Func() vs Func.Invoke()

2019-01-23 00:38发布

I'm curious about the differences between calling a Func directly vs using Invoke() on it. Is there a difference ? Is the first, syntactical sugar, and calls Invoke() underneath anyway ?

public T DoWork<T>(Func<T> method)
{
    return (T)method.Invoke();
}

vs

public T DoWork<T>(Func<T> method)
{
    return (T)method();
}

Or am I on the wrong track entirely :) Thanks.

标签: c# invoke Func
2条回答
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2楼-- · 2019-01-23 00:53

Invoke works well with new C# 6 null propagation operator, now u can do

T result = method?.Invoke();

instead of

T result = method != null ? method() : null;
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霸刀☆藐视天下
3楼-- · 2019-01-23 01:08

There's no difference at all. The second is just a shorthand for Invoke, provided by the compiler. They compile to the same IL.

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