[plt-scheme] I/O therefore no local

From: Robby Findler (robby at eecs.northwestern.edu)
Date: Mon Mar 1 07:04:38 EST 2010

The advanced student language has printf and read. The beginning
student language has the world and universe teachpacks (network
programming is a form of IO after all). Also note that you can use
local in #lang scheme. This:

  #lang scheme
  (local ((define x 1)) x)

produces 1.


On Mon, Mar 1, 2010 at 4:18 AM, wooks <wookiz at hotmail.com> wrote:
> 1. I need to introduce my students to I/O.
> 2. I need to introduce my students to local.
> 3. The teaching languages do not support I/O.
> 4. If I introduce local now I will have to switch to let when teaching
> I/O.
> Conclusion - teach let instead of local?
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