Re: [[gtkmm] ArrayHandle request]

[Murray Cumming <murrayc usa net>]

ArrayHandle is an intermediate type. You should not be using it. Try using a
vector or list instead.

"Robert J. Hansen" <rjhansen inav net> wrote:
> The following code doesn't work:
> 
> void Foo::fileOkClicked(FileSelection *fs) {
>   ArrayHandle<string> selections = fs->get_selections();
>   ArrayHandle<string>::const_iterator index, end;
>   index = selections.begin();
>   end = selections.end();
>   while (index != end) // do magic
> }
> 
> 
> The following code does work:
> 
> void Foo::fileOkClicked(FileSelection *fs) {
>   ArrayHandle<string> selections = fs->get_selections();
>   ArrayHandle<string>::const_iterator index = selections.begin();
>   ArrayHandle<string>::const_iterator end = selections.end();
>   while (index != end) // do magic
> }
> 
> 
> .. Looking at the documentation, apparently const_iterator is a typedef
> to a class which requires a CType* to be passed into it, which means
> that STL semantics are broken for this particular iterator--you can do
> 
> list<foo>::iterator bar
> map<foo>::iterator bar
> vector<foo>::iterator bar
> 
> .. etc., but you can't do
> 
> ArrayHandle<foo>::iterator bar
> 
> How hard would it be to give ArrayHandle iterators STL-like semantics?
> 
> -- 
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> 
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Murray Cumming
murrayc usa net
www.murrayc.com