replicate
https://hackage.haskell.org/package/base-4.21.0.0/docs/Prelude.html#v:replicate
code:hs
replicate :: Int -> a ->
a
例
code:hs
>> replicate 4 True
True,True,True,True
関連
repeat関数
数を指定せずに、無限列を作る
cycle