[R] Convenience function for returning schema code

[stephhazlitt]

Describe the enhancement requested

I wonder if a convenience function for returning the schema code would be handy for users?

Currently you can extract the schema with:

library(arrow)
#> 
#> Attaching package: 'arrow'
#> The following object is masked from 'package:utils':
#> 
#>     timestamp
library(dplyr)
#> 
#> Attaching package: 'dplyr'
#> The following objects are masked from 'package:stats':
#> 
#>     filter, lag
#> The following objects are masked from 'package:base':
#> 
#>     intersect, setdiff, setequal, union

schema(arrow_table(mtcars))
#> Schema
#> mpg: double
#> cyl: double
#> disp: double
#> hp: double
#> drat: double
#> wt: double
#> qsec: double
#> vs: double
#> am: double
#> gear: double
#> carb: double
#> 
#> See $metadata for additional Schema metadata

And you can extract the schema code with:

library(arrow)
#> 
#> Attaching package: 'arrow'
#> The following object is masked from 'package:utils':
#> 
#>     timestamp
library(dplyr)
#> 
#> Attaching package: 'dplyr'
#> The following objects are masked from 'package:stats':
#> 
#>     filter, lag
#> The following objects are masked from 'package:base':
#> 
#>     intersect, setdiff, setequal, union

arrow_table(mtcars)$schema$code()
#> schema(mpg = float64(), cyl = float64(), disp = float64(), hp = float64(), 
#>     drat = float64(), wt = float64(), qsec = float64(), vs = float64(), 
#>     am = float64(), gear = float64(), carb = float64())

The schema code output is very useful for editing/altering and creating schemas, but the code is not very intuitive, especially for new users. I was thinking maybe a schema_code() convenience function might be useful (or some other better suited name).

Component(s)

R

[orgadish]

This would be great! Hopefully it would also include my request from #38033.

[thisisnic]

Closing as this has now been completed