(λ LIPS)

LIPS: Scheme based powerful lisp interpreter in JavaScript for browsers and Node. Maintained by @jcubic Aspiring R7RS Scheme.
Check Scheme Bookmark REPL.

[(λ LIPS) @LIPS_scheme]

Watch this video presentation of the LIPS Scheme from last year #FOSDEM by @jcubic

Link 👇

#JavaScript #Scheme #lisp #programming #TechTwitter #code #coding

[Jakub T. Jankiewicz 🇵🇱 @jcubic]

Finished working on improving exceptions in @LIPS_scheme

Now I need to write unit tests

[Jakub T. Jankiewicz 🇵🇱 @jcubic]

Have a real case of Heisenbug in unit test for my #JavaScript #OpenSource project @LIPS_scheme.

One assertion fails, but only if there are an exact number of assertions in two tests. If I add a log or remove any of the assertions (not the one that fails), the test passes.

[(λ LIPS) @LIPS_scheme]

https://t.co/NQBTTzS63t

[(λ LIPS) @LIPS_scheme]

SRFI 267: Raw String Syntax example implementation inspired the creation of the LIPS Scheme macro to define new hash syntax. Which are a poor man's syntax extensions.

It works out of the box with the current beta version of LIPS.

Link to SRFI in the comments 👇

#Scheme #lisp

[Jakub T. Jankiewicz 🇵🇱 @jcubic]

@hello_777_world @nodejs @LIPS_scheme The final solution:

I needed to handle complex numbers and big float numbers, which need different rounding.

[Jakub T. Jankiewicz 🇵🇱 @jcubic]

It looks like @nodejs broke how ** operator works in @LIPS_scheme.

My code was testing:

(expt 0.5 -1/2) which executes 0.5 ** -0.5

It use to return 1.414213562373095 now it returns 1.4142135623730951

I'm not sure how to fix the tests, so they work in all version of Node.

[(λ LIPS) @LIPS_scheme]

https://t.co/f8bp4Sna91

[(λ LIPS) @LIPS_scheme]

A new beta version of LIPS Scheme just got released

[(λ LIPS) @LIPS_scheme]

https://t.co/HMcHyRhQlZ

[(λ LIPS) @LIPS_scheme]

🚨A new Blog post 🚨

How to serialize any object in #JavaScript

Link 👇

[(λ LIPS) @LIPS_scheme]

Thanks to Niels Wijers, LIPS #Scheme now is available as lips npm package.

You can install it with

npm install lips@beta

#JavaScript #lisp

[Jakub T. Jankiewicz 🇵🇱 @jcubic]

Just written a new article about internals of syntax extensions in @LIPS_scheme, my #Scheme implementation in #JavaScript.

Syntax extensions are a way to add new syntax to the language.

Link in the comment 👇

[(λ LIPS) @LIPS_scheme]

https://t.co/caMhth5EYX

[(λ LIPS) @LIPS_scheme]

Introduction to hygienic macros in #Scheme 👇

[Jakub T. Jankiewicz 🇵🇱 @jcubic]

Do you know that Lisp is the second oldest programming language that is still in use?

Learning lisp can make you a better developer even if you don't use it

I recommend starting with Scheme. This is the language that inspired JavaScript. And the reason you have closures

[Jakub T. Jankiewicz 🇵🇱 @jcubic]

Just published a new article about my project @LIPS_scheme internals.

LIPS is a #lips interpreter written in #JavaScript

[(λ LIPS) @LIPS_scheme]

New blog post about LIPS Scheme internals

https://t.co/qZTSVSfZKi

#lisp #scheme #JavaScript

[Jakub T. Jankiewicz 🇵🇱 @jcubic]

It took few days, but I finally found the root cause of breakage of this code in @LIPS_scheme

The continuations were not working properly even after implementing for-each in Scheme. The problem was apply function that was part of the for-each code.

#lisp #scheme

[Jakub T. Jankiewicz 🇵🇱 @jcubic]

Just when I've though that continuations in @LISP_scheme are all working, fund another bigger example, and then I was able to create this minimal one.

The code should exit after the first call, but it continues to loop through the list.

#lisp #scheme

[Jakub T. Jankiewicz 🇵🇱 @jcubic]

Huge achievement today 🎉

While writing a comment on @GitHub why new interpreter in @LIPS_scheme is async. Got an idea about replacing async..await with generators (yield).

All it takes was this function, the inspiration came from Babel.

#JavaScript