VB.NET Tuple<T1,T2,T3,T4,T5,T6,T7>类代码示例

本文整理汇总了VB.NET中System.Tuple<T1,T2,T3,T4,T5,T6,T7>类的典型用法代码示例。如果您正苦于以下问题：VB.NET Tuple<T1,T2,T3,T4,T5,T6,T7>类的具体用法？VB.NET Tuple<T1,T2,T3,T4,T5,T6,T7>怎么用？VB.NET Tuple<T1,T2,T3,T4,T5,T6,T7>使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了Tuple<T1,T2,T3,T4,T5,T6,T7>类的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。

示例1: Example

Module Example
   Public Sub Main()
      ' Get population data for New York City, 1950-2000.
      Dim population = Tuple.Create("New York", 7891957, 7781984, 
                                    7894862, 7071639, 7322564, 8008278)
      Dim rate = ComputePopulationChange(population)      
      ' Display results.
      Console.WriteLine("Population Change, {0}, 1950-2000", population.Item1)
      Console.WriteLine()
      Console.WriteLine("Year      {0,10} {1,9}", "Population", "Annual Rate")
      Console.WriteLine("1950      {0,10:N0} {1,11}", population.Item2, "NA")
      Console.WriteLine("1960      {0,10:N0} {1,11:P2}", population.Item3, rate.Item2/10)
      Console.WriteLine("1970      {0,10:N0} {1,11:P2}", population.Item4, rate.Item3/10)
      Console.WriteLine("1980      {0,10:N0} {1,11:P2}", population.Item5, rate.Item4/10)
      Console.WriteLine("1990      {0,10:N0} {1,11:P2}", population.Item6, rate.Item5/10)
      Console.WriteLine("2000      {0,10:N0} {1,11:P2}", population.Item7, rate.Item6/10)
      Console.WriteLine("1950-2000 {0,10:N0} {1,11:P2}", "", rate.Item7/50)
   End Sub
   
      ' Compute rate of population change by decade and overall.
   Private Function ComputePopulationChange(data As Tuple(Of String, Integer, Integer, Integer, Integer, Integer, Integer)) _ 
           As Tuple(Of String, Double, Double, Double, Double, Double, Double)
      Dim rate = Tuple.Create( data.Item1, 
                       (data.Item3 - data.Item2)/data.Item2, 
                       (data.Item4 - data.Item3)/data.Item3, 
                       (data.Item5 - data.Item4)/data.Item4, 
                       (data.Item6 - data.Item5)/data.Item5,
                       (data.Item7 - data.Item6)/data.Item6,
                       (data.Item7 - data.Item2)/data.Item2 )
      Return rate
   End Function           
End Module

开发者ID:VB.NET开发者，项目名称:System，代码行数:32，代码来源:Tuple

输出：

Population Change, New York, 1950-2000

Year      Population Annual Rate
1950       7,891,957          NA
1960       7,781,984     -0.14 %
1970       7,894,862      0.15 %
1980       7,071,639     -1.04 %
1990       7,322,564      0.35 %
2000       8,008,278      0.94 %
1950-2000                 0.03 %

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