README.md

Evaluator

• Implementation of a take-home challenge

How to run

• Open Visual Studio and run the Evaluator project.

Description

• Lazy evaluation is an evaluation strategy that delays the evaluation of an expression until its value is needed. The challenge is for you to implement an Evaluator<T> class. Its requirements and the specification of its interface follows.

• public Evaluator<T>():

  • A parameterless constructor that can be used for initialisation.
    
  • The generic T parameter expresses the type on which the evaluator will operate and ultimately return.
    

• public void add(Func<T, T[], T> func, params T[] additionalArgs):

  • Associates a func, and additional arguments for said func with an Evaluator<T> instance. Note that func should:
    
    1. Accept an accumulated value of type T
       
    2. Accept additionalArgs via a second parameter of type T[]
       
    3. Return a result of type T
       

• public T Evaluate (T seed):

  • Invokes the Evaluator<T> instance's functions, in the order in which they were added, and returns the result. This requires an initial seed value.