[plt-scheme] Re: λ doesn't work in HtDP languages

From: Todd O'Bryan (toddobryan at gmail.com)
Date: Thu Apr 16 18:27:26 EDT 2009

Is this as easy as adding [intermediate-lambda λ] and [advanced-lambda
λ] respectively to the

(provide (rename-out

blocks of collects/lang/htdp-intermediate.ss and htdp-advanced.ss respectively?

It seems to work and doesn't invalidate the spelled out form
("lambda"), but I may be missing something. If that's it, I've
attached a patch.


2009/4/14 Todd O'Bryan <toddobryan at gmail.com>:
> The subject says it all. We just did lambda today, and the lambda you
> insert from the menu doesn't work for Intermediate Student with lambda
> or Advanced Student. You get:
> λ: name is not defined, not a parameter, and not a primitive name
> This is with version (as well as with the
> released 4.1.4 and 4.1.5).
> Such a letdown... :-(
> Todd
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