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add docs

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Isaac Van Doren 2024-11-10 18:39:29 -06:00
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commit 75ebcbe952
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19
crates/compiler/builtins/roc/List.roc
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@ -1259,6 +1259,11 @@ splitAt = \elements, userSplitIndex ->
{ before, others }
## Splits the input list on the delimiter element.
##
## ```roc
## List.splitOn [1, 2, 3] 2 == [[1], [2]]
## ```
splitOn : List a, a -> List (List a) where a implements Eq
splitOn = \elements, delimiter ->
help = \remaining, chunks, currentChunk ->
@ -1271,6 +1276,11 @@ splitOn = \elements, delimiter ->
help rest chunks (List.append currentChunk x)
help elements [] []
## Splits the input list on the delimiter list.
##
## ```roc
## List.splitOnList [1, 2, 3] [1, 2] == [[], [3]]
## ```
splitOnList : List a, List a -> List (List a) where a implements Eq
splitOnList = \elements, delimiter ->
if delimiter == [] then
@ -1280,11 +1290,10 @@ splitOnList = \elements, delimiter ->
help = \remaining, chunks, currentChunk ->
when remaining is
[] -> List.append chunks currentChunk
[x, .. as rest] ->
if List.startsWith remaining delimiter then
help (List.dropFirst remaining (List.len delimiter)) (List.append chunks currentChunk) []
else
help rest chunks (List.append currentChunk x)
_ if List.startsWith remaining delimiter ->
help (List.dropFirst remaining (List.len delimiter)) (List.append chunks currentChunk) []
[x, .. as rest] -> help rest chunks (List.append currentChunk x)
help elements [] []
## DEPRECATED: will be removed soon