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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| using System.ComponentModel; | ||
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| namespace Masuit.Tools.Systems; | ||
|
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| /// <summary> | ||
| /// 可空对象 | ||
| /// </summary> | ||
| /// <typeparam name="T"></typeparam> | ||
| public readonly struct NullObject<T> | ||
| { | ||
| [DefaultValue(true)] | ||
| private readonly bool _isnull; | ||
|
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| private NullObject(T item, bool isnull) : this() | ||
| { | ||
| _isnull = isnull; | ||
| Item = item; | ||
| } | ||
|
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| public NullObject(T item) : this(item, item == null) | ||
| { | ||
| } | ||
|
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| public static NullObject<T> Null() | ||
| { | ||
| return new NullObject<T>(); | ||
| } | ||
|
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| public T Item { get; } | ||
|
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| /// <summary> | ||
| /// 是否是null | ||
| /// </summary> | ||
| /// <returns></returns> | ||
| public bool IsNull() | ||
| { | ||
| return _isnull; | ||
| } | ||
|
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| /// <summary> | ||
| /// 隐式转换 | ||
| /// </summary> | ||
| /// <param name="nullObject"></param> | ||
| public static implicit operator T(NullObject<T> nullObject) | ||
| { | ||
| return nullObject.Item; | ||
| } | ||
|
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| /// <summary> | ||
| /// 隐式转换 | ||
| /// </summary> | ||
| /// <param name="item"></param> | ||
| public static implicit operator NullObject<T>(T item) | ||
| { | ||
| return new NullObject<T>(item); | ||
| } | ||
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| public override string ToString() | ||
| { | ||
| return (Item != null) ? Item.ToString() : "NULL"; | ||
| } | ||
|
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| public override bool Equals(object obj) | ||
| { | ||
| if (obj == null) | ||
| { | ||
| return IsNull(); | ||
| } | ||
|
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| if (obj is not NullObject<T> nullObject) | ||
| { | ||
| return false; | ||
| } | ||
|
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| if (IsNull()) | ||
| { | ||
| return nullObject.IsNull(); | ||
| } | ||
|
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| if (nullObject.IsNull()) | ||
| { | ||
| return false; | ||
| } | ||
|
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| return Item.Equals(nullObject.Item); | ||
| } | ||
|
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| public override int GetHashCode() | ||
| { | ||
| if (_isnull) | ||
| { | ||
| return 0; | ||
| } | ||
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| var result = Item.GetHashCode(); | ||
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| if (result >= 0) | ||
| { | ||
| result++; | ||
| } | ||
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| return result; | ||
| } | ||
| } |
72 changes: 72 additions & 0 deletions
72
Masuit.Tools.Abstractions/Systems/NullableConcurrentDictionary.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| using System.Collections.Concurrent; | ||
| using System.Collections.Generic; | ||
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| namespace Masuit.Tools.Systems; | ||
|
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| /// <summary> | ||
| /// 支持null-key和value的字典类型 | ||
| /// </summary> | ||
| /// <typeparam name="TKey"></typeparam> | ||
| /// <typeparam name="TValue"></typeparam> | ||
| public class NullableConcurrentDictionary<TKey, TValue> : ConcurrentDictionary<NullObject<TKey>, TValue> | ||
| { | ||
| public NullableConcurrentDictionary() : base() | ||
| { | ||
| } | ||
|
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| public NullableConcurrentDictionary(int concurrencyLevel, int capacity) : base(concurrencyLevel, capacity) | ||
| { | ||
| } | ||
|
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| public NullableConcurrentDictionary(IEqualityComparer<NullObject<TKey>> comparer) : base(comparer) | ||
| { | ||
| } | ||
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| public new TValue this[NullObject<TKey> key] | ||
| { | ||
| get => TryGetValue(key, out var value) ? value : default; | ||
| set => base[key] = value; | ||
| } | ||
|
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| /// <summary> | ||
