Partially specify columns of a data frame

Source: R/partial-frame.R

This special class can be passed to .ptype in order to specify the types of only some of the columns in a data frame.

partial_frame(...)

Arguments

...

Attributes of subclass

Examples

pf <- partial_frame(x = double())
pf

#> partial_frame<
#>   x: double {partial}
#> >

vec_rbind(
  data.frame(x = 1L, y = "a"),
  data.frame(x = FALSE, z = 10),
  .ptype = partial_frame(x = double(), a = character())
)

#>   x    y  z    a
#> 1 1    a NA <NA>
#> 2 0 <NA> 10 <NA>