R help - Mar 2005 - generically setting attributes of a function

Hello all:

I wonder if there is a generic way to assign the name of a function as an
attribute of the function. For example,

w = function(x) x^2;
attr(w, "name") =  "w";

This assigns the name attribute of function w to be "w".

Would it be possible to put the second line of the code inside the
function definition? I would like to avoid typing specifically the
name, "w", when assigning the attribute.

Many thanks in advance.

Fang

shang stud <facS93 <at> mors.hampshire.edu> writes:

: 
: Hello all:
: 
: I wonder if there is a generic way to assign the name of a function as an
: attribute of the function. For example,
: 
: w = function(x) x^2;
: attr(w, "name") =  "w";
: 
: This assigns the name attribute of function w to be "w".
: 
: Would it be possible to put the second line of the code inside the
: function definition? I would like to avoid typing specifically the
: name, "w", when assigning the attribute.
: 

structure(function(x) x^2, name = "w")

If you can explain what you intend to do with that attribute, perhaps
someone might be able to help better.  Short of that, would the following
work for you?
> w <- structure(function(x) x^2, name="w")
> w
function(x) x^2
attr(,"name")
[1] "w"


Andy
> From: shang stud
> 
> Hello all:
> 
> I wonder if there is a generic way to assign the name of a 
> function as an
> attribute of the function. For example,
> 
> w = function(x) x^2;
> attr(w, "name") =  "w";
> 
> This assigns the name attribute of function w to be "w".
> 
> Would it be possible to put the second line of the code inside the
> function definition? I would like to avoid typing specifically the
> name, "w", when assigning the attribute.
> 
> Many thanks in advance.
> 
> Fang
> 
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