static_cast iterator usage 1

[titanandrews]

Hello,
In the Java world, when using an Iterator over a container you have to cast the object to it's appropriate type, like this:

ArrayList list = new ArrayList(); //Note this does not use generics from Java 1.5
list.add("Hi");
list.add("Bye");
Iterator it = list.iterator();
while (it.hasNext())
{
   String strTmp = (String) it.next();
}

Is it necessary to use static_cast on an STL iterator in C++? Example:

std::vector<CString>::iterator it     = list.begin();
std::vector<CString>::iterator it_end = list.end();
while (it != it_end)
{
   CString strTmp = *it; 
   // or is this correct?
   CString strTmp = static_cast<CString>(*it);
   it++;
}

Both compile and work, but is the static_cast necessary since the compiler already knows the type?


thanks for your help,


Barry

 

[uolj]

No, the static_cast is not necessary.

CString strTmp = *it;

is fine.