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using System;
using System.Collections;
using System.Collections.Generic;
using System.Threading;
namespace Pfz.Collections
{
/// <summary>
/// Enumerable collection that only holds the last value.
/// This is useful if you have many clients which different speeds to the same
/// data (like video) and you know the last data is complete (so you can skip
/// frames). The slower clients will lose many frames, while the fastest ones
/// can get all the frames.
/// This class is completely thread-safe.
/// </summary>
/// <typeparam name="T">The type of the data this "collection" holds.</typeparam>
public sealed class ActualValueCollection<T>:
IAdvancedDisposable,
IEnumerable<T>,
IFastEnumerable<T>
where
T: class
{
internal readonly object _lock = new object();
/// <summary>
/// Stops this collection and releases any enumerator waiting on it.
/// </summary>
public void Dispose()
{
lock(_lock)
{
_wasDisposed = true;
_value = null;
Monitor.PulseAll(_lock);
}
}
private bool _wasDisposed;
/// <summary>
/// Gets a value indicating if this collection was disposed.
/// </summary>
public bool WasDisposed
{
get
{
return _wasDisposed;
}
}
private T _value;
/// <summary>
/// Gets or sets the current value. When setting the value, any
/// waiting enumerators will receive it as the next value.
/// </summary>
public T Value
{
get
{
return _value;
}
set
{
if (value == null)
throw new ArgumentNullException("value");
lock(_lock)
{
if (_wasDisposed)
throw new ObjectDisposedException(GetType().FullName);
_value = value;
Monitor.PulseAll(_lock);
}
}
}
/// <summary>
/// Gets an enumerator that receives only the most up to date values.
/// </summary>
public ActualValueEnumerator<T> GetEnumerator()
{
return new ActualValueEnumerator<T>(this);
}
#region IEnumerable<T> Members
IEnumerator<T> IEnumerable<T>.GetEnumerator()
{
return GetEnumerator();
}
#endregion
#region IEnumerable Members
IEnumerator IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
#endregion
#region IFastEnumerable<T> Members
IFastEnumerator<T> IFastEnumerable<T>.GetEnumerator()
{
return GetEnumerator();
}
#endregion
}
}
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I started to program computers when I was 11 years old, as a hobbyist, programming in AMOS Basic and Blitz Basic for Amiga.
At 12 I had my first try with assembler, but it was too difficult at the time. Then, in the same year, I learned C and, after learning C, I was finally able to learn assembler (for Motorola 680x0).
Not sure, but probably between 12 and 13, I started to learn C++. I always programmed "in an object oriented way", but using function pointers instead of virtual methods.
At 15 I started to learn Pascal at school and to use Delphi. At 16 I started my first internship (using Delphi). At 18 I started to work professionally using C++ and since then I've developed my programming skills as a professional developer in C++ and C#, generally creating libraries that help other developers do their work easier, faster and with less errors.
Want more info or simply want to contact me?
Take a look at:
http://paulozemek.azurewebsites.net/
Or e-mail me at: paulozemek@outlook.com
Codeproject MVP 2012, 2015 & 2016
Microsoft MVP 2013-2014 (in October 2014 I started working at Microsoft, so I can't be a Microsoft MVP anymore).