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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Linq.Expressions;
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using System.Reflection;
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namespace NzbDrone.Common
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{
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public static class EnumerableExtensions
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{
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public static IEnumerable<TKey> SelectDistinct<TOuter, TKey>(this IEnumerable<TOuter> outer, Func<TOuter, TKey> outerKeySelector)
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{
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return outer.Select(outerKeySelector).Distinct();
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}
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public static IEnumerable<TOuter> Join<TOuter, TInner, TKey, TProperty>(this IEnumerable<TOuter> outer, IEnumerable<TInner> inner, Func<TOuter, TKey> outerKeySelector, Func<TInner, TKey> innerKeySelector, Expression<Func<TOuter, TProperty>> outerProperty)
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{
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var outerList = outer.ToList();
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var innerList = inner.ToList();
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foreach (var outerElement in outerList)
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{
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var outerKey = outerKeySelector(outerElement);
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foreach (var innerElement in innerList)
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{
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var innerKey = innerKeySelector(innerElement);
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if (innerKey.Equals(outerKey))
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{
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var prop = (PropertyInfo)((MemberExpression)outerProperty.Body).Member;
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prop.SetValue(outerElement, innerElement, null);
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}
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}
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}
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return outerList;
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}
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}
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}
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