using System;

var i = 123;

Lazy<int> lazyInt = new(() => i);

i = 234;

Console.WriteLine(lazyInt.Value);

i = 345;

Console.WriteLine(lazyInt.Value);

​

var obj = new { Foo = "Bar" };

Lazy<object> lazyObj = new(() => obj);

obj = new { Foo = "Baz" };

Console.WriteLine(lazyObj.Value);

obj = new { Foo = "Qux" };

Console.WriteLine(lazyObj.Value);

​

var hasValue = new HasValue { Value = "qwer" };

Lazy<HasValue> lazyHasValue = new(() => hasValue);

hasValue = new() { Value = "asdf" };

Console.WriteLine(lazyHasValue.Value);

hasValue.Value = "zxcv";

Console.WriteLine(lazyHasValue.Value);

hasValue = new() { Value = "tyui" };

Console.WriteLine(lazyHasValue.Value);

​

​

record HasValue

{

    public required string Value { get; set; }

}