R: Partially specify columns of a data frame

partial_frame {vctrs} | R Documentation

## Partially specify columns of a data frame

### Description

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

### Usage

    partial_frame(...)

### Arguments

`...` | Attributes of subclass

### Examples

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

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

[Package vctrs version 0.3.2 Index]