ostream_iterator

I have a code snippet given by my instructor in data structures.

Code:

---

template<class T>
void myDataStruct<T>::output(ostream& out) const
{// Put the list into the stream out.
  copy(element, element + listSize, ostream_iterator<T>(cout, "  "));
}

// operator overload <<
template <class T>
ostream& operator<<(ostream& out, const myDataStruct<T>& x)
  {x.output(out); return out;}

---

when I compile, I get these errors:

myDataStruct.h: In member function ‘T& myDataStruct<T>::get(int) const’:
myDataStruct.h:77: error: expected primary-expression before ‘&’ token
myDataStruct.h: In member function ‘void myDataStruct<T>::output(std::ostream&) const’:
myDataStruct.h:138: error: ‘ostream_iterator’ was not declared in this scope
myDataStruct.h:138: error: expected primary-expression before ‘>’ token


I don't get what's going on... this should work "out of the box" sortof speak... at least i'd expect that form my porfessor.

O_o

Fire your professor...

Soma

Code:

---

template<class T>
void myDataStruct<T>::output(std::ostream& out) const
{// Put the list into the stream out.
  using namespace std;
  const char separator[] = {out.fill(), '\0'};
  // and really you should use a `std::ostream::sentry' object
  copy(element, element + listSize, ostream_iterator<T>(out, separator));
}

// operator overload <<
template <class T>
std::ostream& operator<<(std::ostream& out, const myDataStruct<T>& x)
  {x.output(out); return out;}

---

o wow..
I'm still getting:

Code:

---


In file included from myDataStruct.cpp:12:
myDataStruct.h: In member function ‘void myDataStruct<T>::output(std::ostream&) const’:
myDataStruct.h:140: error: ‘ostream_iterator’ was not declared in this scope
myDataStruct.h:140: error: expected primary-expression before ‘>’ token

---

o_O

Seriously, you need a better teacher.

Soma

ostream_iterator

ujhahahahahhahh!!! how did you do that??

Code:

---

myDataStruct.h: In member function ‘void myDataStruct<T>:utput(std:stream&) const’:
myDataStruct.h:138: error: ‘ostream_iterator’ was not declared in this scope
myDataStruct.h:138: error: expected primary-expression before ‘>’ token

---

That could be caused by not having the <iterator> header included.

DOOOHHHH!!!!!! As homer would say!

indeed, i had forgotten to #include <iterator>