Re: [Chicken-users] with-*-*-port

[Felix Winkelmann]

Joerg F. Wittenberger wrote:
> True, it is paranoid, it is the safest method and it SHOULD be overly
> paranoid, i.e., not needed:
>
> 1. The ##sys#standard-input is never changed at application level (it
>    must be hidden from that level), only chicken internal code can
>    change it.

What about

(current-input-port <PORT>)

?

It may be questionable (from a language lawyerly point of view), but
it's pretty handy...

> 2. Clean coding would never assign to ##sys#standard-input except by
>    means of with-input-from-port and friends.

Right, but the form of current-input-port above is just
a thin wrapper around the assignment.

> a) It wastes some CPU cycles and memory objecst.  Not so much of a
>    problem sometimes.

I guess we have no choice to it play safe, here.


cheers,
felix