如何在 C# 中调用匿名函数? [英] How to call anonymous function in C#?

问题描述

如果可以使用 C# 编写类似于此 Javascript 的代码，我很感兴趣:

I am interested if it's possible using C# to write a code analogous to this Javascript one:

var v = (function()
{
    return "some value";
})()

我能达到的最大目标是:

The most I could achieve is:

Func<string> vf = () =>
{
    return "some value";
};

var v = vf();

但我想要这样的东西:

// Gives error CS0149: Method name expected
var v = (() =>
{
    return "some value";
})();

有什么方法可以调用函数而让它匿名吗?

Are there some way to call the function leaving it anonymous?

推荐答案

是的，但是 C# 是静态类型的，所以你需要指定一个委托类型.

Yes, but C# is statically-typed, so you need to specify a delegate type.

例如，使用构造函数语法:

For example, using the constructor syntax:

var v = new Func<string>(() =>
{
    return "some value";
})();

// shorter version
var v = new Func<string>(() => "some value")();

... 或强制转换语法，括号过多会导致混乱:)

... or the cast syntax, which can get messy with too many parentheses :)

var v = ((Func<string>) (() =>
{
    return "some value";
}))();

// shorter version
var v = ((Func<string>)(() => "some value"))();

这篇关于如何在 C# 中调用匿名函数?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！