Create Property from a Union of Properties

An analogue to S7::new_union(). Defines a new property from multiple

Usage

property_union(..., default = NULL)

# S3 method for class 'S7_property'
e1 | e2

Arguments

...

S7 classes or properties to union.

default

Any. Passed to S7::new_property().

e1, e2

S7 classes or properties to union.

Value

An S7 property typed as the union of ....

Examples

library(S7)
Piece := new_class(
  properties = list(id = property_union(S7::class_character, S7::class_integer))
)
Piece("a")
#> <Piece>
#>  @ id: chr "a"
Piece(1L)
#> <Piece>
#>  @ id: int 1
library(S7)
Piece := new_class(
  properties = list(id = class_string | property_range_discrete(1L, 6L))
)
Piece(3L)
#> <Piece>
#>  @ id: int 3