Get ValueFromRemainingArguments as an hashtable

Question

Using [parameter(ValueFromRemainingArguments=$true)] one can get all the remaining arguments passed to the function into a variable as a list.

How can I

Answer 1

There are a number of caveats with this method but I just wanted to show that ConvertFrom-StringData could also be considered here.

function Convert-StringToHashTable {

    param(
        [parameter(ValueFromRemainingArguments=$true)]
        [string]$string
    )

    $string -replace "(^| )-","`r`n" | ForEach-Object{$_ -replace "(\w+) (.*)",'$1=$2'} | ConvertFrom-StringData
}

Convert-StringToHashTable -var1-5 value1 -var2 "value2 or 3"

Output from above would be

Name                           Value                                                                                                                                        
----                           -----                                                                                                                                        
var2                           value2 or 3                                                                                                                                      
var1-5                         value1   

We take the all the remaining arguments as a single string. Then we split the string on - that occur at the beginning of the line or after a space. ( This accounts for dashes in the middle of works like Ansgar mentioned in another answer). Then we convert the first space after the first word into an equal sign. That will make a string of key value pairs that ConvertFrom-StringData expects.

Known Caveats

1. This will not work if you try to send arrays like in Frode's answer. He can handle those.