| /// 隐式转换 | ||
| /// </summary> | ||
| /// <param name="dic"></param> | ||
| public static implicit operator NullableConcurrentDictionary<TKey, TValue>(Dictionary<TKey, TValue> dic) | ||
| { | ||
| var nullableDictionary = new NullableConcurrentDictionary<TKey, TValue>(); | ||
| foreach (var p in dic) | ||
| { | ||
| nullableDictionary[p.Key] = p.Value; | ||
| } | ||
| return nullableDictionary; | ||
| } | ||
|
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| /// <summary> | ||
| /// 隐式转换 | ||
| /// </summary> | ||
| /// <param name="dic"></param> | ||
| public static implicit operator NullableConcurrentDictionary<TKey, TValue>(ConcurrentDictionary<TKey, TValue> dic) | ||
| { | ||
| var nullableDictionary = new NullableConcurrentDictionary<TKey, TValue>(); | ||
| foreach (var p in dic) | ||
| { | ||
| nullableDictionary[p.Key] = p.Value; | ||
| } | ||
| return nullableDictionary; | ||
| } | ||
|
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| /// <summary> | ||
| /// 隐式转换 | ||
| /// </summary> | ||
| /// <param name="dic"></param> | ||
| public static implicit operator ConcurrentDictionary<TKey, TValue>(NullableConcurrentDictionary<TKey, TValue> dic) | ||
| { | ||
| var newdic = new ConcurrentDictionary<TKey, TValue>(); | ||
| foreach (var p in dic) | ||
| { | ||
| newdic[p.Key] = p.Value; | ||
| } | ||
| return newdic; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| using System.Collections.Concurrent; | ||
| using System.Collections.Generic; | ||
|
|
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| namespace Masuit.Tools.Systems; | ||
|
|
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| /// <summary> | ||
| /// 支持null-key和value的字典类型 | ||
| /// </summary> | ||
| /// <typeparam name="TKey"></typeparam> | ||
| /// <typeparam name="TValue"></typeparam> | ||
| public class NullableDictionary<TKey, TValue> : Dictionary<NullObject<TKey>, TValue> | ||
| { | ||
| public NullableDictionary() : base() | ||
| { | ||
| } | ||
|
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| public NullableDictionary(int capacity) : base(capacity) | ||
| { | ||
| } | ||
|
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| public NullableDictionary(IEqualityComparer<NullObject<TKey>>? comparer) : base(comparer) | ||
| { | ||
| } | ||
|
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| public NullableDictionary(int capacity, IEqualityComparer<NullObject<TKey>> comparer) : base(capacity, comparer) | ||
| { | ||
| } | ||
|
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| public NullableDictionary(IDictionary<NullObject<TKey>, TValue> dictionary) : base(dictionary) | ||
| { | ||
| } | ||
|
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| public NullableDictionary(IDictionary<NullObject<TKey>, TValue> dictionary, IEqualityComparer<NullObject<TKey>> comparer) : base(dictionary, comparer) | ||
| { | ||
| } | ||
|
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| public new TValue this[NullObject<TKey> key] | ||
| { | ||
| get => TryGetValue(key, out var value) ? value : default; | ||
| set => base[key] = value; | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// 隐式转换 | ||
| /// </summary> | ||
| /// <param name="dic"></param> | ||
| public static implicit operator NullableDictionary<TKey, TValue>(Dictionary<TKey, TValue> dic) | ||
| { | ||
| var nullableDictionary = new NullableDictionary<TKey, TValue>(); | ||
| foreach (var p in dic) | ||
| { | ||
| nullableDictionary[p.Key] = p.Value; | ||
| } | ||
| return nullableDictionary; | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// 隐式转换 | ||
| /// </summary> | ||
| /// <param name="dic"></param> | ||
| public static implicit operator NullableDictionary<TKey, TValue>(ConcurrentDictionary<TKey, TValue> dic) | ||
| { | ||
| var nullableDictionary = new NullableDictionary<TKey, TValue>(); | ||
| foreach (var p in dic) | ||
| { | ||
| nullableDictionary[p.Key] = p.Value; | ||
| } | ||
| return nullableDictionary; | ||
| } | ||
|
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| /// <summary> | ||
| /// 隐式转换 | ||
| /// </summary> | ||
| /// <param name="dic"></param> | ||
| public static implicit operator Dictionary<TKey, TValue>(NullableDictionary<TKey, TValue> dic) | ||
| { | ||
| var newdic = new Dictionary<TKey, TValue>(); | ||
| foreach (var p in dic) | ||
| { | ||
| newdic[p.Key] = p.Value; | ||
| } | ||
| return newdic; | ||
| } | ||
| } |
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