[webkit-dev] Do we have a style preference about const member functions?

Peter Kasting pkasting at chromium.org
Tue May 31 11:06:36 PDT 2011

On Tue, May 31, 2011 at 11:00 AM, Maciej Stachowiak <mjs at apple.com> wrote:

> I agree that const should be used for "logical constness". The rule should
> not be merely "doesn't alter any data members of this object" but rather
> "does not alter observable state of this object or vend any type of pointer
> or reference by which observable state of this object could be altered".


Because this is subtle, and can't be completely checked by a compiler,
people can often get it wrong.  Used correctly, though, const is a powerful
tool for enforcing correct API usage, allowing optimizations, and informing
readers of a class' contract and functionality.  Reviewers should understand
and consider these sorts of details.

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