2019-07-29 02:05:05 +08:00
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#Region "Microsoft.VisualBasic::923d8969616415108d9842f4375482e3, Microsoft.VisualBasic.Core\ComponentModel\SingletonHolder.vb"
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2018-08-02 20:14:48 +08:00
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' Author:
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'
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' asuka (amethyst.asuka@gcmodeller.org)
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' xie (genetics@smrucc.org)
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' xieguigang (xie.guigang@live.com)
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'
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' Copyright (c) 2018 GPL3 Licensed
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'
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'
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' GNU GENERAL PUBLIC LICENSE (GPL3)
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'
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'
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' This program is free software: you can redistribute it and/or modify
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' it under the terms of the GNU General Public License as published by
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' the Free Software Foundation, either version 3 of the License, or
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' (at your option) any later version.
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'
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' This program 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
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' GNU General Public License for more details.
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'
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' You should have received a copy of the GNU General Public License
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' along with this program. If not, see <http://www.gnu.org/licenses/>.
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' /********************************************************************************/
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' Summaries:
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' Class SingletonHolder
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' Properties: Instance
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' Constructor: (+1 Overloads) Sub New
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'
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'
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' /********************************************************************************/
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#End Region
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'!
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'@file SingletonHolder.cs
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'@author Woong Gyu La a.k.a Chris. <juhgiyo@gmail.com>
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' <http://github.com/juhgiyo/epForceDirectedGraph.cs>
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'@date September 27, 2013
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'@brief SingletonHolder Interface
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'@version 2.0
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'
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'@section LICENSE
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'
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'The MIT License (MIT)
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'
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'Copyright (c) 2013 Woong Gyu La <juhgiyo@gmail.com>
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'
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'Permission is hereby granted, free of charge, to any person obtaining a copy
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'of this software and associated documentation files (the "Software"), to deal
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'in the Software without restriction, including without limitation the rights
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'to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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'copies of the Software, and to permit persons to whom the Software is
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'furnished to do so, subject to the following conditions:
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'
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'The above copyright notice and this permission notice shall be included in
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'all copies or substantial portions of the Software.
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'
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'THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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'IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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'FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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'AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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'LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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'OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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'THE SOFTWARE.
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'
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'@section DESCRIPTION
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'
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'An Interface for the SingletonHolder Class.
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'
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'
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Imports System.Runtime.CompilerServices
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Namespace ComponentModel
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''' <summary>
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''' An Interface for the SingletonHolder Class.(存储单体模式的对象实例)
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''' </summary>
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''' <typeparam name="T">泛型T必须是含有一个无参数的构造函数的</typeparam>
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Public NotInheritable Class SingletonHolder(Of T As New)
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Shared _instance As T
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Private Sub New()
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End Sub
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''' <summary>
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''' 目标类型的唯一单个实例
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''' </summary>
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''' <returns></returns>
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Public Shared ReadOnly Property Instance() As T
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<MethodImpl(MethodImplOptions.AggressiveInlining)>
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Get
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If _instance Is Nothing Then
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_instance = New T()
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End If
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Return _instance
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End Get
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End Property
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End Class
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End Namespace
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