as_box {rlang}

Convert object to a box

Description

• as_box() boxes its input only if it is not already a box. The class is also checked if supplied.

• as_box_if() boxes its input only if it not already a box, or if the predicate .p returns TRUE.

Usage

as_box(x, class = NULL)

as_box_if(.x, .p, .class = NULL, ...)

Arguments

x, .x

An R object.

class, .class

A box class. If the input is already a box of that class, it is returned as is. If the input needs to be boxed, class is passed to new_box().

.p

A predicate function.

...

Arguments passed to .p.