match.call.defaults: Argument matching with defaults

In nfultz/stackoverflow: Stack Overflow's Greatest Hits

Description

This is a version of match.call which also includes default arguments.

Usage

match.call.defaults(
  definition = sys.function(sys.parent()),
  call = sys.call(sys.parent()),
  expand.dots = TRUE,
  envir = parent.frame(2L)
)

Arguments

definition	a function, by default the function from which match.call is called. See details.
call	an unevaluated call to the function specified by definition, as generated by call.
expand.dots	ogical. Should arguments matching ... in the call be included or left as a ... argument?
envir	an environment, from which the ... in call are retrieved, if any.

Value

An object of class call.

Author(s)

Neal Fultz

References

http://stackoverflow.com/questions/14397364/match-call-with-default-arguments/

Examples

foo <- function(x=NULL,y=NULL,z=4, dots=TRUE, ...) {
  match.call.defaults(expand.dots=dots)
}

foo(4,nugan='hand')
foo(dots=FALSE,who='ami')

nfultz/stackoverflow documentation built on Aug. 4, 2020, 5:31 a.m.