scripts
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niko
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using System;
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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namespace System.Collections.ObjectModel
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{
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/// <summary>Provides the abstract base class for a collection whose keys are embedded in the values.</summary>
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/// <typeparam name="TKey">The type of keys in the collection.</typeparam>
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/// <typeparam name="TItem">The type of items in the collection.</typeparam>
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// Token: 0x02000111 RID: 273
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[ComVisible(false)]
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[Serializable]
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public abstract class KeyedCollection<TKey, TItem> : Collection<TItem>
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{
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/// <summary>Initializes a new instance of the <see cref="T:System.Collections.ObjectModel.KeyedCollection`2" /> class that uses the default equality comparer.</summary>
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// Token: 0x06000D8B RID: 3467 RVA: 0x0003B5FC File Offset: 0x000397FC
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protected KeyedCollection()
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: this(null, 0)
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{
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}
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/// <summary>Initializes a new instance of the <see cref="T:System.Collections.ObjectModel.KeyedCollection`2" /> class that uses the specified equality comparer.</summary>
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/// <param name="comparer">The implementation of the <see cref="T:System.Collections.Generic.IEqualityComparer`1" /> generic interface to use when comparing keys, or null to use the default equality comparer for the type of the key, obtained from <see cref="P:System.Collections.Generic.EqualityComparer`1.Default" />.</param>
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// Token: 0x06000D8C RID: 3468 RVA: 0x0003B608 File Offset: 0x00039808
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protected KeyedCollection(IEqualityComparer<TKey> comparer)
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: this(comparer, 0)
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{
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}
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/// <summary>Initializes a new instance of the <see cref="T:System.Collections.ObjectModel.KeyedCollection`2" /> class that uses the specified equality comparer and creates a lookup dictionary when the specified threshold is exceeded.</summary>
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/// <param name="comparer">The implementation of the <see cref="T:System.Collections.Generic.IEqualityComparer`1" /> generic interface to use when comparing keys, or null to use the default equality comparer for the type of the key, obtained from <see cref="P:System.Collections.Generic.EqualityComparer`1.Default" />.</param>
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/// <param name="dictionaryCreationThreshold">The number of elements the collection can hold without creating a lookup dictionary (0 creates the lookup dictionary when the first item is added), or –1 to specify that a lookup dictionary is never created.</param>
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/// <exception cref="T:System.ArgumentOutOfRangeException">
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/// <paramref name="dictionaryCreationThreshold" /> is less than –1.</exception>
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// Token: 0x06000D8D RID: 3469 RVA: 0x0003B614 File Offset: 0x00039814
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protected KeyedCollection(IEqualityComparer<TKey> comparer, int dictionaryCreationThreshold)
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{
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if (comparer != null)
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{
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this.comparer = comparer;
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}
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else
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{
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this.comparer = EqualityComparer<TKey>.Default;
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}
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this.dictionaryCreationThreshold = dictionaryCreationThreshold;
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if (dictionaryCreationThreshold == 0)
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{
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this.dictionary = new Dictionary<TKey, TItem>(this.comparer);
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}
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}
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/// <summary>Determines whether the collection contains an element with the specified key.</summary>
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/// <returns>true if the <see cref="T:System.Collections.ObjectModel.KeyedCollection`2" /> contains an element with the specified key; otherwise, false.</returns>
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/// <param name="key">The key to locate in the <see cref="T:System.Collections.ObjectModel.KeyedCollection`2" />.</param>
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/// <exception cref="T:System.ArgumentNullException">
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/// <paramref name="key" /> is null.</exception>
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// Token: 0x06000D8E RID: 3470 RVA: 0x0003B664 File Offset: 0x00039864
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public bool Contains(TKey key)
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{
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if (this.dictionary != null)
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{
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return this.dictionary.ContainsKey(key);
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}
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return this.IndexOfKey(key) >= 0;
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}
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// Token: 0x06000D8F RID: 3471 RVA: 0x0003B68C File Offset: 0x0003988C
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private int IndexOfKey(TKey key)
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{
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for (int i = this.Count - 1; i >= 0; i--)
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{
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TKey keyForItem = this.GetKeyForItem(this[i]);
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if (this.comparer.Equals(key, keyForItem))
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{
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return i;
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}
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}
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return -1;
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}
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/// <summary>Removes the element with the specified key from the <see cref="T:System.Collections.ObjectModel.KeyedCollection`2" />.</summary>
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/// <returns>true if the element is successfully removed; otherwise, false. This method also returns false if <paramref name="key" /> is not found in the <see cref="T:System.Collections.ObjectModel.KeyedCollection`2" />.</returns>
