Show HN: Heresy, a BASIC-inspired functional Lisp

by jarcane • 12 years ago

34 13 12 years ago

gus_massa• 12 years ago

Have you tried to use keywords instead of normal symbols in the forms?

For example, instead of

  (if *test* then *do1* else *do2*)

define it to use

  (if *test* #:then *do1* #:else *do2*)

[Disclaimer: I still use VB6 from time to time.]

jarcane4• 12 years ago

I didn't really think about it. Doing them as literals felt more idiomatic to classic BASIC, and it was easy to implement (initially) with syntax-rules.

s_dev• 12 years ago

I love the name.

Tloewald• 12 years ago

If you could elimiate the outermost braces and have a line continuation character you might get something even less intimidating.

In other words anything between two auccessive non escaped line endings is treated as being parenthesized. Suddenly you can write lisp without parens everywhere.

akkartik• 12 years ago

Like this toy lisp of mine: http://akkartik.name/post/wart

jarcane4• 12 years ago

It's an interesting idea. I'd have to study up a lot more on how to do reader macroing in Racket. Mostly I was more focused on terminology (going forward my naming policy will be to favor BASIC names over Lisp ones, same reason why print is display in Heresy), and on providing a kind of 'nutrasweet' Lisp rather than a full blown functional BASIC dialect (which is as yet beyond my skills with the language).

axblount• 12 years ago

There's an SRFI that outlines an indentation based Scheme syntax called Sweet-expressions. It also adds infix operations.

http://srfi.schemers.org/srfi-110/srfi-110.html

jarcane4• 12 years ago

Interesting, turns out there is a version of this for Racket: https://github.com/takikawa/sweet-racket

I will have to take a gander and see if it's compatible.

3ifbyw• 12 years ago

I expected GOTO implemented with continuations. Very disappointing.

jarcane4• 12 years ago

CL can already do GOTO. And the BREAK and CARRY implementations use exit continuations.

I did consider doing it in CL though because then I'd have an excuse to call FUNCTION and FUNCALL "SUB" and "GOSUB".

skrebbel• 12 years ago

Nice, but I miss ON ERROR RESUME NEXT.

giancarlostoro• 12 years ago

Odd.. I had a similar project I worked on at work one day out of boredom. Except mine was called "HereC", I was trying to make C more Basic like. Visual Basic 6 was my first language, so sometimes it's fun to 'go back' to it. GAMBAS is a neat little language I play with now and then.

zem• 12 years ago

euphoria [http://www.rapideuphoria.com/] is the closest I've seen to a decent c/basic cross. worth checking out if you're interested in that space.

Show HN: Heresy, a BASIC-inspired functional Lisp

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