Structure of objects

Similar to str() but with more information for Altrep objects.

vroom_str(x)

Arguments

x	a vector

Examples

# when used on non-altrep objects altrep will always be false
vroom_str(mtcars)
#> 'data.frame': 32 obs., 11 vars.:
#> $mpg:	altrep:false	type: double	length:32
#> $cyl:	altrep:false	type: double	length:32
#> $disp:	altrep:false	type: double	length:32
#> $hp:	altrep:false	type: double	length:32
#> $drat:	altrep:false	type: double	length:32
#> $wt:	altrep:false	type: double	length:32
#> $qsec:	altrep:false	type: double	length:32
#> $vs:	altrep:false	type: double	length:32
#> $am:	altrep:false	type: double	length:32
#> $gear:	altrep:false	type: double	length:32
#> $carb:	altrep:false	type: double	length:32

mt <- vroom(vroom_example("mtcars.csv"), ",", altrep_opts = c("chr", "dbl"))
#> Observations: 32
#> Variables: 12
#> chr [ 1]: model
#> dbl [11]: mpg, cyl, disp, hp, drat, wt, qsec, vs, am, gear, carb
#> 
#> Call `spec()` for a copy-pastable column specification
#> Specify the column types with `col_types` to quiet this message
vroom_str(mt)
#> 'tbl_df', 'tbl', and 'data.frame': 32 obs., 12 vars.:
#> $model:	altrep:true	type:vroom::vroom_chr	length:32	materialized:false
#> $mpg:	altrep:true	type:vroom::vroom_dbl	length:32	materialized:false
#> $cyl:	altrep:true	type:vroom::vroom_dbl	length:32	materialized:false
#> $disp:	altrep:true	type:vroom::vroom_dbl	length:32	materialized:false
#> $hp:	altrep:true	type:vroom::vroom_dbl	length:32	materialized:false
#> $drat:	altrep:true	type:vroom::vroom_dbl	length:32	materialized:false
#> $wt:	altrep:true	type:vroom::vroom_dbl	length:32	materialized:false
#> $qsec:	altrep:true	type:vroom::vroom_dbl	length:32	materialized:false
#> $vs:	altrep:true	type:vroom::vroom_dbl	length:32	materialized:false
#> $am:	altrep:true	type:vroom::vroom_dbl	length:32	materialized:false
#> $gear:	altrep:true	type:vroom::vroom_dbl	length:32	materialized:false
#> $carb:	altrep:true	type:vroom::vroom_dbl	length:32	materialized:false