mirror of
https://github.com/hanzoai/jube-fork.git
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richard-churchman
cc0a2bee21
Included open-source Accord.net library code natively to the solution given the deprecated state of that project. Accord.net will be supported inside Jube for own needs (such as upgrading to .Net 7+). Accord.net libraries modified to compile to .Net 6. Modified Accord.net libraries to better support Newtonsoft Json.net serialisation. Included annotations in the Accord.net libraries to house important dependency statistics. Serialised json can be used independently of Jube to recall a Neural Network. Removal of Binary Serializer totally as a precursor to the projects support of .Net 7+. Extensive bug fixing in crucial functions of Neural Network training and recall. While this part of the system remains in Alpha, it is substantially more fit for purpose.
133 lines
3.9 KiB
C#
133 lines
3.9 KiB
C#
// Accord Core Library
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// The Accord.NET Framework
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// http://accord-framework.net
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//
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// Copyright © César Souza, 2009-2017
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// cesarsouza at gmail.com
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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//
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#if NET35
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namespace Accord.Compat
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{
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading;
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/// <summary>
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/// Minimum Lazy implementation for .NET 3.5 to make
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/// Accord.NET work. This is not a complete implementation.
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/// </summary>
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///
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internal class Lazy<T>
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{
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private readonly Func<T> valueFactory;
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private readonly object lockObj = new Object();
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private bool isValueCreated;
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private T value;
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/// <summary>
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/// Initializes a new instance of the <see cref="Lazy<T>"/> class.
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/// </summary>
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///
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/// <param name="valueFactory">A function which creates the instance value on first access.</param>
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///
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public Lazy(Func<T> valueFactory)
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: this(valueFactory, true)
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{
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="Lazy<T>"/> class.
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/// </summary>
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///
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/// <param name="valueFactory">A function which creates the instance value on first access.</param>
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/// <param name="isThreadSafe">Needs to be true.</param>
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///
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public Lazy(Func<T> valueFactory, bool isThreadSafe)
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{
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if (valueFactory == null)
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throw new ArgumentNullException("valueFactory");
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if (isThreadSafe == false)
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throw new ArgumentException("This implementation only supports thread-safe instances.",
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"isThreadSafe");
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this.valueFactory = valueFactory;
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}
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/// <summary>
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/// Gets the lazily initialized value for this instance.
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/// </summary>
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///
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public T Value
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{
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get
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{
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if (!isValueCreated)
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{
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lock (lockObj)
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{
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if (!isValueCreated)
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{
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value = valueFactory();
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Thread.MemoryBarrier();
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isValueCreated = true;
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}
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}
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}
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Thread.MemoryBarrier();
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return value;
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}
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}
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/// <summary>
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/// Gets a value that indicates whether a value has been created for this Lazy{T} instance.
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/// </summary>
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///
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public bool IsValueCreated
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{
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get
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{
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lock (lockObj)
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{
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return isValueCreated;
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}
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}
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}
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/// <summary>
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/// Returns a <see cref="System.String"/> that represents this instance.
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/// </summary>
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///
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/// <returns>
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/// A <see cref="System.String"/> that represents this instance.
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/// </returns>
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///
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public override string ToString()
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{
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return Value.ToString();
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}
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}
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}
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#endif |