C++模型
函数模板
#include<iostream>
#include<vector>
#include<string>
using namespace std;
template <typename Comparable>
const Comparable & findMax(const vector<Comparable> & a)
{
int maxIndex = 0;
for(int i=1; i < a.size(); i++){
if(a[maxIndex] < a[i]){
maxIndex = i;
}
}
return a[maxIndex];
}
int main(){
vector<int> v1;
vector<double> v2;
vector<string> v3;
v1.push_back(3);
v1.push_back(1);
v1.push_back(7);
v1.push_back(2);
v2.push_back(2.3);
v2.push_back(5.1);
v2.push_back(1.7);
v2.push_back(0.2);
v3.push_back("hello");
v3.push_back(",");
v3.push_back("world");
v3.push_back("!");
cout<<findMax(v1)<<endl;
cout<<findMax(v2)<<endl;
cout<<findMax(v3)<<endl;
return 0;
}
类模板
#include<iostream>
using namespace std;
template <typename Object>
class MemoryCell
{
public:
explicit MemoryCell(const Object & initialValue = Object())
:storedValue(initialValue){}
const Object & read() const
{
return storedValue;
}
void write(const Object & x)
{
storedValue = x;
}
private:
Object storedValue;
};
int main(){
MemoryCell<int> m1;
MemoryCell<string> m2("hello");
m1.write(37);
m2.write(m2.read()+"world");
cout<<m1.read()<<endl<<m2.read()<<endl;
return 0;
}