What is the meaning of # in R5RS Scheme number literals

Posted by ikmac on Programmers See other posts from Programmers or by ikmac
Published on 2012-12-08T20:19:50Z Indexed on 2012/12/08 23:35 UTC
Read the original article Hit count: 160

Filed under:

Scheme

There is a partial answer on Stack Overflow, but I'm asking something a teeny bit more specific than the answers there.

So... Does the formal semantics (Section 7.2) specify the meaning of such a numeric literal? Does it specify the meaning of numeric operations on the value resulting from interpreting the literal?

If yes, what are the meanings (in English -- denotational semantics is all greek characters to me :))?

Related posts about Scheme

About "If.." in Scheme (plt-scheme)

as seen on Stack Overflow - Search for 'Stack Overflow'
I had a pretty simple requirement in my Scheme program to execute more than one statement, in the true condition of a 'if'. . So I write my code, something like this: (if (= 1 1) ((expression1) (expression2)) ; these 2 expressions are to be executed when the condition is true (expression3)… >>> More
Detecting EOF in a Binary File using Scheme

as seen on Stack Overflow - Search for 'Stack Overflow'
(define (read-all-input) (local ((define line (bytes->list (read-bytes 4)))) (if (eof-object? line) empty (cons line (read-all-input))))) (void (read-all-input)) The above code fails because bytes-list expects an argument of type byte string, but is given # >>> More
Scheme: Detecting duplicate elements in a list

as seen on Stack Overflow - Search for 'Stack Overflow'
Does R6RS or Chez Scheme v7.9.4 have a library function to check if a list contains duplicate elements? Alternatively, do either have any built in functionality for sets (which dis-allow duplicate elements)? So far, I've only been able to find an example here. The problem with that is that it doesn't… >>> More
Scheme implementations - what does it mean?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I'm a beginning student in CS, and my classes are mostly in Java. I'm currently going through "Little Schemer" as a self study, and in the process of finding out how to do that I have found numerous references to "implementations" of Scheme. My question is, what are implementations? Are they… >>> More
Traversing Scheme function as a list

as seen on Stack Overflow - Search for 'Stack Overflow'
Isn't it possible to treat functions in Scheme as any other list? Basically, what I want do to is something like this: (define (foo) "hello") (cdr foo) ; or similar, should return the list ((foo) "hello") I've found a similar discussion about this, and I feel a bit disappointed if this is not… >>> More

Developer IT

What is the meaning of # in R5RS Scheme number literals - Developer IT

What is the meaning of # in R5RS Scheme number literals

Scheme

Related posts about Scheme

About "If.." in Scheme (plt-scheme)

Detecting EOF in a Binary File using Scheme

Scheme: Detecting duplicate elements in a list

Scheme implementations - what does it mean?

Traversing Scheme function as a list

Categories cloud