From 4423522426449018965 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 109fba,9dc775cb38879a6d X-Google-Attributes: gid109fba,public X-Google-Thread: f78e5,9dc775cb38879a6d X-Google-Attributes: gidf78e5,public X-Google-Thread: ffc26,9dc775cb38879a6d X-Google-Attributes: gidffc26,public X-Google-ArrivalTime: 1994-05-18 07:20:09 PST Path: bga.com!news.sprintlink.net!sundog.tiac.net!usenet.elf.com!rpi!usc!howland.reston.ans.net!pipex!sunic!EU.net!Austria.EU.net!gatekeeper.eeam.elin.co.at!venus!hasenberger From: hasenberger@venus (Ronald Hasenberger) Newsgroups: comp.sys.amiga.programmer,comp.lang.c++,comp.std.c++ Subject: Re: error handling in constructors and overloaded operators Message-ID: <1994May18.102041.81@venus> Date: 18 May 94 10:20:41 +1000 References: Organization: ELIN Energieanwendung Lines: 31 Xref: bga.com comp.sys.amiga.programmer:8935 comp.lang.c++:15800 comp.std.c++:2326 > Suppose the constructor should fail for some reason, such as a low > memory condition during the "el2" buffer allocation. What is the > best way of indicating constructor failure so that action may be taken > by the main program ? Use a two step initializing by having a constructor that does not (!) allocate any memory and for example a memeber function Create() that does the allocation. Create could then return an error code > Suppose the overloaded assignment should fail for some reason, such > as a low memory condition when allocating a new buffer for > "obj2cls1.el2". What is the best way of indicating assignment failure > so that action may be taken by the main program ? If your Compiler supports it you could use exceptions. I am not experienced in using exceptions but at short you will have the possibility to setup some conditions (for example low memory) and you are able to define actions to be taken if this condition occurs. Hope, I could help at least for your first problem Ronald -- ------------------------------------------------------------------------- Ronald HASENBERGER Hasenberger@elin.co.at ELIN-Energieanwendung GesmbH A-1141 Vienna, Austria, Penzingerstr.76 Phone: +43 1 89100-3524 Fax: +43 1 8946046