rawstorageiterator.cpp

来自「Think in C++ 2nd」· C++ 代码 · 共 31 行

//: C20:RawStorageIterator.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// Demonstrate the raw_storage_iterator
#include "Noisy.h"
#include <iostream>
#include <iterator>
#include <algorithm>
using namespace std;

int main() {
  const int quantity = 10;
  // Create raw storage and cast to desired type:
  Noisy* np = 
    (Noisy*)new char[quantity * sizeof(Noisy)];
  raw_storage_iterator<Noisy*, Noisy> rsi(np);
  for(int i = 0; i < quantity; i++)
    *rsi++ = Noisy(); // Place objects in storage
  cout << endl;
  copy(np, np + quantity,
    ostream_iterator<Noisy>(cout, " "));
  cout << endl;
  // Explicit destructor call for cleanup:
  for(int j = 0; j < quantity; j++)
    (&np[j])->~Noisy();
  // Release raw storage:
  delete (char*)np;
} ///:~