在父范围内如何动态创建可访问的函数？ [英] How do I dynamically create functions that are accessible in a parent scope?

问题描述

这是一个例子：

function ChildF()
{
  #Creating new function dynamically
  $DynFEx =
@"
  function DynF()
  {
    "Hello DynF"
  }
"@
  Invoke-Expression $DynFEx
  #Calling in ChildF scope Works
  DynF 
}
ChildF
#Calling in parent scope doesn't. It doesn't exist here
DynF

我想知道你是否可以定义DynF一种在ChildF之外可见的方式。

I was wondering whether you could define DynF in such a way that it is "visible" outside of ChildF.

推荐答案

其他解决方案是具体问题的更好的答案。也就是说，学习创建全局变量的最通用方法是非常好的：

The other solutions are better answers to the specific question. That said, it's good to learn the most general way to create global variables:

# inner scope
Set-Variable -name DynFEx -value 'function DynF() {"Hello DynF"}' -scope global

# somewhere other scope
Invoke-Expression $dynfex
DynF

阅读帮助about_Scopes了解更多信息。

Read 'help about_Scopes' for tons more info.

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