如何在Haskell中创建数字列表

问题描述

我需要创建一个函数来制作一块行和列大小的板，然后用零填充它.mkBoard 2 3将使[[0,0,0]，[0,0,0]]

I need to create a function that makes a board of size row and column and then populate that with zeros. mkBoard 2 3 would make[[0,0,0],[0,0,0]]

我真的不知道从哪里开始，因为我是Haskell编程的新手，我当时认为该函数应该是这样的:

I don't really know where to start as I am new to Haskell programming I was thinking that the function would be something like this:

:

mkBoard = genericMkBoard 0
  UPD :您也可以使它与replicate更加一致(感谢@chepner):
UPD: Also you can make it like this to be more consistent with replicate (thanks to @chepner):
replicate2D m n x = replicate m (replicate n x)

mkBoard m n = replicate2D m n 0
                        
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