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//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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// file="PartialDictionary.cs"
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// Project: StgSharp
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// AuthorGroup: Nitload Space
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// Copyright (c) Nitload Space. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the “Software”), to deal in the Software without restriction,
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// including without limitation the rights to use, copy, modify, merge,
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// publish, distribute, sublicense, and/or sell copies of the Software,
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// and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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//
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// The above copyright notice and
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// this permission notice shall be included in all copies
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// or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED “AS IS”,
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// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH
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// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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using System;
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using System.Collections;
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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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namespace StgSharp.Collections
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{
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public partial class PartialDictionary<TKey, TValue> : IDictionary<TKey, TValue>
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{
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private readonly Dictionary<TKey, TValue> _source;
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private readonly HashSet<TKey> _keys;
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private readonly PartialDictionaryValues _values;
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public PartialDictionary(
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Dictionary<TKey, TValue> source,
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TKey[] index )
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{
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_source = source;
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_keys = new HashSet<TKey>( index );
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foreach( TKey item in _keys ) {
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if( !_source.ContainsKey( item ) ) {
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_source.Add( item, default! );
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}
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}
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_values = new PartialDictionaryValues( this );
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}
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public PartialDictionary(
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Dictionary<TKey, TValue> source,
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HashSet<TKey> keys )
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{
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_source = source;
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_keys = keys;
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foreach( TKey item in _keys ) {
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if( !_source.ContainsKey( item ) ) {
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_source.Add( item, default! );
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}
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}
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_values = new PartialDictionaryValues( this );
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}
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public TValue this[ TKey key ]
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{
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get
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{
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if( _keys.Contains( key ) ) {
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return _source[ key ];
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}
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throw new KeyNotFoundException();
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}
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set
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{
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if( _keys.Contains( key ) ) {
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_source[ key ] = value;
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}
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throw new KeyNotFoundException();
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}
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}
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public ICollection<TKey> Keys => _keys;
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public ICollection<TValue> Values => _values;
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public int Count => _keys.Count;
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public bool Contains( KeyValuePair<TKey, TValue> item )
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{
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return _keys.Contains( item.Key ) && _source.Contains( item );
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}
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public bool ContainsKey( TKey key )
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{
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return _keys.Contains( key );
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}
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public void CopyTo( KeyValuePair<TKey, TValue>[] array, int arrayIndex )
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{
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throw new NotImplementedException();
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}
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public IEnumerator<KeyValuePair<TKey, TValue>> GetEnumerator()
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{
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foreach( TKey item in _keys ) {
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yield return new KeyValuePair<TKey, TValue>(item, _source[item]);
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}
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}
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public bool TryGetValue( TKey key, out TValue value )
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{
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if( _keys.Contains( key ) ) {
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value = _source[ key ];
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return true;
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}
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value = default!;
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return false;
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}
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void ICollection<KeyValuePair<TKey, TValue>>.Add(
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KeyValuePair<TKey, TValue> item )
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{
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return;
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}
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void ICollection<KeyValuePair<TKey, TValue>>.Clear()
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{
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throw new NotSupportedException();
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}
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bool ICollection<KeyValuePair<TKey, TValue>>.IsReadOnly => true;
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bool ICollection<KeyValuePair<TKey, TValue>>.Remove(
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KeyValuePair<TKey, TValue> item )
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{
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throw new NotSupportedException();
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}
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void IDictionary<TKey, TValue>.Add( TKey key, TValue value )
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{
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return;
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}
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bool IDictionary<TKey, TValue>.Remove( TKey key )
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{
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throw new NotSupportedException();
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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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}
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@@ -0,0 +1,108 @@
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//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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// file="PartialDictionaryValues.cs"
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// Project: StgSharp
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// AuthorGroup: Nitload Space
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// Copyright (c) Nitload Space. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person
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// obtaining a copy of this software and associated documentation
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// files (the “Software”), to deal in the Software without restriction,
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// including without limitation the rights to use, copy, modify, merge,
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// publish, distribute, sublicense, and/or sell copies of the Software,
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// and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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//
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// The above copyright notice and
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// this permission notice shall be included in all copies
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// or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED “AS IS”,
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// WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
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// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH
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// THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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//-----------------------------------------------------------------------
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//-----------------------------------------------------------------------
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Text;
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namespace StgSharp.Collections
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{
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public partial class PartialDictionary<TKey, TValue>
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{
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internal sealed class PartialDictionaryValues : ICollection<TValue>
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{
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private readonly PartialDictionary<TKey, TValue> _values;
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public PartialDictionaryValues(
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PartialDictionary<TKey, TValue> value )
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{
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_values = value;
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}
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public bool IsReadOnly => true;
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public int Count => _values.Count;
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void ICollection<TValue>.Add( TValue item )
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{
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return;
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}
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void ICollection<TValue>.Clear()
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{
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return;
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}
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public bool Contains( TValue item )
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{
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foreach (var kvp in _values)
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{
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if (kvp.Value != null && kvp.Value.Equals(item))
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{
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return true;
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}
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}
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return false;
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}
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public void CopyTo( TValue[] array, int arrayIndex )
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{
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foreach (var kvp in _values)
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{
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array[arrayIndex] = kvp.Value;
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arrayIndex++;
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}
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}
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public IEnumerator<TValue> GetEnumerator()
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{
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foreach (var key in _values._keys)
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{
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yield return _values._source[key];
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}
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}
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bool ICollection<TValue>.Remove( TValue item )
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{
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throw new NotSupportedException();
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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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}
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}
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