StructuralComparisons.cs

namespace System.Collections
{
    [__DynamicallyInvokable]
    public static class StructuralComparisons
    {
        private static volatile IComparer s_StructuralComparer;

        private static volatile IEqualityComparer s_StructuralEqualityComparer;

        [__DynamicallyInvokable]
        public static IComparer StructuralComparer
        {
            [__DynamicallyInvokable]
            get
            {
                IComparer comparer = s_StructuralComparer;
                if (comparer == null)
                {
                    comparer = (s_StructuralComparer = new StructuralComparer());
                }
                return comparer;
            }
        }

        [__DynamicallyInvokable]
        public static IEqualityComparer StructuralEqualityComparer
        {
            [__DynamicallyInvokable]
            get
            {
                IEqualityComparer equalityComparer = s_StructuralEqualityComparer;
                if (equalityComparer == null)
                {
                    equalityComparer = (s_StructuralEqualityComparer = new StructuralEqualityComparer());
                }
                return equalityComparer;
            }
        }
    }
}