coolbutuseless

coolbutuseless, 4 months ago to random

Adventures in CRAN: Another CRAN rejection for {yyjsonr}.

CRAN is now reporting a clang-ASAN issue that I cannot reproduce with my clang-ASAN setup (using {rhub2})

Now what am I supposed to do?

Note: I have some line numbers related to the error, so I can do some digging.

But I can't do any testing to see if it's fixed. I have to use CRAN submission as my test runner.

Not something I want. And pretty sure they don't want it either.

#RStats

coolbutuseless, 9 months ago to random

#RStats #HotTake

{remedy} AddIns -> AlignEqual() #FTW

coolbutuseless, 10 months ago to random

I'm revisiting the problem of safe evaluation of untrusted R code.

That is: How could you easily run code from an untrusted source? How would you stop them from running "file.remove()" or worse?

I found the old shiny app I made to demo the idea.

Can you break out of the sandbox and make it run unsafe code? "rm()"? "file.remove()?

https://coolbutuseless.shinyapps.io/shiny-safe-eval/

#RStats #BreakMyStuff

coolbutuseless, 9 months ago to random

Work-in-progress: New #RStats JSON library

Early results on a microbenchmark look promising!

Fastest JSON parser for R?

Note: Benchmark is not be indicative of real-world use cases. Performance gap narrows on larger examples.

#SaturdayCoding

Output of #RStats code benchmarking new JSON parser. Results show new parser is faster than jsonlite and RcppSimdJson on this microbenchmark.

coolbutuseless, 7 months ago to random

TIL: someone once attempted refactoring R from C to C++

Project name: CXXR

https://www.cs.kent.ac.uk/projects/cxxr/

#RStats

coolbutuseless, 2 months ago to random

Survey: what new bit of syntax would you like in base #RStats?

What should the following bits of syntax do?

• ===
• ++ And --
• +=
• //
• ?
• {{ }}
• [[[ ]]]
• <<==
• (?: X)

coolbutuseless, 11 months ago to random

Free #RStats idea:

magic-wormhole package so a user can transfer data to/from other computers directly in an R session

https://github.com/magic-wormhole/magic-wormhole

coolbutuseless, 11 months ago to mastodon

#Mastodon #RStats Hivemind:

Is anyone interfacing R with hardware? Or know of packages which do?

Reading/writing from/to sensors?
Writing to LCD character displays?
LEGO Mindstorms?
Etc, etc ...

links/github/anything appreciated...

coolbutuseless, 10 months ago to random

#RStats hivemind:

Does anyone actually use any type checking syntax hacks with their R code?

Do they even exist?

I'm thinking like methods similar to mypy or typescript - not just a bunch of explicit "stopifnot" checks at the start of a function.

coolbutuseless, 10 months ago to random

Update v0.1.1 {callme} - a package for easily(?) compiling and loading C code into #RStats

• Now windows compatible
• DLL is now automatically unloaded

https://github.com/coolbutuseless/callme

image/png

coolbutuseless, 9 months ago to random

Interesting #RStats discovery: there are 4 types of special dates to match the 4 types of special numerics:

as.Date(NA)
as.Date(NaN)
as.Date(Inf)
as.Date(-Inf)

coolbutuseless, 9 months ago to random

#RStudio wish: Open the same file up in two panes so I can view different parts at the same time.

#RStats

coolbutuseless, 9 months ago to random

Update {yyjsonr} v0.1.1

Fastest(?) JSON/NDJSON parser for #RStats

• Removed overhead when setting config options - now much faster for small JSON strings
• Added from_json_raw() to parse json from raw bytes containing utf-8 chars

Benchmarks galore on github README.

• 10x faster than jsonlite parsing 'iris' dataset from file.
• 10x faster than jsonlite parsing 1000 rows of ndjson from file

Feedback welcomed as I figure out a roadmap to CRAN

https://github.com/coolbutuseless/yyjsonr

https://coolbutuseless.github.io/package/yyjsonr/index.html

Benchmark of yyjsonr package reading ndjson from file. yyjsonr shows speed advantage over other json packages for R

coolbutuseless, 7 months ago to random

Today I am pleased to annouce the c64-verse!

