remove map in favour of summarize + across in wrangling (ch 3)?

[leem44]

@ttimbers @trevorcampbell

Many of the reviewers suggest cutting purrr's map in favour of something simpler (summarize and across was a suggestion) as mentioned here: #103)

I summarized the comments from reviewers below. I agree that add summarize and across would be helpful, but should we cut map from the wrangling chapter altogether or add it and provide both approaches?

• let me know what you think!
• I am in favour of removing it altogether but this means we would also have to remove it from the lectures + worksheets/tutorials -- so I wanted to discuss before changing anything

Reviewer E:

• In my experience, purrr seems to confuse newer users, so it may be worth striving to cut this section and using the new dplyr approaches instead.

reviewer A:

p71: purrr is very useful, but you could also use summarize + across to achieve the type of iteration you're discussing. I'm not sure which is easier, but I thought I would mention it.

Reviewer C:

Section 3.7: Does this have to be introduced now? ‘map’ is hard, and readers might have a better time with it if they’ve had more practice with R before tackling it.

[trevorcampbell]

@ttimbers @leem44 I think we have now included summarize+across in wrangling, but we're keeping map too. I like that solution. Can we close this issue?

[leem44]

Yes I think we can close this now!