[1,2,3] is actually just syntactic sugar for 1:2:3:[]. [] is an empty list. If we prepend 3 to it, it becomes [3]. If we prepend 2 to that, it becomes [2,3], and so on.
-Note: [], [[]] and[[],[],[]] are all different things. The first one is an empty list, the seconds one is a list that contains one empty list, the third one is a list that contains three empty lists.
+Note: [], [[]] and[[],[],[]] are all different things. The first one is an empty list, the second one is a list that contains one empty list, the third one is a list that contains three empty lists.
If you want to get an element out of a list by index, use !!. The indices start at 0.
ghci> "Steve Buscemi" !! 6 diff --git a/markdown/generated_html/starting-out.html b/markdown/generated_html/starting-out.html index d36a4d3..b21f75a 100644 --- a/markdown/generated_html/starting-out.html +++ b/markdown/generated_html/starting-out.html @@ -325,7 +325,7 @@An intro to lists
Note:
[],[[]]and[[],[],[]]are all different things. The first one is an -empty list, the seconds one is a list that contains one empty list, the +empty list, the second one is a list that contains one empty list, the third one is a list that contains three empty lists.If you want to get an element out of a list by index, use diff --git a/markdown/source_md/starting-out.md b/markdown/source_md/starting-out.md index 0bdc97f..2e2a957 100644 --- a/markdown/source_md/starting-out.md +++ b/markdown/source_md/starting-out.md @@ -338,7 +338,7 @@ If we prepend `2` to that, it becomes `[2,3]`, and so on. ::: {.hintbox} **Note:** `[]`, `[[]]` and`[[],[],[]]` are all different things. -The first one is an empty list, the seconds one is a list that contains one empty list, the third one is a list that contains three empty lists. +The first one is an empty list, the second one is a list that contains one empty list, the third one is a list that contains three empty lists. ::: If you want to get an element out of a list by index, use `!!`.