Implement unite()

[jtlandis]

Hello, great work on the dtplyr package, its a really nice addition to the tidyverse. I was wondering if there will be more methods that extend some of tidyr generics. This is more or less an extended feature request to #266.

Most people who've adapted to using dplyr have likely relied on a few tidyr functions.

I think many people would benefit from the addition of:

• nest.dtplyr_step
• unnest.dtplyr_step
• fill.dtplyr_step
• pivot_longer.dtplyr_step (to pair with the existing pivot_wider.dtplyr_step)
• separate.dtplyr_step
• unite.dtplyr_step

There already exists a package out there that attempts to address these functions named tidyfast. Only downside is that these functions would force a lazy_dt to execute its steps as I believe the first step in tidyfast functions is to coerce the object with as.data.table()

[markfairbanks]

FYI these exist for all of those functions except unite() and unnest() in the development version of dtplyr.

devtools::install_github("tidyverse/dtplyr")

[markfairbanks]

As far as unnest() - #266 is already an open request for it. However there isn't one for unite() yet, so I changed this feature request to adding that one 👍

[jtlandis]

Ahh, I see, the CRAN version is not yet updated to the dev version. Thanks for letting me know!