On 30/08/12 10:36, Peter Langfelder wrote:
Hi all,
is there a way to extract the name of a function, i.e. do the reverse
of match.fun applied to a character string? I would like to print out
the name of a function supplied to another function as an argument.
For example:
myFunc = function(x) { x+1 }
applyFunc = function(fnc, x)
{
fnc = match.fun(fnc)
fnc(x)
}
Is there a way to obtain "myFunc" from the argument fnc in applyFnc
the following call is issued?
applyFnc(myFunc, 1)
You can just do:
applyFunc = function(fnc, x)
{
fnc(x)
}
You don't need to get the function's name.
That being said, you seem basically to be re-inventing do.call() in a
rather kludgy
way. I would advise you to think carefully through what you are trying
to accomplish.
cheers,
Rolf Turner
P. S. If you really want to get the *name* of the argument "fnc", you
can use
good old deparse(substitute(...)). As in:
fname <- deparse(substitute(fnc))
But as I said, you don't need to do this for what seems to be your purpose,
and so it's all rather off the point.
R. T.
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