Fw: [plt-scheme] define-promise-type and let-promise-type

From: Jos Koot (jos.koot at telefonica.net)
Date: Fri Oct 31 07:22:15 EDT 2008

replace in line 73 promise? by *promise?

----- Original Message ----- 
From: Jos Koot 
To: Eli Barzilay 
Cc: plt-scheme at list.cs.brown.edu 
Sent: Tuesday, October 28, 2008 10:38 PM
Subject: [plt-scheme] define-promise-type and let-promise-type

Attached a module that exports delay, lazy, force and promise?, but in addition the syntaxes: define-promise-type and let-promise-type. The latter two define cq locally bind distinct types of promises. A force of a promise of some type does not force promises of any other type. The module is based on that currently used in PLT Scheme.
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