dylan-lang/general

Dylan programming language -- http://opendylan.org -- http://play.opendylan.org

promovicz

@promovicz

that code comes from deep embedded so it has no real dependencies except for stdio.

and it's less than 4k on x86, libc excluded.

Bruce Mitchener

@waywardmonkeys

Don't even need stdio ... some extra functions and a command enum will be enough for her for now, I think.

promovicz

@promovicz

sure :)

Jon Godbout

@Slids

Doing Advent of Code 2021 in Dylan this year (been meaning to try Dylan for a few years)

Carl Gay

@cgay

Hey Jon. (^^ the co-worker I was talking about)

I mentioned you were trying it out again.

Jon Godbout

@Slids

Amazing how muhc longer simple things take in a new language...

Carl Gay

@cgay

indeed

Carl Gay

@cgay

Interesting...even if I fix make-dylan-app AOC-1 to work, OD can't find the project file, apparently due to uppercase in the name. aoc-2 works fine.

It's something in the registry code because point OD at the .lid file works, though the compiler does downcase the name for output.

promovicz

@promovicz

@Slids welcome!

things might take longer in a new language, but then things are actually easier in some languages. Dylan does that for some things. especially complicated things IMO.

Jon Godbout

@Slids

For context I'm a common lisp dev at Google/ITA
Question: The dylan-emacs-mode github repo said it's available in melpa, but I couldn't find it, has it been removed?

and thanks for the welcome!

promovicz

@promovicz

@Slids are you on melpa-stable? I think I remember the dylan modes not being in there (yet).

Jon Godbout

@Slids

http://melpa.milkbox.net/packages

so idk (I usually use blaze in the google monorepo)

promovicz

@promovicz

they are actually on melpa-stable. I just checked. would have created a ticket if they weren't present. :)

Jon Godbout

@Slids

okay, I see it now,

The thing I noticed first is how much easier it was to install Dylan now then when I tried in 2018

promovicz

@promovicz

it used to be just a simple tarball before that. I wasn't around during that time. LLVM support probably complicated things for a while.

opendylan shares the problem of needing bootstrap compilers with lisp of course.

Peter S. Housel

@housel

LLVM support wasn’t fully enabled until 2019

Jon Godbout

@Slids

It may have been 2019, probably was as I was at ELS and it was the first time I was away from my newborn

@cgay may remember?

Carl Gay

@cgay

fraid not

promovicz

@promovicz

I think I found a bug in the dylan vim highlighter.

-syn match      dylanNumber             "\<[0-9]\+\>\|\<0[xX][0-9a-fA-F]\+\>\|\<0[oO][0-7]\+\>"
+syn match      dylanNumber             "\<[0-9]\+\>\|\<#[xX][0-9a-fA-F]\+\>\|\<#[oO][0-7]\+\>"

Carl Gay

@cgay

Looks like it.

(Does it have #b?)

Carl Gay

@cgay

early night for me. hasta mañana.

promovicz

@promovicz

indeed it doesn't. I'll add it. it seems like vim takes PRs via github these days.

any idea if neovim merges from vim or if I need to submit separately?

(floats are separate btw and they look correct)

Peter S. Housel

@housel

Do they handle d (<double-float>) or s (<single-float>) as well as e exponent?

promovicz

@promovicz

oh you can specify that!? is there an e for <extended-float> too?

Peter S. Housel

@housel

There's an x but we don't implement <extended-float> in OD

promovicz

@promovicz

I don't think it does. it misses the type specifier.

Peter S. Housel

@housel

e is just floating exponent without a type specified; DFMC picks a type based on how many digits of precision you include (not intuitive if you ask me)

promovicz

@promovicz

sure. I know we don't really do <extended-float>. I just recently considered adding it to marlais because it looked easy. which it isn't because libc and libm don't do a lot of long double.

while doing that I found out that single in C gets converted to double when you pass it to a varargs function.

that's why there is no format specifier for single.

Jon Godbout

@Slids

Okay, day 3 of AoC is done, anyone wishing to see pretty bad dylan code can look; https://github.com/Slids/advent-of-code-2021

question: Can I write lambdas in dylan?

Peter S. Housel

@housel

Yes, lambda is spelled method

    map(method(p) as(<directory-locator>, p) end,
        tokenize-environment-variable(path))

Jon Godbout

@Slids

tanks!

Jon Godbout

@Slids

having a programming language with the same name as a major artist leads to mediocre googling...

Carl Gay

@cgay

@housel what would be the best way to convert 8 big-endian bytes representing a two's complement int64 to a Dylan <integer>? I'm currently doing this: https://github.com/cgay/time/blob/master/tzif.dylan#L288 but it broken for a couple of reasons and I'm wondering if using <machine-word> and then coercing to integer would be a better way to go.

I can make it work with my current approach but getting the sign right and not overflowing unnecessarily is a bit finicky.

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