CODEWITHSUNDEEP
powershellcollections
Swoogan
Swoogan

Reputation: 5558

Indexing into a PowerShell value collection

Given:

$settings = @{"Env1" = "VarValue1"; "Env2" = "VarValue2" }
Write-Output "Count: $($settings.Values.Count)"
Write-Output "Value 0: '$($settings.Values[0])'"
Write-Output "Value 1: '$($settings.Values[1])'"

I get the output:

Count: 2
Value 0 : 'VarValue2 VarValue1'
Value 1 : ''

Why does the first element have both values and the second have none? How do I get the values as a collection I can index?

Upvotes: 4

Views: 5246

Answers (3)

Mike
Mike

Reputation: 1

Based on your $settings object, you can simply use » ($settings).Values

Example:

($settings).Values | % { '• ' + $_ }

Returns:

• VarValue2
• VarValue1

Upvotes: 0

Swoogan
Swoogan

Reputation: 5558

I figured it out. The solution is to convert the Values ICollection to an array of strings.

With:

$values = $settings.Values -as [string[]]

The output becomes as originally expected:

Count: 2
Value 0 : 'VarValue2'
Value 1 : 'VarValue1'

I cannot help but feel that this should be the default behaviour.

Upvotes: 7

Noah Sparks
Noah Sparks

Reputation: 1772

You can't directly index a hashtable like that. Gotta do this 

($settings.GetEnumerator() | select -expand value)[0]

From help about_hash_tables

Hash table tables are not arrays, so you cannot use an integer as an index into the hash table, but you can use a key name to index into the hash table. If the key is a string value, enclose the key name in quotation marks.

Upvotes: 0

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