csharp/test/Apache.Arrow.Tests/Extensions/Net472Extensions.cs

// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You under the Apache License, Version 2.0
// (the "License"); you may not use this file except in compliance with
// the License.  You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

using System.Collections.Generic;

namespace Apache.Arrow.Tests
{
    internal static class Net472Extensions
    {
        public static IEnumerable<(TFirst First, TSecond Second)> Zip<TFirst, TSecond>(this IEnumerable<TFirst> first, IEnumerable<TSecond> second)
        {
            using (var enumerator1 = first.GetEnumerator())
            using (var enumerator2 = second.GetEnumerator())
            {
                while (enumerator1.MoveNext() && enumerator2.MoveNext())
                {
                    yield return (enumerator1.Current, enumerator2.Current);
                }
            }
        }
    }
}