使用擴充套件方法使語言更具功能性

Created: November-22, 2018

擴充套件方法的一個好用途是使語言更具功能性

Sub Main()
    Dim strings = { "One", "Two", "Three" }

    strings.Join(Environment.NewLine).Print()
End Sub

<Extension>
Public Function Join(strings As IEnumerable(Of String), separator As String) As String
    Return String.Join(separator, strings)
End Function

<Extension>
Public Sub Print(text As String)
    Console.WriteLine(text)
End Sub