IDictionary Equals - CSharp System.Collections

CSharp examples for System.Collections:IDictionary

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Description

IDictionary Equals

Demo Code

/*/*from  w w w .  j a va2  s  .co  m*/
 *
 * 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.Linq;
using System.Collections.Generic;
using System.Collections;
using System;

public class Main{
        public static bool DictEquals<TKey>(IDictionary<TKey, object> first, IDictionary<TKey, object> second)
        {
            if (first == second) return true;
            if ((first == null) || (second == null)) return false;
            if (first.Count != second.Count) return false;

            var comparer = EqualityComparer<object>.Default;

            foreach (var kvp in first)
            {
                object secondValue;
                if (!second.TryGetValue(kvp.Key, out secondValue)) return false;
                if (!comparer.Equals(kvp.Value, secondValue)) return false;
            }
            return true;
        }
        /// <summary>
        /// Compares the entire members of one array which the other one.
        /// </summary>
        /// <param name="array1">The array to be compared.</param>
        /// <param name="array2">The array to be compared with.</param>
        /// <returns>Returns true if the two specified arrays of Objects are equal
        /// to one another. The two arrays are considered equal if both arrays
        /// contain the same number of elements, and all corresponding pairs of
        /// elements in the two arrays are equal. Two objects e1 and e2 are
        /// considered equal if (e1==null ? e2==null : e1.equals(e2)). In other
        /// words, the two arrays are equal if they contain the same elements in
        /// the same order. Also, two array references are considered equal if
        /// both are null.</returns>
        public static bool Equals(System.Array array1, System.Array array2)
        {
            bool result = false;
            if ((array1 == null) && (array2 == null))
                result = true;
            else if ((array1 != null) && (array2 != null))
            {
                if (array1.Length == array2.Length)
                {
                    int length = array1.Length;
                    result = true;
                    for (int index = 0; index < length; index++)
                    {
                        System.Object o1 = array1.GetValue(index);
                        System.Object o2 = array2.GetValue(index);
                        if (o1 == null && o2 == null)
                            continue;   // they match
                        else if (o1 == null || !o1.Equals(o2))
                        {
                            result = false;
                            break;
                        }
                    }
                }
            }
            return result;
        }
}

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