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author | Marek Safar <marek.safar@gmail.com> | 2007-01-31 21:14:49 +0300 |
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committer | Marek Safar <marek.safar@gmail.com> | 2007-01-31 21:14:49 +0300 |
commit | 0270c901b9be2a84bae70583a6c880cbb830b131 (patch) | |
tree | 209a48f9f1659c840e7bd97b784fa2556ab9e53b /mcs/class/System.Core/System.Linq/Lookup.cs | |
parent | a92e17586d07ca91365088cb799c79fc58cf882c (diff) |
Moved from olive repository
svn path=/trunk/mcs/; revision=72042
Diffstat (limited to 'mcs/class/System.Core/System.Linq/Lookup.cs')
-rw-r--r-- | mcs/class/System.Core/System.Linq/Lookup.cs | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/mcs/class/System.Core/System.Linq/Lookup.cs b/mcs/class/System.Core/System.Linq/Lookup.cs new file mode 100644 index 00000000000..31f09c54cc2 --- /dev/null +++ b/mcs/class/System.Core/System.Linq/Lookup.cs @@ -0,0 +1,64 @@ +// Permission is hereby granted, free of charge, to any person obtaining +// a copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to +// permit persons to whom the Software is furnished to do so, subject to +// the following conditions: +// +// The above copyright notice and this permission notice shall be +// included in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +// +// Authors: +// Alejandro Serrano "Serras" (trupill@yahoo.es) +// + +using System; +using System.Collections; +using System.Collections.Generic; + +namespace System.Linq +{ + public class Lookup<TKey, TElement> : IEnumerable<IGrouping<TKey, TElement>> + { + Dictionary<TKey, IGrouping<TKey, TElement>> groups; + + internal Lookup (Dictionary<TKey, List<TElement>> groups) + { + this.groups = new Dictionary<TKey, IGrouping<TKey, TElement>> (); + foreach (KeyValuePair<TKey, List<TElement>> group in groups) + this.groups.Add (group.Key, new Grouping<TKey, TElement>(group.Key, group.Value)); + } + + public int Count { + get { return groups.Count; } + } + + public bool Contains (TKey key) + { + return groups.ContainsKey (key); + } + + public IEnumerable<TElement> this [TKey key] + { + get { return groups[key]; } + } + + public IEnumerator<IGrouping<TKey, TElement>> GetEnumerator () + { + return groups.Values.GetEnumerator (); + } + + IEnumerator IEnumerable.GetEnumerator () + { + return groups.Values.GetEnumerator (); + } + } +} |