缓存的属性：更简单的方法？ [英] Cached Property: Easier way?

问题描述

我有一个对象，其属性的计算成本很高，因此只能在首次访问时进行计算，然后才进行缓存。

I have a object with properties that are expensive to compute, so they are only calculated on first access and then cached.

 private List<Note> notes;
 public List<Note> Notes
    {
        get
        {
            if (this.notes == null)
            {
                this.notes = CalcNotes();
            }
            return this.notes;
        }
    }

我想知道，还有更好的方法吗？

I wonder, is there a better way to do this? Is it somehow possible to create a Cached Property or something like that in C#?

推荐答案

就语法而言，您可以使用 null-coalescing 运算符，如果您想花哨的话，但不是

As far as syntax goes, you can use the null-coalescing operator if you want to be fancy, but it's not necessarily as readable.

get
{
    return notes ?? (notes = CalcNotes());
}

编辑：更新由Matthew提供。另外，我认为其他答案对于提问者更有用！

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