本文整理汇总了VB.NET中System.Linq.Enumerable.AsEnumerable<TSource>方法的典型用法代码示例。如果您正苦于以下问题:VB.NET Enumerable.AsEnumerable<TSource>方法的具体用法?VB.NET Enumerable.AsEnumerable<TSource>怎么用?VB.NET Enumerable.AsEnumerable<TSource>使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。
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示例1: Clump
Dim output As New System.Text.StringBuilder
' A custom class.
Class Clump(Of T)
Inherits List(Of T)
' Constructor.
Public Sub New(ByVal collection As IEnumerable(Of T))
MyBase.New(collection)
End Sub
' Custom implementation of Where().
Function Where(ByVal predicate As Func(Of T, Boolean)) As IEnumerable(Of T)
output.AppendLine("In Clump's implementation of Where().")
Return Enumerable.Where(Me, predicate)
End Function
End Class
Sub AsEnumerableEx1()
' Create a new Clump(Of T) object.
Dim fruitClump As New Clump(Of String)(New String() _
{"apple", "passionfruit", "banana",
"mango", "orange", "blueberry",
"grape", "strawberry"})
' First call to Where():
' Call Clump's Where() method with a predicate.
Dim query1 As IEnumerable(Of String) =
fruitClump.Where(Function(fruit) fruit.Contains("o"))
output.AppendLine("query1 has been created." & vbCrLf)
' Second call to Where():
' First call AsEnumerable() to hide Clump's Where() method and thereby
' force System.Linq.Enumerable's Where() method to be called.
Dim query2 As IEnumerable(Of String) =
fruitClump.AsEnumerable().Where(Function(fruit) fruit.Contains("o"))
output.AppendLine("query2 has been created.")
' Display the output.
Console.WriteLine(output.ToString())
End Sub
开发者ID:VB.NET开发者,项目名称:System.Linq,代码行数:41,代码来源:Enumerable.AsEnumerable 输出:
In Clump's implementation of Where().
query1 has been created.
query2 has been created.
注:本文中的System.Linq.Enumerable.AsEnumerable<TSource>方法示例由纯净天空整理自Github/MSDocs等源码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。 |
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