News

Malaysia Open: I’m about 70% of my old form, says Se-young

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South Korea’s world champion and world No. 1 women’s singles shuttler An Se-young says she is only about 70% of her old form that saw her winning five straight titles and a total of 10 titles last year.

The 21-year-old advanced into the semi-finals of the Petronas Malaysia Open after beating Singapore’s Yeo Jia Min 16-21, 21-12, 21-19 in a tough quarter-final battle on Friday (Jan 12).

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Andy Wingo: micro macro story time

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Today, a tiny tale: about 15 years
ago I was working
on Guile’s macro
expander.
Guile inherited this code from an early version of Kent Dybvig’s
portable syntax
expander. It
was… not easy to work with.

Some difficulties were essential. Scope is tricky, after all.

Some difficulties were incidental, but deep. The expander is ultimately
a function that translates Scheme-with-macros to Scheme-without-macros.
However, it is itself written in Scheme-with-macros, so to load it on a
substrate without macros requires a pre-expanded copy of
itself,
whose data representations need to be compatible with any incremental
change, so that you will be able to use the new expander to produce a
fresh pre-expansion. This difficulty could have been avoided by
incrementally bootstrapping the
library. It
works once you are used to it, but it’s gnarly.

But then, some difficulties were just superflously egregious. Dybvig is
a totemic developer and researcher, but a generation or two removed
from me, and when I was younger, it never occurred to me to just email
him to ask why things were this way. (A tip to the reader: if someone
is doing work you are interested in, you can just email them. Probably
they write you back! If they don’t respond, it’s not you, they’re probably just
busy and their inbox leaks.) Anyway in my totally speculatory reconstruction of events,
when Dybvig goes to submit his algorithm for publication, he gets annoyed that “expand”
doesn’t sound fancy enough. In a way it’s similar to the original SSA
developers thinking that “phony functions” wouldn’t get
published.

So Dybvig calls the expansion function “χ”, because the Greek chi looks
like the X in “expand”. Fine for the paper, whatever paper that might
be, but then in psyntax, there are all these functions named
chi and chi-lambda and all sorts of nonsense.

In early years I was often confused by these names; I wasn’t in on the
pun, and I didn’t feel like I had enough responsibility for this code to
think what the name should be. I finally broke down and changed all
instances of “chi” to “expand” back in 2011, and never looked back.

Anyway, this is a story with a very specific moral: don’t name your
functions chi.

Build your phone app on your phone

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TWIF generated on Thursday, 11 Jan 2024, Week 2

Community News

Akash Yadav announces the inclusion of AndroidIDE

Though still in its early stages (beta), AndroidIDE provides features like Gradle build support, code completions, code actions, basic code navigation, source code analysis, drag-n-drop UI designer (experimental) and a Termux-based terminal with required packages.

Its feature list is interesting, but do note the biggest limitations though: no NDK support at least for now (this means that if your app has per architecture libs, they can’t yet be built).

For fun we’ve tried to build F-Droid client on our phones but hit a bug, we’ll report back on progress in future TWIFs.

@Licaon_Kter updates us on NewPipe:

As the first TWIF of the year mentioned, latest NewPipe versions are not yet published since they were not reproducible. The NewPipe team is aware and we are waiting for a fix.

SimpleX Chat was updated to version 5.4.2 for the arm64 architecture too, hence you’ll see an update, albeit the version is the same.

Smoke and SmokeStack were updated too, bringing a new SmokeStack icon but also loosen the minimal needed version, from Android 9 to Android 7.1, so more users can enjoy them.

Updated Apps

75 more apps were updated

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A 26 bit build of RISC OS

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This is a Rom Image and hard disc image of RISC OS, built from the open ROOL sources, but compiled up in 26bit compatible mode. It mostly uses code from approx 2000-2002, compiled up with a set of contempory tools. It should be compatible with Acorn RiscPCs, A7000s, A7000+, and the emulator RPCEmu. ↫ Peter Howkins I’m not particularly well-versed in the world of RISC OS, but I think this build is targeting older machines that use 26bit ARM processors.

Do Me Over

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Hello guys if you want to send any amount of donation I’m grateful can send via paypal>> https://shorturl.at/epCQ8 thank you in advance

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Teo-Ong after epic second round win: When the fans don’t give up, so don’t we

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Malaysia’s independent men’s doubles pair Teo Ee Yi-Ong Yew Sin say they will not give up when the fans keep on cheering for them. The world No. 12 pair came from behind in the rubber set to beat Denmark’s Kim Astrup-Anders Skaarup Rasmussen 21-10, 11-21, 24-22 in their second round of the Petronas Malaysia Open on Thursday (Jan 11).

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