Suppose I have a function, like list, that takes a variable number of
arguments, and I have those arguments in some vector x.  How can execute the
function with the *contents* of x as its arguments?  I.e., I don't want
list(x), but rather list(x[[1]], x[[2]], ..., x[[n]]), but I don't want to
spell out the individual elements of x (either because I want to do this
programmatically, so I cannot code an expression like
list(x[[1]],...,x[[n]]) because the value of n is not know until run time,
or else, simply to avoid the tedium of typing out all the elements of x
individually).

Thanks!

Roy

P.S. In Python, if x is some sequence-like object (e.g. a list or a tuple),
and f is some function, the expression f(*x) causes f to be called with the
*contents* of x as its arguments.  (This is to be distinguished from f(x),
which calls f with x as its sole argument.)  In Mathematica, one can achieve
a similar effect using the Apply function: Apply[f, x].  I'm looking for the
equivalent of this in R.

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