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Re: Something in the spirit of letrec


Bill Rowe wrote:
> On 8/4/06 at 3:59 AM, mariano.suarezalvarez at gmail.com (Mariano
> Suárez-Alvarez) wrote:
>
> >I'm trying to somehow come up with a function WithSelf such that
> >evaluating
>
> >WithSelf[{a,self[1]+b,self[2]+2}]
>
> >will result in {a,a+b,a+b+c}.
>
> FoldList does this, i.e.,
>
> In[2]:=
> Rest@FoldList[Plus,0,{a,b,c}]
>
> Out[2]=
> {a,a+b,a+b+c}

I know that, but FoldList will not deal with

  {a, self[1], 1+Sin[self[1]], self[2]^self[1]}

and countless other cases ;-)

Thanks though,

-- m


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