Question

尝试调用函数时收到以下错误，＆＃34; columnHasStreak＆＃34;使用REPL：

错误FS0039：类型＆＃39; KeyValuePair＆＃39;未定义

我正在尝试使用REPL运行以下代码：

模块TicTacToe

open FsUnit
open NUnit.Framework
open System.Collections.Generic


[<Test>]
let ``some test to help me learn F#`` () =

    let columnHasStreak (column : list<KeyValuePair<int,bool>>) =
        column |> Seq.forall (fun cell -> cell.Value)

    let cells = [0..8]
    let connectCount = 3;
    let columns = [0..2];

    let grid = [for cell in cells -> (cell, true)] 
               |> Map.ofSeq

    let rowLocations = grid 
                       |> Seq.chunkBySize connectCount 
                       |> Seq.toList

    let columnLocations = [for i in columns -> rowLocations|> List.map (fun row -> row.[i])]

    let allColumnsHaveStreak = [for i in columns -> columnLocations.[i]] 
                               |> Seq.forall (fun column -> column |> columnHasStreak)

有人可以向我解释为什么我收到此错误吗？

Answer 1

我的VS中没有出现此错误。也许您还没有将开放的System.Collections.Generic行发送到F＃interactive window

＆＃34; KeyValuePair未定义＆＃34;在调用需要该类型作为参数的方法时

1 个答案: