <= n < v.size(). [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. First time posters: Do this! ] Back to top red floyd Guest Posted: Fri Nov 18, 2005 10:29 am    Post subject: Re: Question about the requirements of std::vector [email]cdiggins (AT) videotron (DOT) ca[/email] wrote: Quote: I have been having a debate with my colleagues. They are claiming that: "The standard specifies that &v[0] for a vector must give a contiguous array that can be used by a function expecting a C-style array." I have searched the standard but I can not substantiate their claim (and nor can they), and I believe it to be false. Can anyone point me to where in the standard that is specified? I believe it was corrected in TC1. 23.2.4/1: .... "The elements of a vector are stored contiguously, meaning that if v is a vector<T, Allocator>, where T is some type other than bool, then it obeys the identity &v[n] == &v[0] + n for all 0 <= n < v.size()." [ See http://www.gotw.ca/resources/clcm.htm for info about ] [ comp.lang.c++.moderated. First time posters: Do this! ] Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         C++Talk.NET Forum Index -> C++ Language (Moderated) All times are GMT Page 1 of 1   Jump to: Select a forum C/C++----------------C LanguageC Language (Moderated)C++ Language (Moderated)C++ language (comp.lang.c++)C++ language, library and standards Non-English C/C++ Newsgroups----------------C++ (German)C++ (French)  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.