interval/static-factory-method/Interval-before.cs - A clumsy attempt with two overloaded constructors and an illegal constructor. | Lecture 4 - slide 28 : 29 Program 3 |
using System; using System.Collections; public struct Interval{ private readonly int from, to; private readonly bool empty; // Construct a non-empty interval [from - to]. public Interval(int from, int to){ this.empty = false; this.from = from; this.to = to; } // Construct an empty interval. The parameter is a dummy. public Interval(int notUsed){ this.empty = true; this.from = 0; // not really used this.to = 0; // not really used } // Illegal constructor. Compile-time error. // Structs cannot contain explicit parameterless constructors public Interval(){ this.empty = true; this.from = 0; this.to = 0; } // Other Interval operations not shown }