passing generics in a function?

[A. Burch]

Is it legal to pass a generic object as a parameter, like the following
function is trying to do Queue<int>q. Please see the URL with the entire
example and can someone tell me why this doesn't compile and how to fix it:

private static void ShowQueueContents(Queue<int> q)
{
lock (((ICollection)q).SyncRoot)
{
foreach (int item in q)
{
Console.Write("{0} ", item);
}
}
Console.WriteLine();
}

The example below for a producer/consumer doesn't compile with VS 2005
correctly.
http://msdn2.microsoft.com/en-us/library/yy12yx1f.aspx

 

[Barry Kelly]

Is it legal to pass a generic object as a parameter,

Yes, a generic type with all its type arguments filled as a parameter
type.

The example below for a producer/consumer doesn't compile with VS 2005
correctly.
http://msdn2.microsoft.com/en-us/library/yy12yx1f.aspx

The full example, at the end of the page, compiles for me just fine for
me in VS2005. Can you post the error?

-- Barry

 

[Robbe Morris [C# MVP]]

Yes, and here is a real world sample where you
might do just that.

http://www.eggheadcafe.com/articles/dotnet_generics_application_layers.asp

 

[A. Burch]

What is missing from the code for this error....
The error I got is related to the first argument in the function
Producer(Queue<int> q

public Producer(Queue<int> q, SyncEvents e)
{
_queue = q;
_syncEvents = e;
}

Error 1 The non-generic type 'System.Collections.Queue' cannot be used with
type arguments C:\MQueue\PCT\SyncEvents.cs

 

[Barry Kelly]

What is missing from the code for this error....
The error I got is related to the first argument in the function
Producer(Queue<int> q

public Producer(Queue<int> q, SyncEvents e)
{
_queue = q;
_syncEvents = e;
}

Error 1 The non-generic type 'System.Collections.Queue' cannot be used with
type arguments C:\MQueue\PCT\SyncEvents.cs

Add "using System.Collection.Generic;" to the top of your file.

-- Barry