Commit 8e894b70fa4f07dd2bb0f84c361364ae1697d23b
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121e73b8
Added foreach example
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examples09/02-iterator/foreach.cpp
0 → 100644
| 1 | +#include <stddef.h> | ||
| 2 | +#include <iostream> | ||
| 3 | + | ||
| 4 | +class Iterator; | ||
| 5 | + | ||
| 6 | +class Collection | ||
| 7 | +{ | ||
| 8 | + static const size_t size = 10; | ||
| 9 | + int data[size]; | ||
| 10 | + using iterator = Iterator; | ||
| 11 | + friend class Iterator; | ||
| 12 | +public: | ||
| 13 | + Iterator begin(); | ||
| 14 | + Iterator end(); | ||
| 15 | +}; | ||
| 16 | + | ||
| 17 | +class Iterator | ||
| 18 | +{ | ||
| 19 | + int i; | ||
| 20 | + Collection* c; | ||
| 21 | +public: | ||
| 22 | + Iterator(int ii, Collection* cc) : i(ii), c(cc){}; | ||
| 23 | + int& operator *() | ||
| 24 | + { | ||
| 25 | + return c->data[i]; | ||
| 26 | + } | ||
| 27 | + Iterator& operator++() | ||
| 28 | + { | ||
| 29 | + ++i; | ||
| 30 | + return *this; | ||
| 31 | + } | ||
| 32 | + bool operator!=(const Iterator& o) | ||
| 33 | + { | ||
| 34 | + return i != o.i; | ||
| 35 | + } | ||
| 36 | + | ||
| 37 | +}; | ||
| 38 | + | ||
| 39 | +Iterator Collection::begin() | ||
| 40 | +{ | ||
| 41 | + return Iterator(0,this); | ||
| 42 | +} | ||
| 43 | + | ||
| 44 | +Iterator Collection::end() | ||
| 45 | +{ | ||
| 46 | + return Iterator(Collection::size-1,this); | ||
| 47 | +} | ||
| 48 | + | ||
| 49 | +int main() | ||
| 50 | +{ | ||
| 51 | +Collection c; | ||
| 52 | + | ||
| 53 | +int a = 3; | ||
| 54 | + | ||
| 55 | +for(auto& i: c) | ||
| 56 | + i = a++; | ||
| 57 | + | ||
| 58 | +for(auto i: c) | ||
| 59 | + std::cout << i << std::endl; | ||
| 60 | + | ||
| 61 | +} | ||
| 62 | + | ||
| 63 | + | ||
| 0 | \ No newline at end of file | 64 | \ No newline at end of file |
examples09/02-iterator/makefile
0 → 100644
examples09/02-algorithm/algo1.cpp renamed to examples09/03-algorithm/algo1.cpp
examples09/02-algorithm/algo2.cpp renamed to examples09/03-algorithm/algo2.cpp
examples09/02-algorithm/makefile renamed to examples09/03-algorithm/makefile
examples09/03-functionobject/fun1.cpp renamed to examples09/04-functionobject/fun1.cpp
examples09/03-functionobject/fun2.cpp renamed to examples09/04-functionobject/fun2.cpp
examples09/03-functionobject/fun3.cpp renamed to examples09/04-functionobject/fun3.cpp
examples09/03-functionobject/makefile renamed to examples09/04-functionobject/makefile
examples09/04-unordered_set/employee.h renamed to examples09/05-unordered_set/employee.h
examples09/04-unordered_set/makefile renamed to examples09/05-unordered_set/makefile
examples09/04-unordered_set/unordered_set.cpp renamed to examples09/05-unordered_set/unordered_set.cpp
examples09/05-closures/fun1.cpp renamed to examples09/06-closures/fun1.cpp
examples09/05-closures/fun2.cpp renamed to examples09/06-closures/fun2.cpp
examples09/05-closures/fun3.cpp renamed to examples09/06-closures/fun3.cpp
examples09/05-closures/fun4.cpp renamed to examples09/06-closures/fun4.cpp
examples09/05-closures/fun5.cpp renamed to examples09/06-closures/fun5.cpp
examples09/05-closures/makefile renamed to examples09/06-closures/makefile