Robpike/Lisp: Toy Lisp 1.5 interpreter in Go • Hacker News Board

Re: Robpike/Lisp: Toy Lisp 1.5 interpreter in Go

#11

Post by alrs » Wed, Jun 17, 2020, 9:43 AM UTC

GOMODULE111, who needs it? :)

Re: Robpike/Lisp: Toy Lisp 1.5 interpreter in Go

#12

Post by grovehaw » Wed, Jun 17, 2020, 9:48 AM UTC

zerr wrote: post #9

4ad wrote: post #6

Earlier quoted context omitted.

APL, K, J. Game of life in APL: https://www.youtube.com/watch?v=a9xAKttWgP4

How about some CRUD app examples? :)

Dyalog is an APL vendor, they also offer a non-commercial license and high quality documentation. They have a case study of a school management system that is a record keeping system [0]. [0] https://www.dyalog.com/case-studies/education.htm

Re: Robpike/Lisp: Toy Lisp 1.5 interpreter in Go

#13

Post by mseepgood » Wed, Jun 17, 2020, 9:51 AM UTC

G4BB3R wrote: post #4

smabie wrote: post #3

Earlier quoted context omitted.

Personally, I find that one much more interesting. Before I was familiar with array languages, I hoped that functional programming and lisp would become the new zeitgeist of software development. Now, I think that array languages have the most promise in revolutionizing the discipline. While it probably wont happen, I wouldn't complain if array languages became the defacto norm for most new applications.

Is it a deeper rabbit hole than FP? Could you give some links or good array language names?

Wolfram Language / Mathematica, MATLAB, R

Re: Robpike/Lisp: Toy Lisp 1.5 interpreter in Go

#14

Post by kitd » Wed, Jun 17, 2020, 10:28 AM UTC

It is a pedagogical experiment to see just how well the interpreter (actually EVALQOUTE/APPLY) defined on page 13 of that book really works. The answer is: perfectly, of course.

Well timed! I've just been trying this out myself after reading Maxwell's Equations of Software [1]. It's fun realising that the "base" functions you're doing in Go can be reduced to even more fundamental forms using the Lisp you're implementing.

[1] http://www.righto.com/2008/07/maxwells-equations-of-software...

Re: Robpike/Lisp: Toy Lisp 1.5 interpreter in Go

#15

Post by wejick » Wed, Jun 17, 2020, 12:37 PM UTC

He wrote unit test +1000

Re: Robpike/Lisp: Toy Lisp 1.5 interpreter in Go

#16

Post by jeffrallen » Wed, Jun 17, 2020, 12:49 PM UTC

Well actually, he should have just done it in Rust...

Re: Robpike/Lisp: Toy Lisp 1.5 interpreter in Go

#17

Post by melling » Wed, Jun 17, 2020, 1:05 PM UTC

chewxy wrote: post #7

I hope one day when I grow old I get to engage in fun pasttimes like what Rob did.

Balance is important too.

He won a Silver Medal for archery in the Olympics.

Re: Robpike/Lisp: Toy Lisp 1.5 interpreter in Go

#18

Post by fishbacon » Wed, Jun 17, 2020, 1:13 PM UTC

mseepgood wrote: post #2

He also implemented an APL-like interpreter in Go: https://github.com/robpike/ivy

The presentation he gave on it is lovely.

https://www.youtube.com/watch?v=PXoG0WX0r_E

Re: Robpike/Lisp: Toy Lisp 1.5 interpreter in Go

#19

Post by dchest » Wed, Jun 17, 2020, 1:18 PM UTC

melling wrote: post #17

chewxy wrote: post #7

I hope one day when I grow old I get to engage in fun pasttimes like what Rob did.

Balance is important too. He won a Silver Medal for archery in the Olympics.

...using Lisp's parentheses as a bow.

(Hint: look up 1980 Olympics)

Re: Robpike/Lisp: Toy Lisp 1.5 interpreter in Go

#20

Post by majewsky » Wed, Jun 17, 2020, 1:21 PM UTC

alrs wrote: post #11

GOMODULE111, who needs it? :)

He doesn't pull in any dependencies except the stdlib, so he does in fact not need it.