src/work/deba/test.cpp
author alpar
Mon, 03 Jan 2005 16:19:46 +0000
changeset 1041 9d503ce002db
child 1210 f02396423239
permissions -rw-r--r--
- Several convenience maps added to maps.h
- Improvements in doc
     1 #include <iostream>
     2 
     3 using namespace std;
     4 
     5 
     6 struct _EmptyList {
     7   void write() const {}
     8 };
     9 
    10 template <typename _Item, typename _Next>
    11 struct _AddNode {
    12   typedef _Next Next;
    13   typedef _Item Item;
    14   
    15   const Item item;
    16   const Next& next;
    17   
    18   _AddNode(const Item& _item, const Next& _next) 
    19     : item(_item), next(_next) {}
    20 
    21   void write() const {
    22     next.write();
    23     cout << item << ' ';
    24   }
    25 };
    26 
    27 template <typename _List = _EmptyList>
    28 struct _Writer {
    29   typedef _List List;
    30 
    31   const List list;
    32 
    33   _Writer(const List& _list = List()) : list(_list) {}
    34 
    35   
    36   template <typename Item> _Writer<_AddNode<Item, List> > add(Item item) const {
    37     return _Writer<_AddNode<Item, List> >(_AddNode<Item, List>(item, list));
    38   }
    39 
    40   void write() const {
    41     list.write();
    42     cout << endl;
    43   }
    44 };
    45 
    46 
    47 typedef _Writer<> Writer;
    48 
    49 int main() {
    50   Writer().add(3).add("alpha").add(4.53).write();
    51 }