77 lines
2.3 KiB
VB.net
77 lines
2.3 KiB
VB.net
#Region "Microsoft.VisualBasic::883efcb5ab21f62333f0b4d7c2beb12c, Microsoft.VisualBasic.Core\Scripting\Expressions\Aggregate.vb"
|
|
|
|
' Author:
|
|
'
|
|
' asuka (amethyst.asuka@gcmodeller.org)
|
|
' xie (genetics@smrucc.org)
|
|
' xieguigang (xie.guigang@live.com)
|
|
'
|
|
' Copyright (c) 2018 GPL3 Licensed
|
|
'
|
|
'
|
|
' GNU GENERAL PUBLIC LICENSE (GPL3)
|
|
'
|
|
'
|
|
' This program is free software: you can redistribute it and/or modify
|
|
' it under the terms of the GNU General Public License as published by
|
|
' the Free Software Foundation, either version 3 of the License, or
|
|
' (at your option) any later version.
|
|
'
|
|
' This program is distributed in the hope that it will be useful,
|
|
' but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
' GNU General Public License for more details.
|
|
'
|
|
' You should have received a copy of the GNU General Public License
|
|
' along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
|
|
|
|
' /********************************************************************************/
|
|
|
|
' Summaries:
|
|
|
|
' Module Aggregate
|
|
'
|
|
' Function: GetAggregateFunction
|
|
'
|
|
'
|
|
' /********************************************************************************/
|
|
|
|
#End Region
|
|
|
|
Imports System.Runtime.CompilerServices
|
|
|
|
Namespace Scripting.Expressions
|
|
|
|
''' <summary>
|
|
''' Helper module for get lambda function by scripting text
|
|
''' </summary>
|
|
Public Module Aggregate
|
|
|
|
''' <summary>
|
|
''' Get ``Aggregate`` function by term.
|
|
''' </summary>
|
|
''' <param name="name$">
|
|
''' + max
|
|
''' + min
|
|
''' + average
|
|
''' </param>
|
|
''' <returns></returns>
|
|
'''
|
|
<Extension> Public Function GetAggregateFunction(name$) As Func(Of IEnumerable(Of Double), Double)
|
|
Select Case LCase(name)
|
|
Case "max"
|
|
Return Function(x) x.Max
|
|
Case "min"
|
|
Return Function(x) x.Min
|
|
Case "average", "avg", "mean"
|
|
Return Function(x) x.Average
|
|
|
|
Case Else
|
|
Throw New NotImplementedException(name)
|
|
End Select
|
|
End Function
|
|
End Module
|
|
End Namespace
|