CODEWITHSUNDEEP
powershell
user1407037
user1407037

Reputation: 1

Issue using new-variable in a loop

So, I have an interesting problem that I'm having no luck solving. I have a need to create a bunch of dynamic array variables.

code:

$temp = 'arr1=(1,2,3);arr2=(4,5,6);arr3=(7,8,9)'
foreach($item in $temp.split(";")){
    $var = $item.split("=")
    New-variable $var[0] $var[1]
    get-variable $var[0]
}

Results:

$arr1 (1,2,3)
...   (4,5,6)
...   (7,8,9)

I have variable $temp which contains a semicolon delimited list of variables/values I want to create. As you can see above I am using new-variable to create this. What is interesting is when I run this from a script, new-variable works for the first call but then I get "..." for all other variables in the array. Any idea what might be causing this?

Upvotes: 0

Views: 233

Answers (2)

user1407037
user1407037

Reputation: 1

Not sure why this was happening but when I was splitting my string I was getting some random ascii character in my array. Able to see this thanks to PowerGUI!!! The solution was to trim the string prior to using it. (i.e. $var[0].Trim() )

Upvotes: 0

Joey
Joey

Reputation: 354406

As Andy already pointed out in a comment, you're not creating a semicolon-separated list, you're creating several variables named $arr1, $arr2, etc. and $temp just refers to $arr1.

A way of fixing your code would be

$temp = 'arr1=(1,2,3);arr2=(4,5,6);...'

Note that for New-Variable you cannot prefix the $ sigil. The variable name is arr1, even if you refer to it in code as $arr1 or (gv arr1).Value or whatever.

But that's a really strange way to write code in PowerShell. You just don't really provide enough detail so that we would actually know what you're doing.

You can just as well do

$arr1 = '(1,2,3)'
$arr2 = '(4,5,6)'
...

Upvotes: 2

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