Re: Variables in for loop (style issue)
Geoff Carlton wrote:
> Walter Bright wrote:
>>There's got to be a better way - one that offers self-documentation as
>>well as a language guarantee that if code plays by the language rules,
>>then const is really constant.
> Good luck with your search!
> The main utility I have with const in C++ is with basic value types, and
> one very common case is using const to avoid passing by value. That
> is, returning "const T&" rather than "T".
Well, it not just that we want to avoid passing by value, it's also a
matter of encapsulation:
const vctor3& direction() const;
Without const we can choose between
1. bad encapsulation (we return a mutable reference)
2. bad performance (we return a copy or the value type is immutable)
Pick your poison
[ See http://www.gotw.ca/resources/clcm.htm for info about ]
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