Initialize dictionary at declaration using PowerShell

Question

Given this powershell code:

$drivers = New-Object 'System.Collections.Generic.Dictionary[String,String]' $drivers.Add("nitrous","vx") $drivers.Add("directx","vd") $drivers.Add("openGL","vo") 

Is it possible to initialize this dictionary directly without having to call the Add method. Like .NET allows you to do?

Something like this?

$foo = New-Object 'System.Collections.Generic.Dictionary[String,String]'{{"a","Alley"},{"b" "bat"}} 

[not sure what type of syntax this would involve]

Answer 1

No. The initialization syntax for Dictionary<TKey,TValue> is C# syntax candy. Powershell has its own initializer syntax support for System.Collections.HashTable (@{}):

$drivers = @{"nitrous"="vx"; "directx"="vd"; "openGL"="vo"}; 

For [probably] nearly all cases it will work just as well as Dictionary<TKey,TValue>. If you really need Dictionary<TKey,TValue> for some reason, you could make a function that takes a HashTable and iterates through the keys and values to add them to a new Dictionary<TKey,TValue>.

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The C# initializer syntax isn't exactly "direct" anyway. The compiler generates calls to Add() from it.