Wrapper class which implements special equality between CostItem instances, suitable for collecting of the statistics.
Adds estimated cost and actual measured time data point to the StatCollection for the given script.
Prints the operation timing table using collected execution profile information.
Called from evaluator immediately after the evaluator finishes recursive evaluation of the given node.
Called from evaluator immediately before the evaluator start recursive evaluation of the given node.
Returns relative error between estimated and actual values.
A simple profiler to measure average execution times of ErgoTree operations.