Re: [boost] Re: FOREACH / C++ "for" proposal

From: Dave Harris (brangdon_at_[hidden])
Date: 2005-05-11 12:56:42

In-Reply-To: <428133DD.20505_at_[hidden]>
darren_at_[hidden] (Darren Cook) wrote (abridged):
> Wouldn't someone wanting to do something "clever" like that fall back to
> using a normal for() or while() loop? I thought for(i:vect){} is a
> convenience function to save typing and make code clearer; can it do
> something a while() loop cannot?

I don't think it makes the code clearer, because it looks like a use of i 
rather than a declaration. I think it is very important for readability 
that names be declared explicitly.

That is a general point. What you are proposing:

    for (i: vec)

is especially misleading because it is inconsistent with:

    for (i = vec.begin(); i != vec.end(); ++i)

I really don't think one should declare i and the other, not.

What's wrong with:

    for (auto i: vec)

?

-- Dave Harris, Nottingham, UK.