S3 method of computing the length of bandicoot_oop object

This function computes the length of the object by using the ..len..() method. If it is not applicable, error will be raised.

Usage

# S3 method for bandicoot_oop
len(x, ...)

Arguments

x

bandicoot_oop object.

...

ignored.

Value

An integer.

Examples

EMAIL <- new_class(class_name = "EMAIL")
email <- EMAIL$instantiate
register_method(EMAIL, ..init.. = function(address) self$address = address)
register_method(EMAIL, ..len.. = function() nchar(self$address))

patrick <- email('patrick@test.com')
len(patrick)
#> [1] 16