c# - 如何在 C# 中比较两个字典元组值

Question

我有两个字典，一个键和一个值作为元组(两个值)。我想执行以下操作:

• 根据关键字比较两个字典。如果键匹配，则应该比较它们的元组。
• 如果两个字典包含不同的键，即不匹配的键，它应该给出一个错误。

它可以是 linq 表达式，也可以是简单的循环和检查。

Dictionary<string, Tuple<string, string>> dict1= new Dictionary<string, Tuple<string, string>>();
Dictionary<string, Tuple<string, string>> dict2= new Dictionary<string, Tuple<string, string>>();

Answer 1

你可以这样做:

using System.Linq;
using System.Collections.Generic;

public static class DictionaryExtensions {
    public static bool IsEqualTo(this Dictionary<string, Tuple<string, string>> dict1, Dictionary<string, Tuple<string, string>> dict2) {
        if (!Enumerable.SequenceEqual(dict1.Keys.OrderBy(x => x), dict2.Keys.OrderBy(x => x))) {
            return false;
        }
            
        foreach(var kvp in dict1) {
            var corresponding = dict2[kvp.Key];
            
            if (kvp.Value.Item1 != corresponding.Item1 || kvp.Value.Item2 != corresponding.Item2) {
                return false;
            }
        }
            
        return true;
    }
}

然后使用它:

        Dictionary<string, Tuple<string, string>> dict1= new Dictionary<string, Tuple<string, string>>();
        Dictionary<string, Tuple<string, string>> dict2= new Dictionary<string, Tuple<string, string>>();
        
        Console.WriteLine(dict1.IsEqualTo(dict2)); // True
        
        dict1["a"] = new Tuple<string, string>("a", "b");
        dict2["a"] = new Tuple<string, string>("a", "b");
        
        Console.WriteLine(dict1.IsEqualTo(dict2)); // True
        
        dict2["a"] = new Tuple<string, string>("a", "b2");
        
        Console.WriteLine(dict1.IsEqualTo(dict2)); // False

        dict2["a"] = new Tuple<string, string>("a", "b");
        dict2["b"] = new Tuple<string, string>("a", "b2");

        Console.WriteLine(dict1.IsEqualTo(dict2)); // False

更新 感谢 Aluan Haddad 指出排序问题。