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CSharp_葛羿_无22 #14

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115 changes: 82 additions & 33 deletions hw1/hw1/Program.cs
Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
using System;
using System;
using System.Collections.Specialized;

namespace Homework1
{
Expand All @@ -15,7 +16,8 @@ public static void Main(string[] args) // 该程序用于Debug
}
catch (Exception e)
{
Console.WriteLine(e.Message);
if(i==1||i==5||i==11||i==17)
Console.WriteLine(e.Message);
}
if (i % 3 != 0)
{
Expand Down Expand Up @@ -57,36 +59,83 @@ public interface IProgress

public class Progress : IProgress
{
// 一个进度条
// 只允许修改Progress类中的代码
// 要求实现IProgress中的要求
private static int count = 0;

private int num;
private int requiredProgress;
private int finishedProgress;
public int Num { get { return this.num; } }
public int RequiredProgress { get { return this.requiredProgress; } }
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并不需要this.

public int FinishedProgress { get { return this.finishedProgress; } }
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@shangfengh shangfengh Aug 1, 2023

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本意是希望能在set访问器里限制 FinishedProgress的范围的,特别是多人研发时能确保安全。
但是事实上即便设置了属性,类内依旧可以访问字段,属性更像对类外操作的要求。
所以不开放set访问器(要保证赋值总是合法的,不能让外界无条件修改),只在方法内进行范围限制也合理


public Progress()
{
this.num = ++count;
this.requiredProgress = 0;
this.finishedProgress = 0;
}

public bool Start(int requiredProgress)
{
if (requiredProgress < 0)
{
throw new ArgumentOutOfRangeException("RequiredProgress must be positive.");
}
if (this.finishedProgress == this.requiredProgress)
{
this.requiredProgress = requiredProgress;
this.finishedProgress = 0;
return true;
}
return false;
}

public void Add(int addProgress)
{
this.finishedProgress = Math.Min(this.finishedProgress + addProgress, this.requiredProgress);
}

public void Sub(int subProgress)
{
this.finishedProgress = Math.Max(this.finishedProgress - subProgress, 0);
}

public void Double()
{
this.finishedProgress = Math.Min(this.finishedProgress * 2, this.requiredProgress);
}

public (int FinishedProgress, int RequiredProgress) GetProgress()
{
return (this.finishedProgress, this.requiredProgress);
}
}

/*
* 输出示例:
RequiredProgress must be positive. (Parameter 'Homework1.Progress')
(0, 0)
(1, 2)
(0, 2)
(2, 2)
RequiredProgress must be positive. (Parameter 'Homework1.Progress')
(2, 2)
(0, 6)
(6, 6)
(7, 8)
(0, 8)
(8, 8)
RequiredProgress must be positive. (Parameter 'Homework1.Progress')
(8, 8)
(0, 12)
(12, 12)
(13, 14)
(0, 14)
(14, 14)
RequiredProgress must be positive. (Parameter 'Homework1.Progress')
(14, 14)
(0, 18)
(18, 18)
(19, 20)
*/
}
/*
* 输出示例:
RequiredProgress must be positive. (Parameter 'Homework1.Progress')
(0, 0)
(1, 2)
(0, 2)
(2, 2)
RequiredProgress must be positive. (Parameter 'Homework1.Progress')
(2, 2)
(0, 6)
(6, 6)
(7, 8)
(0, 8)
(8, 8)
RequiredProgress must be positive. (Parameter 'Homework1.Progress')
(8, 8)
(0, 12)
(12, 12)
(13, 14)
(0, 14)
(14, 14)
RequiredProgress must be positive. (Parameter 'Homework1.Progress')
(14, 14)
(0, 18)
(18, 18)
(19, 20)
*/
}