$<-
operator. This method is never called explicitly, but through an indirect
usage of the $<- operator, e.g. obj$name <- "foo".
1) This method will first search for a set() method, e.g. if
name has the value "age", a setAge() will be looked for.
If such a method exists it will be called with the Object as the first
argument and value as the second, e.g. setAge(this, value).
A get() is only looked for if .
(period). The rational for this naming convention is to be consistent
with how ls() works, which will not list such members
by default.
2) If no such method exists the value will be assigned to an
existing field named name.
3) Otherwise, the value will be assigned to a static field,
if such exists.
4) In all other case, the value is assigned to a new field.
Because any set() is called first, it is possible to
encapsulate (hide away) fields with certain names or to put
restrictions to what values can be assigned to them."$<-.Object"(this, name, value)
"[[<-.Object"(this, name, value)set() method or the name of
the field to be assigned the new value.this, as all $<- methods must do.Object.For a complete example see help(Object).Run the code above in your browser using DataCamp Workspace