Does the latest version of Powershell have the ability to do something like JavaScript's:
var point = new Object();
point.x = 12;
point.y = 50;
If not, what is the equivalent or workaround?
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5 Answers
For simple ways, first, is a hashtable (available in V1)
$obj = @{}
$obj.x = 1
$obj.y = 2
Second, is a PSObject (easier in V2)
$obj = new-object psobject -property @{x = 1; y =2}
It gives you roughly the same object, but psobjects are nicer if you want to sort/group/format/export them
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The syntax is not directly supported by the functionality is there via the add-member cmdlet's. Awhile ago, I wrapped this functionality in a general purpose tuple function.
This will give you the ability to one line create these objects.
$point = New-Tuple "x",12,"y",50
Here is the code for New-Tuple
function New-Tuple()
{
param ( [object[]]$list= $(throw "Please specify the list of names and values") )
$tuple = new-object psobject
for ( $i= 0 ; $i -lt $list.Length; $i = $i+2)
{
$name = [string]($list[$i])
$value = $list[$i+1]
$tuple | add-member NoteProperty $name $value
}
return $tuple
}
Blog Post on the subject: http://blogs.msdn.com/jaredpar/archive/2007/11/29/tuples-in-powershell.aspx#comments
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Sorry, even though the selected answer is good, I couldn't resist the hacky one line answer:
New-Object PsObject | Select-Object x,y | %{$_.x = 12; $_.y = 50; $foo = $_; }
1 Comment
stej
Personally I like the multiassignment syntax: ... | %{$_.x,$_.y,$foo = 12,50,$_ }
You can do it like this:
$point = New-Object Object |
Add-Member NoteProperty x ([int] 12) -passThru |
Add-Member NoteProperty y ([int] 15) -passThru
Regarding one of your comments elsewhere, custom objects may be more useful than hash tables because they work better with cmdlets that expect objects to have named properties. For example:
$mypoints | Sort-Object y # mypoints sorted by y-value
Comments
$point = "" | Select @{Name='x'; Expression={12}} ,@{Name='y'; Expression={15}}
or more intuitively
$point = "" | Select x,y
$point.x=12; $point.y=15
