wasSharp – Blame information for rev 20

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18 office 1 ///////////////////////////////////////////////////////////////////////////
2 // Copyright (C) Wizardry and Steamworks 2013 - License: GNU GPLv3 //
3 // Please see: http://www.gnu.org/licenses/gpl.html for legal details, //
4 // rights of fair usage, the disclaimer and warranty conditions. //
5 ///////////////////////////////////////////////////////////////////////////
6  
20 office 7 using System;
18 office 8 using System.Collections.Generic;
9 using System.Linq;
20 office 10 using wasSharp.Collections.Specialized;
18 office 11  
12 namespace wasSharp.Collections.Utilities
13 {
14 public static class CollectionExtensions
15 {
16 /// <summary>
17 /// Compares two dictionaries for equality.
18 /// </summary>
19 /// <typeparam name="TKey">key type</typeparam>
20 /// <typeparam name="TValue">value type</typeparam>
21 /// <param name="dictionary">dictionary to compare</param>
22 /// <param name="otherDictionary">dictionary to compare to</param>
23 /// <returns>true if the dictionaries contain the same elements</returns>
24 public static bool ContentEquals<TKey, TValue>(this IDictionary<TKey, TValue> dictionary,
25 IDictionary<TKey, TValue> otherDictionary)
26 {
27 return
28 (dictionary ?? new Dictionary<TKey, TValue>()).Count.Equals(
29 (otherDictionary ?? new Dictionary<TKey, TValue>()).Count) &&
30 (otherDictionary ?? new Dictionary<TKey, TValue>())
31 .OrderBy(kvp => kvp.Key)
32 .SequenceEqual((dictionary ?? new Dictionary<TKey, TValue>())
33 .OrderBy(kvp => kvp.Key));
34 }
35  
36 public static void AddOrReplace<TKey, TValue>(this IDictionary<TKey, TValue> dictionary, TKey key, TValue value)
37 {
38 switch (dictionary.ContainsKey(key))
39 {
40 case true:
41 dictionary[key] = value;
42 break;
43 default:
44 dictionary.Add(key, value);
45 break;
46 }
47 }
48  
49 public static void AddIfNotExists<TKey, TValue>(this IDictionary<TKey, TValue> dictionary, TKey key, TValue value)
50 {
51 switch (!dictionary.ContainsKey(key))
52 {
53 case true:
54 dictionary.Add(key, value);
55 break;
56 }
57 }
20 office 58  
59 public static MultiKeyDictionary<K1, K2, V> ToMultiKeyDictionary<S, K1, K2, V>(this IEnumerable<S> items, Func<S, K1> key1, Func<S, K2> key2, Func<S, V> value)
60 {
61 var dict = new MultiKeyDictionary<K1, K2, V>();
62 foreach (S i in items)
63 {
64 dict.Add(key1(i), key2(i), value(i));
65 }
66 return dict;
67 }
18 office 68 }
69 }