# [Rd] design question

**Erich Neuwirth
**
erich.neuwirth@univie.ac.at

*Sun, 18 Jun 2000 08:53:07 +0200*

let me ask you as possibly very silly question.
what would you think of a shorthand notation for anonymous fuctions in
arguments?
let me illustrate this in how mathematica does it.
mathematica has a function notation like R
Map[Function[x, x^2], {1, 2, 3}]
this can be abbreviated as
Map[#^2 &, {1, 2, 3}]
& indicates a function expression,
and # is the (one) anonymous argument.
functions with more that one arguments
(whch are positional) can be written as
#1 #2
and so on
here is an example
Outer[#1^2 + #2^2 &, {1, 2}, {3, 4}]
in some cases, this notation is quite convenient.
and since r is lexically scoped, it also should not be too dangerous.
what do our architects think about introducing this kind of notation
in r?
--
Erich Neuwirth, Computer Supported Didactics Working Group
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