CGAL users discussion list

[Laurent Rineau <>]

On Friday 04 January 2008 08:28:30 Mahmood NT wrote:
> Hi,
>
> >Alternatively, it might help, to write "const Alg_point_2& first",
> >but this is a wild guess looking at the error message.
>
> it was not a bad guess... but I add "const" at the end of decleration as:
>
> bool isShorter( Alg_point_2& first, Alg_point_2& second, Alg_point_2& goal
> ) const
>
> and the error actually gone! I do not know why, but the problem solved

You should use const a little more. All the variables of isShorter can be 
const, in your code. Do you know the "C++ FAQ"? It is a nice source of 
information. As for the uses of const, you can read that page:

http://www.parashift.com/c++-faq-lite/const-correctness.html

-- 
Laurent Rineau
INRIA - Sophia Antipolis
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