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/// <param name="key">The key of the element to remove.</param>
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/// <exception cref="T:System.ArgumentNullException">
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/// <paramref name="key" /> is null.</exception>
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// Token: 0x06000D90 RID: 3472 RVA: 0x0003B6D8 File Offset: 0x000398D8
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public bool Remove(TKey key)
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{
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if (this.dictionary != null)
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{
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TItem titem;
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return this.dictionary.TryGetValue(key, out titem) && base.Remove(titem);
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}
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int num = this.IndexOfKey(key);
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if (num == -1)
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{
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return false;
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}
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this.RemoveAt(num);
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return true;
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}
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/// <summary>Gets the generic equality comparer that is used to determine equality of keys in the collection.</summary>
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/// <returns>The implementation of the <see cref="T:System.Collections.Generic.IEqualityComparer`1" /> generic interface that is used to determine equality of keys in the collection.</returns>
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// Token: 0x17000208 RID: 520
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// (get) Token: 0x06000D91 RID: 3473 RVA: 0x0003B728 File Offset: 0x00039928
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public IEqualityComparer<TKey> Comparer
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{
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get
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{
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return this.comparer;
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}
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}
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/// <summary>Gets the element with the specified key. </summary>
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/// <returns>The element with the specified key. If an element with the specified key is not found, an exception is thrown.</returns>
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/// <param name="key">The key of the element to get.</param>
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/// <exception cref="T:System.ArgumentNullException">
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/// <paramref name="key" /> is null.</exception>
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/// <exception cref="T:System.Collections.Generic.KeyNotFoundException">An element with the specified key does not exist in the collection.</exception>
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// Token: 0x17000209 RID: 521
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public TItem this[TKey key]
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{
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get
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{
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if (this.dictionary != null)
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{
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return this.dictionary[key];
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}
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int num = this.IndexOfKey(key);
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if (num >= 0)
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{
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return base[num];
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}
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throw new KeyNotFoundException();
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}
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}
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/// <summary>Changes the key associated with the specified element in the lookup dictionary.</summary>
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/// <param name="item">The element to change the key of.</param>
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/// <param name="newKey">The new key for <paramref name="item" />.</param>
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/// <exception cref="T:System.ArgumentNullException">
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/// <paramref name="item" /> is null.-or-<paramref name="key" /> is null.</exception>
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/// <exception cref="T:System.ArgumentException">
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/// <paramref name="item" /> is not found.-or-<paramref name="key" /> already exists in the <see cref="T:System.Collections.ObjectModel.KeyedCollection`2" />.</exception>
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// Token: 0x06000D93 RID: 3475 RVA: 0x0003B774 File Offset: 0x00039974
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protected void ChangeItemKey(TItem item, TKey newKey)
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{
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if (!this.Contains(item))
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{
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throw new ArgumentException();
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}
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TKey keyForItem = this.GetKeyForItem(item);
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if (this.comparer.Equals(keyForItem, newKey))
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{
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return;
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}
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if (this.Contains(newKey))
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{
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throw new ArgumentException();
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}
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if (this.dictionary != null)
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{
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if (!this.dictionary.Remove(keyForItem))
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{
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throw new ArgumentException();
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}
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this.dictionary.Add(newKey, item);
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}
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}
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/// <summary>Removes all elements from the <see cref="T:System.Collections.ObjectModel.KeyedCollection`2" />.</summary>
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// Token: 0x06000D94 RID: 3476 RVA: 0x0003B7F0 File Offset: 0x000399F0
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protected override void ClearItems()
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{
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if (this.dictionary != null)
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{
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this.dictionary.Clear();
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}
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base.ClearItems();
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}
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/// <summary>When implemented in a derived class, extracts the key from the specified element.</summary>
