Created
November 10, 2012 00:53
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C++11: Uniform Initialization
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/* | |
* Uniform Initialization: C++11 | |
* compiled under g++4.7.2 | |
* */ | |
#include <algorithm> | |
#include <iostream> | |
#include <vector> | |
#include <string> | |
using namespace std; | |
template<typename C> | |
void Print(const C& c) | |
{ | |
for(auto it = begin(c); it != end(c); ++it) | |
cout<<*it<<" "; | |
cout<<endl; | |
} | |
template<typename T> | |
void Print2(initializer_list<T> vals) | |
{ | |
for(auto it = vals.begin(); it != vals.end(); ++it) | |
cout<<*it<<" "; | |
cout<<endl; | |
} | |
template <typename T> | |
class Print3 | |
{ | |
vector<T> _list; | |
public: | |
Print3(T a, T b){ | |
cout<<"Print3::Print3(T,T) called"<<endl; | |
_list.push_back(a); | |
_list.push_back(b); | |
} | |
Print3(initializer_list<T> l) { | |
cout<<"Print3::Print3(initializer_list<T>) called"<<endl; | |
for_each(begin(l), end(l), [&](T n){ | |
_list.push_back(n); | |
}); | |
} | |
}; | |
int main(int argc, char **argv) | |
{ | |
int arr1[]{1,2,3,4,5}; | |
Print(arr1); | |
vector<string> arr2{"hello","world","beautiful","c++11", "world"}; | |
Print(arr2); | |
vector<int> arr3{6,7,8,9,10}; | |
Print(arr3); | |
Print2({2,4,6,8,10}); //arr4 | |
Print2({"say","hello","to","john"}); //arr5 | |
Print3<int> arr6(10,11); //constructor called | |
Print3<int> arr7{21,22}; //initializer_list called | |
Print3<int> arr8 = {31,32,33,34}; //initializer_list called | |
Print3<int> arr9 = {41,42}; //initializer_list called | |
return 0; | |
} | |
/* output | |
1 2 3 4 5 | |
hello world beautiful c++11 world | |
6 7 8 9 10 | |
2 4 6 8 10 | |
say hello to john | |
Print3::Print3(T,T) called | |
Print3::Print3(initializer_list<T>) called | |
Print3::Print3(initializer_list<T>) called | |
Print3::Print3(initializer_list<T>) called | |
*/ |
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