Similar to str() but with more information for Altrep objects.
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 = c("chr", "dbl"))
#> Rows: 32 Columns: 12
#> ── Column specification ──────────────────────────────────────────────────
#> Delimiter: ","
#> chr (1): model
#> dbl (11): mpg, cyl, disp, hp, drat, wt, qsec, vs, am, gear, carb
#>
#> ℹ Use `spec()` to retrieve the full column specification for this data.
#> ℹ Specify the column types or set `show_col_types = FALSE` to quiet this message.
vroom_str(mt)
#> 'spec_tbl_df', '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