26 lines
809 B
C#
26 lines
809 B
C#
using System.Collections.Generic;
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using System.Linq;
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namespace Swan
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{
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/// <summary>
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/// This class contains extensions methods for IEnumerable
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/// </summary>
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public static class IEnumerableExtensions
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{
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/// <summary>
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/// This method make an union of two IEnumerables
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/// validation when some of them is null.
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/// </summary>
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/// <typeparam name="T">T</typeparam>
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/// <param name="this">The this.</param>
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/// <param name="second">The second.</param>
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/// <returns> The Union </returns>
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public static IEnumerable<T> UnionNull<T>(this IEnumerable<T> @this, IEnumerable<T> second)
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{
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if (@this == null) return second;
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return second == null ? @this : @this.Union(second);
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}
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}
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}
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