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// A Scalar that asserts for uninitialized access.
template<typename T>
class SafeScalar {
public:
SafeScalar() : initialized_(false) {}
SafeScalar(const SafeScalar& other) {
*this = other;
}
SafeScalar& operator=(const SafeScalar& other) {
val_ = T(other);
initialized_ = true;
return *this;
}
SafeScalar(T val) : val_(val), initialized_(true) {}
SafeScalar& operator=(T val) {
val_ = val;
initialized_ = true;
}
operator T() const {
VERIFY(initialized_ && "Uninitialized access.");
return val_;
}
private:
T val_;
bool initialized_;
};
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