string - 在 F# 中将 seq 转换为 string[]

Question

例子来自this post有例子

open System.IO

let lines = 
  File.ReadAllLines("tclscript.do")
  |> Seq.map (fun line ->
      let newLine = line.Replace("{", "{{").Replace("}", "}}")
      newLine )

File.WriteAllLines("tclscript.txt", lines)

编译时报错

error FS0001: This expression was expected to have type
    string []    
but here has type
    seq<string> 

如何将 seq 转换为 string[] 以消除此错误消息？

Answer 1

基于 Jaime 的回答，由于 ReadAllLines() 返回一个数组，只需使用 Array.map 而不是 Seq.map

open System.IO

let lines = 
  File.ReadAllLines("tclscript.do")
  |> Array.map (fun line ->
      let newLine = line.Replace("{", "{{").Replace("}", "}}")
      newLine )

File.WriteAllLines("tclscript.txt", lines)