R: 'list_of' attributes

list-of-attributes {vctrs}

R Documentation

`list_of` attributes

Description

list_of_ptype() returns the ptype required by the list_of. If no ptype is required, then NULL is returned.
list_of_size() returns the size required by the list_of. If no size is required, then NULL is returned.

Usage

list_of_ptype(x)

list_of_size(x)

Arguments

x

Examples

x <- list_of(1, 2)
list_of_ptype(x)
list_of_size(x)

x <- list_of(.ptype = integer(), .size = 5)
list_of_ptype(x)
list_of_size(x)

[Package vctrs version 0.7.3 Index]