Function 在代表上使用扩展方法在 c# 中链接。 是否有任何性能影响。 我正在发布使用情况的代码片段

Question

Extension on Delegate. Suggestion and any improvements are welcomed. This code is being currently used in the one of the projects.

internal static class xt
{
    public static Func<From, To> Next<From, To>(this From @obj, Func<From, To> transform)
    {
        return (fr) => transform(fr);
    }

    public static Func<Tform, TForward> Next<Tform, Tto, TForward>(this Func<Tform, Tto> g, Func<Tto, TForward> f)
    {
        return (tf) => f(g(tf));
    }

    public static Tto Input<Tfrom, Tto>(this Func<Tfrom, Tto> fx, Tfrom data)
    {
        return fx(data);
    }

    public static void Execute(this Action fx)
    {
        fx();
    }

    public static Func<Tform, Tto> Next<Tform, Tto>(this Func<Tform> g, Func<Tform, Tto> f)
    {
        return tf => f(g());
    }
}

Answer 1

The only performance implications you face is the memory allocation for delegates. However, these are small and short-lived, will live in Gen0 and be collected in a quick operation.

I don't think you should be concerned about it. There are usually way more performance-threatening elements in the code you should be concerned about - string processing, array processing, etc.