In-place addition operator

In-place addition operator

Usage

x %+=% y

Arguments

x

Object.

y

Another object.

Value

Depends on the method.

Examples

COMPANY <- new_class(class_name = "COMPANY")
company <- COMPANY$instantiate
register_method(COMPANY,
                ..init.. = function(name, age) {
                  self$name <- name
                  self$age <- age
                })
register_method(COMPANY,
                ..iadd.. = function(y) {
                  self$name <- c(self$name, y$name)
                  self$age <- c(self$age, y$age)
                })

good_company <- company(c("patrick", "james"),
                        c(33, 34))
bad_company <- company(c("pat", "jam"),
                       c(3, 4))
good_company %+=% bad_company
good_company$name
#> [1] "patrick" "james"   "pat"     "jam"