From -5775129682496899179 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f78e5,c0e61b6a667823c0 X-Google-Attributes: gidf78e5,public From: sbnaran@localhost.localdomain (Siemel Naran) Subject: Re: no const operator[] in STL map? Date: 1999/01/24 Message-ID: #1/1 X-Deja-AN: 436350524 Approved: Fergus Henderson References: <916993358.766341@aloomba.aaii.oz.au> <36AA5AA6.2CC30DA4@ibm.net> X-Original-Date: 24 Jan 1999 16:46:39 GMT X-Complaints-To: news@news.unimelb.edu.au X-Trace: izvestia.its.unimelb.edu.au 917196851 21102 128.250.29.16 (24 Jan 1999 16:54:11 GMT) Organization: University of Illinois at Urbana-Champaign X-Auth: PGPMoose V1.1 PGP comp.std.c++ iQBFAgUANqtQH+EDnX0m9pzZAQE24AF+P58EkWLeV9vKTLlL9fmn1CEuFp77f27S sl69E46RDSd1E4blLBOwfUI6MICzmwqC =Mr4B Reply-To: sbnaran@uiuc.edu NNTP-Posting-Date: 24 Jan 1999 16:54:11 GMT Newsgroups: comp.std.c++ On 24 Jan 99 14:01:23 GMT, Biju Thomas wrote: >Does it mean that the mapped_type stored in a map should always have a >default constructor? If I don't have a default constructor for the >mapped_type, is there any way for me to specify the value from which the >mapped_type object can be copy-constructed. (For example, like in the >constructor for vector.) If you use operator[], then yes, a default constructor is required. If you use insert(const T&), then a default constructor is not required. -- ---------------------------------- Siemel B. Naran (sbnaran@uiuc.edu) ---------------------------------- --- [ comp.std.c++ is moderated. To submit articles, try just posting with ] [ your news-reader. If that fails, use mailto:std-c++@ncar.ucar.edu ] [ --- Please see the FAQ before posting. --- ] [ FAQ: http://reality.sgi.com/austern_mti/std-c++/faq.html ]