In order to solve your bank example, it is merely sufficient to do
*`+/ 1.03 300 1.025 200 1.02 100
627.837
But do you need the "toggle" verb for a more general problem?
Mike
On 15/09/2010 14:54, Markus Schmidt-Gröttrup wrote:
> Is their a better way to create a verb that toggles as defined here?
>
> toggle =: 4 : 0
> t =: -. t
> )
> t =: 0 NB. initialisation
>
> Consider the calculation that might occur in a bank, where growing
> deposits yield a growing interest rate:
>
> 1.03*300+1.025*200+1.02*100
>
> To evaluate it the toggle verb allows to write:
>
> (+`* @. toggle)/ 1.03 300 1.025 200 1.02 100
>
> I dislike the global variable (t), certainly there are better ways to do
> the calculation.
>
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