Last data update: 2014.03.03
|
R: Check a function has specified arguments
Check a function has specified arguments
Description
Check a function has specified arguments
Usage
has_args(f, args, exact = FALSE)
f %has_args% args
Arguments
f |
a function
|
args |
a character vector of argument names
|
exact |
if TRUE , argument names must match
args exactly (order and value); otherwise f
just must have at least args in any order
|
Examples
has_args(mean, "x")
has_args(mean, "x", exact = TRUE)
see_if(mean %has_args% "x")
see_if(mean %has_args% "y")
Results
|