Sébastien Lorion <[EMAIL PROTECTED]> wrote:
> Funny, I get exactly the inverse behavior both in debug and release ... ?!
> class MyReferenceType
Your results appear to be anomalous because typeof(T) where T is a
non-public type invokes more security checking. I get the following
results:
Activator.Create(typeof(Public)) : 0.147 sec with 1000000 reps
Activator.Create<Public>() : 1.035 sec with 1000000 reps
Activator.Create(typeof(Private)) : 1.981 sec with 1000000 reps
Activator.Create<Private>() : 1.029 sec with 1000000 reps
... using this test program:
---8<---
using System;
using System.Diagnostics;
public class Public { public string field1; }
class Private { public string field1; }
public class App
{
delegate void Proc();
const int Repetitions = 1000000;
static void Time(string label, Proc proc)
{
Stopwatch w = Stopwatch.StartNew();
for (int i = 0; i < Repetitions; ++i)
proc();
Console.WriteLine("{0,-35}: {1,6:f3} sec with {2} reps", label,
w.ElapsedTicks / (double) Stopwatch.Frequency,
Repetitions);
}
static void Main()
{
Time("Activator.Create(typeof(Public))", delegate
{
Public item = (Public)
Activator.CreateInstance(typeof(Public));
});
Time("Activator.Create<Public>()", delegate
{
Public item = Activator.CreateInstance<Public>();
});
Time("Activator.Create(typeof(Private))", delegate
{
Private item = (Private)
Activator.CreateInstance(typeof(Private));
});
Time("Activator.Create<Private>()", delegate
{
Private item = Activator.CreateInstance<Private>();
});
}
}
--->8---
-- Barry
--
http://barrkel.blogspot.com/
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