I trio of packages for c64 development in #RStats

1. {c64vice} talks to a running VICE c64 emulator to send/receive info, cpu registers, memory dumps etc

2. {c64asm} is a revamp of {r64}, a pure-R assembler for c64 6502 machine code - including syntax for including R data into code

3. {c64tass} a wrapper for TASS - the de factor standard in c64 assemblers.

Logo for c64tass package. A hexagon with a Commodore computing logo in the centre.
Logo for c64asm package. A hexagon with a Commodore computing logo in the centre.
Logo for c64vice package. A hexagon with a Commodore computing logo in the centre.

coolbutuseless, 3 days ago to random

#RStats 4.4.0 now includes "%||%" in base

I've always called it the "null operator", but I'm happy to learn of a better name.

coolbutuseless, 8 months ago to random

It has come to this:

All blog posts will now be R packages hosted on GitHub because I don't know if I have the patience to figure out how to upgrade my hugo/blogdown franken-blog to whatever the new hotness is (Quarto?) so I'll just make a new package and a README.Rmd for everything.

#RStats #OldManYellsAtCloud

coolbutuseless, 9 months ago to random

Anyone know of an #RStats package that shows fine-grained diffs between strings?

e.g. compare("abcdef", "abcedf")

Would print something like:

"abc🅳🅴f"

I hacked something together with adist() and ANSI (pictured), but would like a more robust solution :)

coolbutuseless, 4 months ago to random

Adventures with CRAN.

Adding tests and vignettes just seems to increase the exposed surface area for CRAN checks.

If I want a better chance of getting my pkg on CRAN, I should just never add tests?

#RStats

coolbutuseless, 9 months ago to random

I spend more time fixing issues with GitHub Actions for my R packages than actually enjoying the benefit they're supposed to offer.

Every time I come back to an older project something is broken in the GitHub Actions config due to the R {actions} package changing.

#RStats hot take

coolbutuseless, 10 months ago to random

#Quarto gurus: does anyone know how to define a new chunk type?

e.g. say I wanted a cobol chunk

How can I

• define handling the code in the chunk?
• Access/handle the chunk options?
• capture and return output for the final document

#RStats #Quarto

coolbutuseless, 3 months ago to random

#RStats hypothetical: what would happen if I

• manually allocated some memory in C (with malloc)
• Crafted the memory to be an R object by writing a proper SEXP header for it
• Returned this to R

Would R consider this cuckoo object to be real? It wouldn't appear in the list of objects to be garbage collected - would that impact its validity?

#InvasionOfTheBodySnatchers

coolbutuseless, 10 months ago to random

Today's #RStats puzzle:

x = list(apple = 1, 8ball = 2)

How do you get R to properly autocomplete the name '8ball' when typing:

x$8<TAB>

coolbutuseless, 2 months ago to random

#RStats hivemind:

What's the current preferred solution for running multiple R versions on macOS?

rig?
rswitch?

something else?

coolbutuseless, 1 month ago to random

#RStats Help needed!

I want to email R-devel & get clarification on "Can we create custom connections in packages?"

I find the situation confusing because using the "Connections.h" is mentioned in R-exts manual - and so formally(?) part of the API

But this conflicts with the NOTE generated if you try to use "R_new_custom_connection()" which says it is "non-API"

Am I tilting at windmills? Poking the bear? HELP!

Edits/suggestions welcomed in the gist below.

https://gist.github.com/coolbutuseless/2b261e2f7f54206c1263fbca0e71ac64

#RStats

coolbutuseless, 1 month ago to random

Is there a blessed way to create a RAWSXP from an existing chunk of memory within C?

Specifics:

• The memory is already allocated elsewhere
• I don't want to use memcpy, just wrap the memory where it is such that the RAWSXP points to it.
• I don't want the garbage collector to know about it - I will free the memory myself later.
• It still has to be valid RAWSXP that I can use in R

This is a bit of a callback to this post: https://fosstodon.org/@coolbutuseless/111956983679205597

#RStats #challenge