Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Replace functionality of csv with streamly #32

Open
wants to merge 2 commits into
base: master
Choose a base branch
from
Open

Conversation

adithyaov
Copy link
Member

No description provided.

@adithyaov adithyaov linked an issue Jan 27, 2022 that may be closed by this pull request

where

parseLine ls =
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

ls is confusing as it means lines, should be xs instead.

where

parseLine ls =
Stream.toList $ Stream.splitOn (== ',') Fold.toList $ Stream.fromList ls
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

This won't work with quoted fields that include escaped commas. We had frame parsing in streamly for that use case, but not sure if we have implemented it yet.

@@ -81,6 +87,28 @@ filterSanity label old new = do
++ "\nOriginal groups: " ++ show old
++ "\nNew groups: " ++ show new

type CSV = [[String]]

-- XXX This is ugly in performance but works for the time being.
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Why would that be the case?

Copy link
Member Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I'm not truly streaming. I'm not using folds or parsers which I believe is more cleaner and the pipeline is more likely to fuse resulting in better performance.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

Successfully merging this pull request may close these issues.

Remove dependency on csv package
2 participants