iterator in template class

Question

I have the following template class.

template <typename _Type, typename _Comparator = equal_to<_Type> >
class CSearch
{
...
};

It should store STL stuffs like list, set or string. I store all elements (for example strings) in private class member:

map<int,_Type> seqs;

Now I want to use iterator, but there is a problem with <_Type>::const_iterator.

template <typename _Type, typename _Comparator>
void CSearch<_Type,_Comparator>::Foo1(int id, const _Type & needle)
{
seqs.insert(make_pair(id,needle));

for(_Type::const_iterator it=seqs[0].begin();it!=seqs[0].end();it++)
cout<<*it<<" ";

cout<<endl;
}

or analogically

 for(map<int,_Type>::const_iterator it=seqs.begin();it!=seqs.end();it++)
 cout<<*it<<" ";

"but there is a problem with <_Type>::const_iterator" -- *What problem?* — Xeo, Apr 10 '13 at 11:15
"there is a problem". Great. Fancy exploring it? Then explaining it to us? Otherwise, pal, I'm afraid you're just a [_help vampire_](http://slash7.com/2006/12/22/vampires/)! — Lightness Races in Orbit, Apr 10 '13 at 11:15
probable duplicate of [some question I really can't be bothered to dig up](http://stackoverflow.com) — Lightness Races in Orbit, Apr 10 '13 at 11:16

score 1 · Answer 1 · answered Apr 10 '13 at 11:15

1

<_Type>::const_iterator is a dependent type.

Refer to it as typename <_Type>::const_iterator instead.

answered Apr 10 '13 at 11:15

Lightness Races in Orbit

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iterator in template class

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