[plt-scheme] hash tables

From: John Clements (clements at brinckerhoff.org)
Date: Tue Jul 15 16:40:37 EDT 2008

On Jul 15, 2008, at 1:35 PM, Ivanyi Peter wrote:

> Hi again,
> Sorry to trouble, but how can I use the make-hash function in
> PLT-Scheme v. 402.
> I have tried all sorts of language settings, but it always says
> "reference to undefined identifier: make-hash"
> Should I require a library? I cannot find it in documentation.

This is probably a language issue. In particular, make-hash isn't  
present in the "mzscheme" language, but it is present in the "scheme"  
language.  Try evaluating this in the "Module" language level:

#lang scheme


Hope this helps (NNTR),

John Clements

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