Heuristic<T>  constructor 
- double estimateTotalCost(
- T
 
 
Creates a heuristic from an estimateTotalCost function.
Implementation
const factory Heuristic(double Function(T) estimateTotalCost) = _Heuristic<T>;
Creates a heuristic from an estimateTotalCost function.
const factory Heuristic(double Function(T) estimateTotalCost) = _Heuristic<T>;