55 lines
1.1 KiB
C#
Executable File
55 lines
1.1 KiB
C#
Executable File
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using IjwFramework.Types;
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using System.Collections;
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namespace OpenRa.Collections
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{
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public class Set<T> : IEnumerable<T>
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{
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Dictionary<T, bool> data = new Dictionary<T, bool>();
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public void Add( T obj )
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{
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data.Add( obj, false );
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if( OnAdd != null )
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OnAdd( obj );
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}
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public void Remove( T obj )
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{
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data.Remove( obj );
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if( OnRemove != null )
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OnRemove( obj );
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}
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public event Action<T> OnAdd;
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public event Action<T> OnRemove;
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public IEnumerator<T> GetEnumerator()
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{
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return data.Keys.GetEnumerator();
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}
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IEnumerator IEnumerable.GetEnumerator()
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{
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return GetEnumerator();
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}
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}
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public class CachedView<T,U> : Set<U>
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{
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public CachedView( Set<T> set, Func<T,bool> include, Func<T,U> store )
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{
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foreach( var t in set )
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if( include( t ) )
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Add( store( t ) );
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set.OnAdd += obj => { if( include( obj ) ) Add( store( obj ) ); };
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set.OnRemove += obj => { if( include( obj ) ) Remove( store( obj ) ); };
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}
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}
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}
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