Argument Matching

Usage

match.call(definition = NULL, call = sys.call(sys.parent()),
           expand.dots = TRUE)

Arguments

definition a function, by default the function from which match.call is called.
call an unevaluated call to the function specified by definition, as generated by call.
expand.dots ???

Description

match.call returns a call in which all of the arguments are specified by their names. The most common use is to get the call of the current function, with all arguments named.

See Also

call, pmatch, match.arg, match.fun.

Examples

match.call(get, call("get", "abc", i = FALSE, p = 3))
## -> get(x = "abc", pos = 3, inherits = FALSE)
fun <- function(x, lower = 0, upper = 1) {
  structure((x - lower) / (upper - lower), CALL = match.call())
}
fun(4 * atan(1), u = pi)

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