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/// <returns>The key for the specified element.</returns>
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/// <param name="item">The element from which to extract the key.</param>
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// Token: 0x06000D95 RID: 3477
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protected abstract TKey GetKeyForItem(TItem item);
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/// <summary>Inserts an element into the <see cref="T:System.Collections.ObjectModel.KeyedCollection`2" /> at the specified index.</summary>
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/// <param name="index">The zero-based index at which <paramref name="item" /> should be inserted.</param>
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/// <param name="item">The object to insert.</param>
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/// <exception cref="T:System.ArgumentOutOfRangeException">
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/// <paramref name="index" /> is less than 0.-or-<paramref name="index" /> is greater than <see cref="P:System.Collections.ObjectModel.Collection`1.Count" />.</exception>
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// Token: 0x06000D96 RID: 3478 RVA: 0x0003B810 File Offset: 0x00039A10
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protected override void InsertItem(int index, TItem item)
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{
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TKey keyForItem = this.GetKeyForItem(item);
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if (keyForItem == null)
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{
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throw new ArgumentNullException("GetKeyForItem(item)");
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}
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if (this.dictionary != null && this.dictionary.ContainsKey(keyForItem))
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{
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throw new ArgumentException("An element with the same key already exists in the dictionary.");
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}
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if (this.dictionary == null)
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{
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for (int i = 0; i < this.Count; i++)
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{
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if (this.comparer.Equals(keyForItem, this.GetKeyForItem(this[i])))
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{
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throw new ArgumentException("An element with the same key already exists in the dictionary.");
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}
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}
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}
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base.InsertItem(index, item);
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if (this.dictionary != null)
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{
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this.dictionary.Add(keyForItem, item);
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}
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else if (this.dictionaryCreationThreshold != -1 && this.Count > this.dictionaryCreationThreshold)
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{
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this.dictionary = new Dictionary<TKey, TItem>(this.comparer);
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for (int j = 0; j < this.Count; j++)
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{
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TItem titem = this[j];
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this.dictionary.Add(this.GetKeyForItem(titem), titem);
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}
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}
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}
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/// <summary>Removes the element at the specified index of the <see cref="T:System.Collections.ObjectModel.KeyedCollection`2" />.</summary>
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/// <param name="index">The index of the element to remove.</param>
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// Token: 0x06000D97 RID: 3479 RVA: 0x0003B934 File Offset: 0x00039B34
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protected override void RemoveItem(int index)
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{
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if (this.dictionary != null)
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{
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TKey keyForItem = this.GetKeyForItem(this[index]);
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this.dictionary.Remove(keyForItem);
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}
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base.RemoveItem(index);
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}
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/// <summary>Replaces the item at the specified index with the specified item.</summary>
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/// <param name="index">The zero-based index of the item to be replaced.</param>
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/// <param name="item">The new item.</param>
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// Token: 0x06000D98 RID: 3480 RVA: 0x0003B970 File Offset: 0x00039B70
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protected override void SetItem(int index, TItem item)
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{
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if (this.dictionary != null)
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{
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this.dictionary.Remove(this.GetKeyForItem(this[index]));
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this.dictionary.Add(this.GetKeyForItem(item), item);
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}
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base.SetItem(index, item);
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}
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/// <summary>Gets the lookup dictionary of the <see cref="T:System.Collections.ObjectModel.KeyedCollection`2" />.</summary>
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/// <returns>The lookup dictionary of the <see cref="T:System.Collections.ObjectModel.KeyedCollection`2" />, if it exists; otherwise, null.</returns>
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// Token: 0x1700020A RID: 522
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// (get) Token: 0x06000D99 RID: 3481 RVA: 0x0003B9BC File Offset: 0x00039BBC
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protected IDictionary<TKey, TItem> Dictionary
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{
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get
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{
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return this.dictionary;
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}
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}
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// Token: 0x04000389 RID: 905
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private Dictionary<TKey, TItem> dictionary;
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// Token: 0x0400038A RID: 906
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private IEqualityComparer<TKey> comparer;
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// Token: 0x0400038B RID: 907
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private int dictionaryCreationThreshold;
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}
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}
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