Created
June 16, 2014 15:24
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Handy IEnumerator<T> extension methods
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| public static IEnumerable<T> ToIEnumerable<T>(this IEnumerator<T> enumerator) { | |
| if (enumerator != null) { | |
| while (enumerator.MoveNext()) { | |
| yield return enumerator.Current; | |
| } | |
| } | |
| } | |
| public static T[] ToArray<T>(this IEnumerator<T> enumerator) { | |
| return ToIEnumerable<T>(enumerator).ToArray(); | |
| } | |
| public static IEnumerable<T> Concat<T> (this IEnumerator<T> set1, IEnumerator<T> set2) { | |
| IEnumerable<T> s1 = set1 == null ? Enumerable.Empty<T>() : set1.ToIEnumerable(); | |
| IEnumerable<T> s2 = set2 == null ? Enumerable.Empty<T>() : set2.ToIEnumerable(); | |
| return s1.Concat(s2); | |
| } | |
| public static IEnumerable<T> Concat<T>(this IEnumerable<T> set1, IEnumerator<T> set2) { | |
| IEnumerable<T> s1 = set1 ?? Enumerable.Empty<T>(); | |
| IEnumerable<T> s2 = set2 == null ? Enumerable.Empty<T>() : set2.ToIEnumerable(); | |
| return s1.Concat(s2); | |
| } | |
| public static IEnumerable<T> Concat<T>(this IEnumerator<T> set1, IEnumerable<T> set2) { | |
| IEnumerable<T> s1 = set1 == null ? Enumerable.Empty<T>() : set1.ToIEnumerable(); | |
| IEnumerable<T> s2 = set2 ?? Enumerable.Empty<T>(); | |
| return s1.Concat(s2); | |
| } | |
| public static T FirstOrDefault<T>(this IEnumerator<T> set) { | |
| return set.ToIEnumerable().FirstOrDefault(); | |
| } |
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