is_s3_generic

0th

Percentile

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

is_s3_generic compares name checks for both internal and regular generics.

is_s3_method builds names of all possible generics for that function and then checks if any of them actually is a generic.

Keywords
internal
Usage
is_s3_generic(fname, env = parent.frame())

is_s3_method(name, env = parent.frame())

Arguments
env

environment to search in.

name

name of function as a string. Need name of function because it's impossible to determine whether or not a function is a S3 method based only on its contents.

Aliases
  • is_s3_generic
  • is_s3_method
Examples
# NOT RUN {
is_s3_generic("mean")
is_s3_generic("sum")
is_s3_generic("[[")
is_s3_generic("unlist")
is_s3_generic("runif")

is_s3_method("t.data.frame")
is_s3_method("t.test") # Just tricking!
is_s3_method("as.data.frame")
is_s3_method("mean.Date")
# }
Documentation reproduced from package pryr, version 0.1.4, License: GPL-2

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