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Update 2025-01-31-racket-v8-16.md #344

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59 changes: 55 additions & 4 deletions blog/_src/posts/2025-01-31-racket-v8-16.md
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Expand Up @@ -12,11 +12,62 @@ We are pleased to announce Racket v8.16 is now available from [https://download.

## As of this release:

- Single line.
- Expanded support for immutable and mutable treelists
- A variety of new treelist utility functions are available:
[`treelist-filter`](https://pre-release.racket-lang.org/doc/reference/treelist.html#%28def._%28%28lib._racket%2Ftreelist..rkt%29._treelist-filter%29%29), [`treelist-flatten`](https://pre-release.racket-lang.org/doc/reference/treelist.html#%28def._%28%28lib._racket%2Ftreelist..rkt%29._treelist-flatten%29%29), et cetera.
- The [`mutable-treelist-prepend!`](https://pre-release.racket-lang.org/doc/reference/treelist.html#%28def._%28%28lib._racket%2Fmutable-treelist..rkt%29._mutable-treelist-prepend%21%29%29) function allows prepending to mutable treelists.
- [Mutable treelists](https://pre-release.racket-lang.org/doc/reference/treelist.html#%28part._.Mutable_.Treelists%29) are [serializable](https://pre-release.racket-lang.org/doc/reference/serialization.html).

- The [`serialize-structs`](https://pre-release.racket-lang.org/doc/reference/serialization.html#%28mod-path._racket%2Fserialize-structs%29) module allows the minimization of
dependencies by providing only a handful of core forms
- The [`flbit-field`](https://pre-release.racket-lang.org/doc/reference/flonums.html#%28def._%28%28lib._racket%2Fflonum..rkt%29._flbit-field%29%29) function allows access to the binary
representation of IEEE floating-point numbers.
- The top-left search box in the [documentation](https://pre-release.racket-lang.org/doc/index.html) works once more.
- The [XML reader](https://pre-release.racket-lang.org/doc/xml/index.html#%28part._.Reading_and_.Writing_.X.M.L%29) is 2-3x faster on inputs with long CDATA
and comments, and avoids some internal contract checks to
obtain a 25% speedup on large documents generally.
- The [pregexp syntax includes "\X" to match a grapheme cluster](https://pre-release.racket-lang.org/doc/reference/regexp.html#(part._regexp-syntax)),
following Perl and PCRE.
- The [`read-json*`](https://pre-release.racket-lang.org/doc/json/index.html#%28def._%28%28submod._%28lib._json%2Fmain..rkt%29._for-extension%29._read-json%2A%29%29) and [`write-json*`](https://pre-release.racket-lang.org/doc/json/index.html#%28def._%28%28submod._%28lib._json%2Fmain..rkt%29._for-extension%29._write-json%2A%29%29) functions allow customization of
the Racket representation of JSON elements, eliminating the need for
a separate "translation" pass.

- New port I/O functions
- The [`open-input-nowhere`](https://pre-release.racket-lang.org/doc/reference/port-lib.html#%28def._%28%28lib._racket%2Fport..rkt%29._open-input-nowhere%29%29) function creates an empty input port.
- The [`pipe-port?`](https://pre-release.racket-lang.org/doc/reference/pipeports.html#%28def._%28%28quote._~23~25kernel%29._pipe-port~3f%29%29) function makes it possible to determine whether a
port is created by [`make-pipe`](https://pre-release.racket-lang.org/doc/reference/pipeports.html#%28def._%28%28quote._~23~25kernel%29._make-pipe%29%29).
- The [`port-file-stat`](https://pre-release.racket-lang.org/doc/reference/file-ports.html#%28def._%28%28quote._~23~25kernel%29._port-file-stat%29%29) function allows gathering information about the
file that is the source or target of a file-stream port.

- A revised representation of pointers improves the performance of foreign
function calls.
- [`ptr-ref`](https://pre-release.racket-lang.org/doc/foreign/foreign_pointer-funcs.html#%28def._%28%28quote._~23~25foreign%29._ptr-ref%29%29) and [`ptr-set!`](https://pre-release.racket-lang.org/doc/foreign/foreign_pointer-funcs.html#%28def._%28%28quote._~23~25foreign%29._ptr-set%21%29%29) are substantially faster.
- [Details the FFI improvement (with some benchmarking results)](https://racket.discourse.group/t/fixnum-slow-despite-docs/3409/6)

- In anticipation of the fifteenth [RacketCon](https://con.racket-lang.org), the [`fifteenth`](https://pre-release.racket-lang.org/doc/reference/pairs.html#%28def._%28%28lib._racket%2Flist..rkt%29._fifteenth%29%29) function
returns the fifteenth element of a list.
- Racket has an improved multi-line convention for error messages.
- The [`db` library](https://pre-release.racket-lang.org/doc/db/index.html) allows [`prepare`](https://pre-release.racket-lang.org/doc/db/query-api.html#%28def._%28%28lib._db%2Fbase..rkt%29._prepare%29%29) on virtual statements.
- The [`student-t` distribution](https://pre-release.racket-lang.org/doc/math/Real_Distribution_Families.html#%28part._.Student-t_.Distributions%29) is part of the [`math/distributions` library](https://pre-release.racket-lang.org/doc/math/dist.html).
- [Expeditor](https://pre-release.racket-lang.org/doc/expeditor/index.html) supports customizing the prompt, using the [`prompt`
argument to `call-with-expeditor`](https://pre-release.racket-lang.org/doc/expeditor/Expeditor_API.html#%28def._%28%28lib._expeditor%2Fmain..rkt%29._call-with-expeditor%29%29).
- There is a [guide to adding internationalization for a new (human)
language.](https://racket.discourse.group/t/advent-2024-day-translate-drracket-interface-in-your-language/3407)
- `#lang htdp/asl` incorporates [Graphical Debugger](https://docs.racket-lang.org/drracket/debugger.html#%28part._.Debugger_.Buttons%29) support.
- There is lots of new documentation, and many defects repaired!

- Paragraph paragraph paragraph paragraph paragraph paragraph paragraph
paragraph paragraph paragraph paragraph paragraph paragraph paragraph
paragraph. ([link text](https://docs.racket-lang.org/links-to-thing))
The following people contributed to this release:

a11ce, Alex Knauth, Alexander Shopov, Alexis King, Andrew
Mauer-Oats, Anthony Carrico, Bert De Ketelaere, Bob Burger, Bogdan
Popa, D. Ben Knoble, David Van Horn, Gustavo Massaccesi, halfminami,
Hao Zhang, Jacqueline Firth, Jinser Kafka, JJ, John Clements, Jörgen
Brandt, Kraskaska, lafirest, Laurent Orseau, lukejianu, Marc
Nieper-Wißkirchen, Matthew Flatt, Matthias Felleisen, mehbark, Mike
Sperber, Noah Ma, Onorio Catenacci, Oscar Waddell, Pavel Panchekha,
payneca, Robby Findler, Sam Phillips, Sam Tobin-Hochstadt, Shu-Hung
You, Sorawee Porncharoenwase, Stephen De Gabrielle, Wing Hei Chan,
Yi Cao, and ZhangHao.

## Thank you

Expand Down