From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.3 required=5.0 tests=BAYES_00,INVALID_MSGID autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: fac41,9a0ff0bffdf63657 X-Google-Attributes: gidfac41,public X-Google-Thread: 1108a1,9a0ff0bffdf63657 X-Google-Attributes: gid1108a1,public X-Google-Thread: 103376,4b06f8f15f01a568 X-Google-Attributes: gid103376,public X-Google-Thread: f43e6,9a0ff0bffdf63657 X-Google-Attributes: gidf43e6,public From: doylep@ecf.toronto.edu (Patrick Doyle) Subject: Re: Software landmines (loops) Date: 1998/09/02 Message-ID: #1/1 X-Deja-AN: 387219429 X-Nntp-Posting-Host: spark19.ecf Sender: news@ecf.toronto.edu (News Administrator) References: <35f51e53.48044143@ Organization: University of Toronto, Engineering Computing Facility Newsgroups: comp.lang.eiffel,comp.object,comp.software-eng,comp.lang.ada Date: 1998-09-02T00:00:00+00:00 List-Id: In article <6sjms6$7c4$1@hirame.wwa.com>, Robert Martin wrote: > >1. They are indeterminate. When you throw an exception, you have no idea >where control will wind up. It is not simply an exit from the current >scope, or even from the current function. By this logic, polymorphism is indeterminate too. When you call a polymorphic function, you have no idea where control will wind up. This is a Good Thing. It's what makes polymorphism powerful: the fact that you're giving someone else some control over the situation makes your code flexible. The same holds for exceptions. Having said that, I just used an exception for the first time yesterday. I (almost) never use them, and I don't even know why. But the nondeterminism isn't it. -PD -- -- Patrick Doyle doylep@ecf.toronto.edu