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VB.NET Queryable.Aggregate方法代碼示例

本文整理匯總了VB.NET中System.Linq.Queryable.Aggregate方法的典型用法代碼示例。如果您正苦於以下問題:VB.NET Queryable.Aggregate方法的具體用法?VB.NET Queryable.Aggregate怎麽用?VB.NET Queryable.Aggregate使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。


在下文中一共展示了Queryable.Aggregate方法的3個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的VB.NET代碼示例。

示例1: fruits

Dim fruits() As String = {"apple", "mango", "orange", "passionfruit", "grape"}

' Determine whether any string in the array is longer than "banana".
Dim longestName As String = _
    fruits.AsQueryable().Aggregate( _
    "banana", _
    Function(ByVal longest, ByVal fruit) IIf(fruit.Length > longest.Length, fruit, longest), _
    Function(ByVal fruit) fruit.ToUpper() _
)

MsgBox(String.Format( _
    "The fruit with the longest name is {0}.", longestName) _
)
開發者ID:VB.NET開發者,項目名稱:System.Linq,代碼行數:13,代碼來源:Queryable.Aggregate

輸出:

The fruit with the longest name is PASSIONFRUIT.

示例2: ints

Dim ints() As Integer = {4, 8, 8, 3, 9, 0, 7, 8, 2}

' Count the even numbers in the array, using a seed value of 0.
Dim numEven As Integer = _
    ints.AsQueryable().Aggregate( _
        0, _
        Function(ByVal total, ByVal number) _
            IIf(number Mod 2 = 0, total + 1, total) _
    )

MsgBox(String.Format("The number of even integers is: {0}", numEven))
開發者ID:VB.NET開發者,項目名稱:System.Linq,代碼行數:11,代碼來源:Queryable.Aggregate

輸出:

The number of even integers is: 6

示例3: words

Dim sentence As String = "the quick brown fox jumps over the lazy dog"

' Split the string into individual words.
Dim words() As String = sentence.Split(" "c)

' Use Aggregate() to prepend each word to the beginning of the 
' new sentence to reverse the word order.
Dim reversed As String = _
    words.AsQueryable().Aggregate( _
        Function(ByVal workingSentence, ByVal nextWord) nextWord & " " & workingSentence _
    )

MsgBox(reversed)
開發者ID:VB.NET開發者,項目名稱:System.Linq,代碼行數:13,代碼來源:Queryable.Aggregate

輸出:

dog lazy the over jumps fox brown quick the


注:本文中的System.Linq.Queryable.Aggregate方法示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台,相關代碼片段篩選自各路編程大神貢獻的開源項目,源碼版權歸原作者所有,傳播和使用請參考對應項目的License;未經允許,請勿轉載。