All functions

ftype()

Determine function type.

is_s3_generic() is_s3_method()

Determine if a function is an S3 generic or S3 method.

otype()

Determine the type of an object

s3_class()

Compute the S3 class of an object

s3_dispatch()

Illustrate S3 dispatch

s3_get_method()

Find S3 method from its name

s3_methods_class() s3_methods_generic() s4_methods_class() s4_methods_generic()

List methods for a S3 or S4 generic (or class)