Survey Results

template <class T> inline void clamp(T &val, const T & minval, const T & maxval)
{
   val = max(val, minval);
   val = min(val, maxval)
}

template <class T> class varResetter
{
public:
  varResetter (T &var) : m_var(var)
  {
     m_resetVal = var;
  }

  ~varResetter()
  {
     m_var = m_resetVal;
  }

private:  
  T m_resetVal;
  T& m_var;
};

int bob = 0;
printf("bob = %d \n", bob);
{
  varResetter <int>bobReset(bob);
  bob = 100;

  printf("bob = %d \n", bob);
}
printf("bob = %d \n", bob);

bob = 0
bob = 100
bob = 0

1. Automatic adaptor classes, as used in loki::Functor,
   
2. compile-time numerics,
   
3. compile-time metaprogramming,
   
4. compile-time "virtual" function call, as implemented in ATL,
   
5. metatypes (multitype variables, type lists).