How can I pass-through parameters in a powershell function?

Question

I have a function that looks something like this:

function global:Test-Multi {
    Param([string]$Suite)
    & perl -S "$Suite\runall.pl" -procs:$env:NUMBER_OF_PROCESSORS
}

I would like to allow the user to specify more parameters to Test-Multi and pass them directly to the underlying legacy perl script.

Does powershell provide a mechanism to allow additional variadic behavior for this purpose?

Answer 1

After seeing your comment, option 3 sounds like exactly what you want.

---

You have a few options:

1. Use $args (credit to hjpotter92's answer )

2. Explicitly define your additional parameters, then parse them all in your function to add them to your perl call.

3. Use a single parameter with theValueFromRemainingArguments argument , eg

   function global:Test-Multi { Param( [string]$Suite, [parameter(ValueFromRemainingArguments = $true)] [string[]]$Passthrough ) & perl -S "$Suite\\runall.pl" -procs:$env:NUMBER_OF_PROCESSORS @Passthrough }

Answer 2

我不确定您希望实现什么，但是可以在函数内部可用的$args变量中访问传递给函数的$args 。

Answer 3

$args is not going to pass through arguments correctly. if you want the arguments to remain as separate arguments, you should use @args instead.