Powershell Multiple Arrays (noob)

Question

So say I have 2 arrays.

$Letters = ("A","B","C")
$Numbers = ("1","2","3")

How would you construct a foreach loop such that this worked:

foreach ($letter in $letters) {set-something $number} where I could do a pair of values such that

A was set to 1, B was set to 2, C was set to 3, and so on. What is this even called? I thought it was called nested loops, but searching all over and it seems like that is NOT what this is called. Many thanks!

This is called Ziping the two lists. Not sure of the exact syntax to do it in powershell. — Scott Chamberlain
– Scott Chamberlain, Commented Nov 13, 2013 at 20:45

Keith Hill · Accepted Answer · 2013-11-13 21:28:52Z

4

If it is a Zip op then this will do the trick:

C:\PS> $Letters | Foreach {$i=0} {@($_,$Numbers[$i++]}
A
1
B
2
C
3

But I think you might want this:

C:\PS> $Letters | Foreach {$i=0;$ht=@{}} {$ht."$_"=$Numbers[$i++]}
C:\PS> $ht.A
1
C:\PS> $ht.B
2
C:\PS> $ht.C
3

edited Nov 13, 2013 at 21:28

answered Nov 13, 2013 at 20:51

Keith Hill

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3 Comments

Dominic Brunetti Over a year ago

That seems to work, however how to I capture the "Value" and use it in a command? For example say I wanted to write-host "$Letters = $Numbers"

Dominic Brunetti Over a year ago

Thank you! I'm guessing $ht stands for hash table? I'm trying to learn this language from zero scripting beyond batch/shell scripting. I've been tasked to develop build scripts for our IIS web servers pulling all the data from an external config database. :)

Keith Hill Over a year ago

Yes, $ht is just a variable name but I tend to use it for temp hashtables.

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