Use a function loaded in a string

Question

Okay this is a weird one but so image my code is,

$string = "Function Get-Something {Write-host 'You got something'}"

now i want to load that function from the string into my PS memory so i can call it... so Invoke-Expression "$string" will do this but i need to use the invoke line within another function. functception..

function Validate-something {

$string = "Function Get-Something {Write-host 'You got something'}"
invoke-expression $string
}
Validate-Something
Get-something

Any ideas on how to make this work?

note: I cant write the string to a file first.

Mathias R. Jessen · Accepted Answer · 2017-06-02 08:57:26Z

1

Dot-source the defining function to have the inner function accessible in the calling scope subsequently:

. Validate-Something
Get-Something

answered Jun 2, 2017 at 8:57

Mathias R. Jessen

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Ben · Accepted Answer · 2017-06-02 09:04:06Z

1

okay, worked it out...

So I needed to set the scope of the fuctions I'm calling e.g.

function Validate-something {
$string = "Function script:Get-Something {Write-host 'You got something'}"
invoke-expression $string
}
Validate-Something
Get-something

Hope this helps anyone in the future...

answered Jun 2, 2017 at 9:04

Ben

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