Kevin,
Sometimes you need to evaluate an expression and then use the results to do
something else.
Classicly you would probably do
$myvar = <some code that returns a value/object>
if ($mayvar -eq "<somevalue>") { do something else }
Using $() allows you to do this all in one line.
if($(<some code that returns a value/object>) -eq "<somevalue>") { do
something else }
You will see this a lot in code as people force an expression to be
evaluated, you may even see $($myvar) where $myvar is of a type that returns
an unhelpful object but placing that inside another $() actually takes you
to the value you want. I am sure smarter people can give more technical
answers.
James
"Kevin Buchan" <kevin.buchan@xxxxxx[Pls Don't Spam]sanders.com> wrote in
message news
mhoq3t1na8c4rg3gce6vgji0aoeiloqi2@xxxxxx
Quote:
>I have googled and I've used get-help. I've even tried my own tests,
> but I can't rell what the $() operator does.
>
> I've seen it in people's code and I think I can tell, from the
> context, what it does, but I'm mistaken.
>
> #Example 1:
> param(
> [string] $wsdlLocation = $(throw "Please specify a WSDL
> location"),
> )
>
> #Example 2
> $s = indent "<$($reader.Name) "
>
>
> I was feeling like I was finally nearing the crest of the learning
> curve, to where I can actually use PowerShell instead of simply
> running other people's scripts, then I run into this. :-)
>
> Thanks!
>
> --
> Kevin Buchan
> kevin.bucahn@xxxxxx[nospam]sanders.com