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Updated comments and removed redundant implementation

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Michael Becker 2014-11-14 08:13:36 -05:00
parent c1f83a6359
commit 5d8e9bc0d6
1 changed files with 17 additions and 21 deletions
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38
CSharp/Plugins/UniversalEditor.Essential/Collections/Generic/AutoDictionary.cs
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@ -6,31 +6,22 @@ using System.Text;
namespace UniversalEditor.Collections.Generic
{
/// <summary>
/// Provides a <see cref="Dictionary" /> that automatically adds or updates a key or value when it is
/// requested.
/// Provides a <see cref="T:Dictionary`2" /> that automatically adds or updates a key or value when
/// it is requested.
/// </summary>
/// <typeparam name="TKey">The type of the key part of the dictionary.</typeparam>
/// <typeparam name="TValue">The type of the value part of the dictionary.</typeparam>
public class AutoDictionary<TKey, TValue> : Dictionary<TKey, TValue>
{
public new TValue this[TKey key]
{
get { return this[key, default(TValue)]; }
set
{
if (ContainsKey(key))
{
// we already contain an item with this key, so update the value accordingly
base[key] = value;
}
else
{
// we do not already contain an item with this key, so create a new value
base.Add(key, value);
}
}
}
public TValue this[TKey key, TValue defaultValue]
/// <summary>
/// Retrieves or updates an item with the specified key. If the item does not exist on update,
/// it will be created. If the item does not exist on retrieval, the value specified for
/// <paramref name="defaultValue" /> will be returned.
/// </summary>
/// <param name="key">The key of the item to retrieve or update.</param>
/// <param name="defaultValue">The value returned on retrieval when the item with the specified key does not exist.</param>
/// <returns>The item with the specified key if it exists in this collection; otherwise, defaultValue.</returns>
public TValue this[TKey key, TValue defaultValue = default(TValue)]
{
get
{
@ -47,7 +38,12 @@ namespace UniversalEditor.Collections.Generic
return defaultValue;
}
}
set { this[key] = value; }
set
{
// the .NET Framework Dictionary`2 implementation handles the "add or update" case
// automatically if a non-existent key is specified
this[key] = value;
}
}
}
}