opencv/modules/matlab/include/opencv2/matlab/map.hpp

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C++

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////////////////////////////////////////////////////////////////////////////////
#ifndef OPENCV_MAP_HPP_
#define OPENCV_MAP_HPP_
namespace matlab {
#if __cplusplus >= 201103L
// If we have C++11 support, we just want to use unordered_map
#include <unordered_map>
template <typename KeyType, typename ValueType>
using Map = std::unordered_map<KeyType, ValueType>;
#else
// If we don't have C++11 support, we wrap another map implementation
// in the same public API as unordered_map
#include <map>
#include <stdexcept>
template <typename KeyType, typename ValueType>
class Map {
private:
std::map<KeyType, ValueType> map_;
public:
// map[key] = val;
ValueType& operator[] (const KeyType& k) {
return map_[k];
}
// map.at(key) = val (throws)
ValueType& at(const KeyType& k) {
typename std::map<KeyType, ValueType>::iterator it;
it = map_.find(k);
if (it == map_.end()) throw std::out_of_range("Key not found");
return *it;
}
// val = map.at(key) (throws, const)
const ValueType& at(const KeyType& k) const {
typename std::map<KeyType, ValueType>::const_iterator it;
it = map_.find(k);
if (it == map_.end()) throw std::out_of_range("Key not found");
return *it;
}
};
} // namespace matlab
#endif
#endif