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comparison Collections/DictionaryUtils.cs @ 28:41ddcd61dc92

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Add method to get array of keys from dictionary no-open-ticket
author IBBoard <dev@ibboard.co.uk>
date Thu, 09 Apr 2009 15:10:51 +0000
parents 0352fa33ee8f
children e38192f55d2d
comparison
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27:4ea1fc351533 28:41ddcd61dc92
33 dictionary.Values.CopyTo(col, 0); 33 dictionary.Values.CopyTo(col, 0);
34 } 34 }
35 35
36 return col; 36 return col;
37 } 37 }
38
39 /// <summary>
40 /// Takes the set of keys in a dictionary and returns them as an array of typed objects.
41 /// </summary>
42 /// <param name="dictionary">
43 /// A <see cref="IDictionary"/> to extract an array of keys from
44 /// </param>
45 /// <returns>
46 /// An array of <see cref="KEY_TYPE"/> objects taken from the Keys property of the dictionary, or NULL if the dictionary is NULL
47 /// </returns>
48 public static KEY_TYPE[] ToKeyArray<KEY_TYPE, VALUE_TYPE>(IDictionary<KEY_TYPE, VALUE_TYPE> dictionary)
49 {
50 if (dictionary == null)
51 {
52 return null;
53 }
54
55 int entryCount = dictionary.Count;
56 KEY_TYPE[] col = new KEY_TYPE[entryCount];
57
58 if (entryCount > 0)
59 {
60 dictionary.Keys.CopyTo(col, 0);
61 }
62
63 return col;
64 }
38 65
39 /// <summary> 66 /// <summary>
40 /// Takes two dictionaries and merges them. If a key exists in both dictionaries then the value in <code>firstDictionary</code> takes priority. 67 /// Takes two dictionaries and merges them. If a key exists in both dictionaries then the value in <code>firstDictionary</code> takes priority.
41 /// </summary> 68 /// </summary>
42 /// <param name="firstDictionary"> 69 /// <param name="firstDictionary">