[plt-scheme] reference to undefined identifier

From: Danny Yoo (dyoo at cs.wpi.edu)
Date: Mon Aug 10 13:50:07 EDT 2009

> hi, i am new and i have a problem.i couldn't find any solution :( i am
> sure it is a basic and an easy problem..
> i saw these codes in a scheme book but they didn't work.it gives this
> problem: reference to undefined identifier: accumulate. i don't know
> what that means.what can i do to fix? i use pretty big language.

I'm assuming you're looking at the Simply Scheme textbook.  Is that right?

If so, you need to do one more thing: the Simply Scheme texbook
assumes that you're loaded some special definitions that aren't
built-in.  Those definitions are available from Brian Harvey's
website, but you may more easily grab those definitions from the
Simply Scheme package on PLaneT.  See:


for installation instructions.

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