为什么即使我只在一个模块中调用一个函数，我的所有函数仍在运行? [英] Why are all my functions being run even though I'm only calling one function in one module?

问题描述

我在 Test.fs 文件中有以下代码:

I have the following code in a Test.fs file:

namespace Testing

module test1 =
    let Run =
        printfn "Test1"

module test2 =
    let Run =
        printfn "Test2"

在我的 Program.fs 中，我正在呼叫:

In my Program.fs I am calling:

[<EntryPoint>]
let main argv = 
    let sw = Stopwatch.StartNew()

    printfn "%A" Testing.test1.Run

    sw.Stop()
    printfn "Problem took %d minutes, %d seconds, and %d milliseconds" sw.Elapsed.Minutes sw.Elapsed.Seconds sw.Elapsed.Milliseconds

    let s = Console.ReadLine()
    0 // return an integer exit code

此输出

Test1

Test2

为什么即使我只调用 Test1.Run ，也会输出 Test2 吗?

Why is Test2 being outputting even though I am only calling Test1.Run ?

推荐答案

test1.Run 不是函数，而是一个值.当您打开一个模块时，您将执行该模块中的所有顶级代码.在这种情况下，您要定义 test1.Run 和 test2.Run ，它们都是绑定而不是函数.

test1.Run is not a function, it is a value. When you open a module you execute all top-level code in that module. In this case you are defining test1.Run and test2.Run which are both bindings rather than functions.

我不能从您发布的内容中确切知道发生了什么，但是很明显您的主要功能没有被调用，否则 printfn％A" Testing.test1.Run 将打印< null> 和 printfn问题花费了％d分钟，％d秒和％d毫秒" sw.Elapsed.mins sw.Elapsed.Second sw.Elapsed.Milliseconds 也会打印一些东西.

I can't tell from what you posted exactly what is happening, but it's clear that your main function is not getting called, otherwise printfn "%A" Testing.test1.Run would print <null> and printfn "Problem took %d minutes, %d seconds, and %d milliseconds" sw.Elapsed.Minutes sw.Elapsed.Seconds sw.Elapsed.Milliseconds would print something as well.

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