[plt-scheme] *const

On Apr 5, 2009, at 4:22 PM, David Van Horn wrote:

> Matthias Felleisen wrote:
>> On Apr 5, 2009, at 3:45 PM, David Van Horn wrote:
>> Thanks for looking it up.
>>> Rereading this part of TLS, I can only conclude that this was  
>>> written before Matthias visited the pope.
>> I suspect you're wrong. Again no where close to a book, but look  
>> at the copy right.
>
> Well, the Little LISPer is (c) 1986, 1974.  The first MIT edition  
> is 1987.  My copy of TLS, which is ed 4, is from 1996.

[After popeism :-)]


> I guess the important thing for Jon to note, since he wrote this is  
> "the point where they introduce types", is that "types" here  
> doesn't mean what is typically meant by "types" in the context of a  
> programming language.  The book uses "type" to mean the different  
> grammatical forms of expressions.  There are 6: constants,  
> identifiers, applications, etc.
>
> This is different from what is meant by "types" in Typed Scheme,  
> for example.

Yeap :-)