Powershell create array of arrays

Question

I\'m trying to push data to a REST api using powershell.

http://influxdb.com/docs/v0.8/api/reading_and_writing_data.html

The server expects data like so:

Answer 1

Just to add my two pence worth. Its is worth noting that everytime you touch an array and you know is a single item array, you must use the appropriate comma syntax. This is not well highlighted in articles I found on the subject.

Take this example case I wrote for a Pester test case:

A lesson about single item arrays, every time you touch a single item array, you must use the comma op. It is not a case of set it and forget it:

        Mock get-AnswerAdvancedFn -ModuleName Elizium.Loopz {
          $pairs = @(, @('Author', 'Douglas Madcap Adams'));
          $first = $pairs[0];
          Write-Host "=== SINGLE-ITEM: pairs.count: $($pairs.Count), first.count: $($first.Count)"
          ([PSCustomObject]@{ Pairs = $pairs })
        }

The above won't work, because of the fault assigning $pairs to Pairs even though we've used the correct syntax setting $pairs to @(, @('Author', 'Douglas Madcap Adams'))

The following fixes this issue; everytime you touch the single item array, you must use the comma syntax, otherwise you give PowerShell another chance to flatten your array:

        Mock get-AnswerAdvancedFn -ModuleName Elizium.Loopz {
          $pairs = @(, @('Author', 'Douglas Madcap Adams'));
          $first = $pairs[0];
          Write-Host "=== SINGLE-ITEM: pairs.count: $($pairs.Count), first.count: $($first.Count)"
          ([PSCustomObject]@{ Pairs = , $pairs })
        }

My test code ended up being this:

        Mock get-AnswerAdvancedFn -ModuleName Elizium.Loopz {
          ([PSCustomObject]@{ Pairs = , @(, @('Author', 'Douglas Madcap Adams')) })
        }

Note, we had to use the comma op twice and both of those are necessary