[racket] Is there a name for: (lambda (x) (x)) ?

It's interesting that (map apply ...) doesn't work, as this would have
been the very first thing I tried (and probably the first thing you
tried). You can pull it off with

(map apply (list thunk thunk thunk)
    (list empty empty empty))

but that's hardly any better than the "thunk-apply" you created.

Deren

On Thu, Sep 23, 2010 at 8:35 AM, Tim Brown <tim.brown at cityc.co.uk> wrote:
> Folks,
>
> Am I missing something really basic here?
>
> I have a list of thunks. I want to iterate over the results of these
> using a high-order function ... map, for-each, filter (et al).
>
> The only way I can find to do it is:
>
> (map (lambda (x) (x))
>  (list
>    (lambda () 1)
>    (lambda () 2)
>    (lambda () 3))) -> '(1 2 3)
>
> Is there a standard name for the (lambda (x) (x)) in racket?
>
> Or do I have to write my own (define (call x) (x))?
>
> Tim
>
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