我只是想知道为什么该语言的设计者决定在匿名类型上实现Equals
与值类型类似的 Equals。这不是误导吗?
public class Person
{
public string Name { get; set; }
public int Age { get; set; }
}
public static void ProofThatAnonymousTypesEqualsComparesBackingFields()
{
var personOne = new { Name = "Paweł", Age = 18 };
var personTwo = new { Name = "Paweł", Age = 18 };
Console.WriteLine(personOne == personTwo); // false
Console.WriteLine(personOne.Equals(personTwo)); // true
Console.WriteLine(Object.ReferenceEquals(personOne, personTwo)); // false
var personaOne = new Person { Name = "Paweł", Age = 11 };
var personaTwo = new Person { Name = "Paweł", Age = 11 };
Console.WriteLine(personaOne == personaTwo); // false
Console.WriteLine(personaOne.Equals(personaTwo)); // false
Console.WriteLine(Object.ReferenceEquals(personaOne, personaTwo)); // false
}
乍一看,所有打印的布尔值都应该是假的。但是当使用类型和匿名类型Equals
时,带有调用的行返回不同的值。Person