props: Get/set multiple properties

In S7: An Object Oriented System Meant to Become a Successor to S3 and S4

Get/set multiple properties

Description

• props(x) returns all properties.

• props(x) <- list(name1 = val1, name2 = val2) modifies an existing object by setting multiple properties simultaneously.

• set_props(x, name1 = val1, name2 = val2) creates a copy of an existing object with new values for the specified properties.

Usage

props(object, names = prop_names(object))

props(object) <- value

set_props(object, ...)

Arguments

object	An object from a S7 class
names	A character vector of property names to retrieve. Default is all properties.
value	A named list of values. The object is checked for validity only after all replacements are performed.
...	Name-value pairs given property to modify and new value.

Value

A named list of property values.

Examples

Horse <- new_class("Horse", properties = list(
  name = class_character,
  colour = class_character,
  height = class_numeric
))
lexington <- Horse(colour = "bay", height = 15, name = "Lex")

props(lexington)
props(lexington) <- list(height = 14, name = "Lexington")
lexington

S7 documentation built on April 3, 2025, 10:50 p.m.