Intercept concatenation for "immutable" class objects to return another "immutable" class object.

Ensures that c and append to an "immutable" class object return an immutable class object.

Usage

# S3 method for immutable
c(x, ...)

Arguments

x

An R object inheriting from the "immutable" S3-clas

...

Objects to concatenate to x.

Value

x with one or more values appended to it.