Jan 19, 2021 · Jan 19, 2021 · Jan 19, 2021 · Jan 19, 2021 · Jan 19, 2021 · Jan 19, 2021
diff --git a/src/libraries/System.Linq.Queryable/src/System/Linq/Queryable.cs b/src/libraries/System.Linq.Queryable/src/System/Linq/Queryable.cs
                    ));
        }

        /// <summary>
        /// Produces a sequence of tuples with elements from the three specified sequences.
        /// </summary>
        /// <typeparam name="TFirst">The type of the elements of the first input sequence.</typeparam>
        /// <typeparam name="TSecond">The type of the elements of the second input sequence.</typeparam>
        /// <typeparam name="TThird">The type of the elements of the third input sequence.</typeparam>
        /// <param name="source1">The first sequence to merge.</param>
        /// <param name="source2">The second sequence to merge.</param>
        /// <param name="source3">The third sequence to merge.</param>
        /// <returns>A sequence of tuples with elements taken from the first, second and third sequences, in that order.</returns>
        [DynamicDependency("Zip`3", typeof(Enumerable))]
        public static IQueryable<(TFirst First, TSecond Second, TThird Third)> Zip<TFirst, TSecond, TThird>(this IQueryable<TFirst> source1, IEnumerable<TSecond> source2, IEnumerable<TThird> source3)
        {
diff --git a/src/libraries/System.Linq/src/System/Linq/Zip.cs b/src/libraries/System.Linq/src/System/Linq/Zip.cs
            return ZipIterator(first, second);
        }

        /// <summary>
        /// Produces a sequence of tuples with elements from the three specified sequences.
        /// </summary>
        /// <typeparam name="TFirst">The type of the elements of the first input sequence.</typeparam>
        /// <typeparam name="TSecond">The type of the elements of the second input sequence.</typeparam>
        /// <typeparam name="TThird">The type of the elements of the third input sequence.</typeparam>
        /// <param name="first">The first sequence to merge.</param>
        /// <param name="second">The second sequence to merge.</param>
        /// <param name="third">The third sequence to merge.</param>
        /// <returns>A sequence of tuples with elements taken from the first, second and third sequences, in that order.</returns>
        public static IEnumerable<(TFirst First, TSecond Second, TThird Third)> Zip<TFirst, TSecond, TThird>(this IEnumerable<TFirst> first, IEnumerable<TSecond> second, IEnumerable<TThird> third)
        {
            if (first is null)
Original file line number	Diff line number	Diff line change
Expand Up		@@ -666,6 +666,16 @@ public static IQueryable<TResult> Zip<TFirst, TSecond, TResult>(this IQueryable<
		));
		}

		/// <summary>
		/// Produces a sequence of tuples with elements from the three specified sequences.
		/// </summary>
		/// <typeparam name="TFirst">The type of the elements of the first input sequence.</typeparam>
		/// <typeparam name="TSecond">The type of the elements of the second input sequence.</typeparam>
		/// <typeparam name="TThird">The type of the elements of the third input sequence.</typeparam>
		/// <param name="source1">The first sequence to merge.</param>
		/// <param name="source2">The second sequence to merge.</param>
		/// <param name="source3">The third sequence to merge.</param>
		/// <returns>A sequence of tuples with elements taken from the first, second and third sequences, in that order.</returns>
		[DynamicDependency("Zip`3", typeof(Enumerable))]
		public static IQueryable<(TFirst First, TSecond Second, TThird Third)> Zip<TFirst, TSecond, TThird>(this IQueryable<TFirst> source1, IEnumerable<TSecond> source2, IEnumerable<TThird> source3)
		{
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Original file line number	Diff line number	Diff line change
Expand Up		@@ -42,6 +42,16 @@ public static IEnumerable<TResult> Zip<TFirst, TSecond, TResult>(this IEnumerabl
		return ZipIterator(first, second);
		}

		/// <summary>
		/// Produces a sequence of tuples with elements from the three specified sequences.
		/// </summary>
		/// <typeparam name="TFirst">The type of the elements of the first input sequence.</typeparam>
		/// <typeparam name="TSecond">The type of the elements of the second input sequence.</typeparam>
		/// <typeparam name="TThird">The type of the elements of the third input sequence.</typeparam>
		/// <param name="first">The first sequence to merge.</param>
		/// <param name="second">The second sequence to merge.</param>
		/// <param name="third">The third sequence to merge.</param>
		/// <returns>A sequence of tuples with elements taken from the first, second and third sequences, in that order.</returns>
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		public static IEnumerable<(TFirst First, TSecond Second, TThird Third)> Zip<TFirst, TSecond, TThird>(this IEnumerable<TFirst> first, IEnumerable<TSecond> second, IEnumerable<TThird> third)
		{
		if (first is null)
Expand Down