回答編集履歴
2
修正
answer
CHANGED
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@@ -68,8 +68,7 @@
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68
68
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return false;
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69
69
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if (s1.Name == s2.Name && s1.ModifiedAt == s2.ModifiedAt)
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70
70
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return true;
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71
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-
else
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72
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-
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71
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+
return false;
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73
72
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}
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74
73
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75
74
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public int GetHashCode(SampleClass s)
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1
ついき
answer
CHANGED
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@@ -13,4 +13,73 @@
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13
13
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* sampleからprevを名前だけ見て除く→増えたものが分かる
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14
14
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* prevとsampleの名前だけ見たIntersectから、prev(sample)を名前と時刻を見て除く→時刻がかわったものが取れる
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15
15
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16
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-
という感じでどうでしょうか。
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16
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+
という感じでどうでしょうか。
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17
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+
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18
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+
---
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19
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+
```csharp
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20
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+
using System;
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21
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+
using System.Collections.Generic;
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22
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+
using System.Linq;
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23
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+
using System.IO;
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24
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+
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25
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+
namespace ConsoleApp
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26
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+
{
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27
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+
class Program
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28
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+
{
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29
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+
static void Main(string[] args)
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30
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+
{
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31
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+
var targetDir = new DirectoryInfo("./watching");
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32
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+
var fileT0 = targetDir.EnumerateFiles().Select(x=> new SampleClass() {Name = x.FullName, ModifiedAt = x.LastAccessTime }).ToArray();
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33
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+
var fileT1 = targetDir.EnumerateFiles().Select(x => new SampleClass() { Name = x.FullName, ModifiedAt = x.LastAccessTime }).ToArray();
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34
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+
var removed = fileT0.Except(fileT1).ToArray();
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35
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+
var added = fileT1.Except(fileT0).ToArray();
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36
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+
var modified = fileT0.Intersect(fileT1).Except(fileT1,new SampleClassEqualityComparer()).ToArray();
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37
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+
Console.ReadKey();
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38
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+
}
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39
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+
}
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40
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+
class SampleClass : IEquatable<SampleClass>
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|
41
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+
{
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42
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+
public string Name { get; set; } = string.Empty;
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43
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+
public DateTime ModifiedAt { get; set; } = default(DateTime);
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44
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+
|
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45
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+
public override bool Equals(object obj)
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46
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+
{
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47
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+
return Equals(obj as SampleClass);
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48
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+
}
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49
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+
|
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50
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+
public bool Equals(SampleClass other)
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51
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+
{
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52
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+
return other != null &&
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53
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+
Name == other.Name;
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54
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+
}
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55
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+
|
|
56
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+
public override int GetHashCode()
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|
57
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+
{
|
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58
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+
return 539060726 + EqualityComparer<string>.Default.GetHashCode(Name);
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59
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+
}
|
|
60
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+
}
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61
|
+
class SampleClassEqualityComparer : IEqualityComparer<SampleClass>
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62
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+
{
|
|
63
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+
public bool Equals(SampleClass s1, SampleClass s2)
|
|
64
|
+
{
|
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65
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+
if (s2 == null && s1 == null)
|
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66
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+
return true;
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67
|
+
if (s1 == null || s2 == null)
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68
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+
return false;
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69
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+
if (s1.Name == s2.Name && s1.ModifiedAt == s2.ModifiedAt)
|
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70
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+
return true;
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71
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+
else
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72
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+
return false;
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73
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+
}
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74
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+
|
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75
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+
public int GetHashCode(SampleClass s)
|
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76
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+
{
|
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77
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+
var hashCode = -22583235;
|
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78
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+
hashCode = hashCode * -1521134295 + EqualityComparer<string>.Default.GetHashCode(s.Name);
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79
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+
hashCode = hashCode * -1521134295 + s.ModifiedAt.GetHashCode();
|
|
80
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+
return hashCode;
|
|
81
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+
}
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|
82
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+
}
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|
83
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+
|
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84
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+
}
|
|
85
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+
```
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