删除常规数组的元素 [英] Remove element of a regular array

问题描述

我有一组 Foo 对象.如何删除数组的第二个元素?

I have an array of Foo objects. How do I remove the second element of the array?

我需要类似于 RemoveAt() 的东西，但用于常规数组.

I need something similar to RemoveAt() but for a regular array.

推荐答案

如果不想使用 List:

If you don't want to use List:

var foos = new List<Foo>(array);
foos.RemoveAt(index);
return foos.ToArray();

你可以试试这个我没有实际测试过的扩展方法:

You could try this extension method that I haven't actually tested:

public static T[] RemoveAt<T>(this T[] source, int index)
{
    T[] dest = new T[source.Length - 1];
    if( index > 0 )
        Array.Copy(source, 0, dest, 0, index);

    if( index < source.Length - 1 )
        Array.Copy(source, index + 1, dest, index, source.Length - index - 1);

    return dest;
}

然后像这样使用它:

Foo[] bar = GetFoos();
bar = bar.RemoveAt(2);

这篇关于删除常规数组的元素的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！