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OCaml Weekly News

Previous Week<= /a> Up Next Week

Hello

Here is the latest OCaml Weekly News, for the week of August 03 to 10, 2021.

Lwt 5.4.2

Archive: https= ://discuss.ocaml.org/t/ann-lwt-5-4-2/8248/1

Rapha=C3=ABl Proust announced

We are glad to announce the release of version 5.4.2 of Lwt: a bugfix-only = release.

https://githu= b.com/ocsigen/lwt/releases/tag/5.4.2

You can update to this version in opam : 

opam update
opam upgrade lwt

Thanks to the contributors for finding and fixing the bugs, leading to this= release. Check out the release notes (link above) for a full list.

OCaml Workshop 2021: Call for Volunteers

Archive: https://discuss.ocaml.org/t/ocaml-workshop-2021-call-f= or-volunteers/8253/1

Fr=C3=A9d=C3=A9ric Bour announced

The OCaml Workshop will be held virtually, just like last year. We are look= ing for volunteers to fill the role of session host.

Session Hosts

On August 27, the session hosts will assist session chairs in streaming the= pre-recorded videos as well as helping and moderating the Q&A sessions. They will al= so be responsible for security and be ready to react to potential threats and wrongdoers.

This year there will be only one broadcast for each session, but the worksh= op day will be quite long. There will be six sessions, lasting one hour and a half, as wel= l as a one hour keynote.

Duties
  • Moderating the text chats
  • Controlling microphones in the video-conferencing
  • Watching for the time
  • Performing sound checks
  • Welcoming and otherwise guiding participants

opam 2.1.0!

Archive: http= s://discuss.ocaml.org/t/ann-opam-2-1-0/8255/1

R. Boujbel announced

We are happy to announce two opam releases: the freshly new 2.1.0 &= ; the LTS support 2.0.9.

What's new in opam 2.1.0?

  • Integration of system dependencies (formerly the `opam-depext` plugin),= increasing their reliability as it integrates the solving step
  • Creation of lock files for reproducible installations (formerly the `op= am-lock` plugin)
  • Switch invariants, replacing the "base packag= es" in opam 2.0 and allowing for easier compiler upgrades
  • Improved options configuration (see the new `option` and expanded `var`= sub-commands)
  • CLI versioning, allowing cleaner deprecations for opam now and also imp= rovements to semantics in future without breaking backwards-compatibility
  • opam root readability by newer and older versions, even if the format c= hanged
  • Performance improvements to opam-update, conflict messages, and many ot= her areas

You'll find these features presentation in the blog post ; and for a full complete you can take a look pre-releases changelogs<= /a>.

What's in 2.0.9

This 2.0.9 version contains back-ported fixes, you can find more informatio= n in this blog post, especially for fish users & sandbox updates.

Tremendous thanks to all involved people, all those who've tested, re-te= sted, tested again, given feedback, commented on issues, tested, tested, te= sted again…!

The opam team =F0=9F=90=AA

containers 3.5

Archive: = https://discuss.ocaml.org/t/ann-containers-3-5/8257/1

Simon Cruanes announced

I'm glad to announce that version 3.5 of containers has j= ust been released. There's a bugfix for bitvectors, and a tasteful assortment of new functions (see chan= gelog). I want to thank all the contributors, among whom first time contributor @favonia.

The release and changelog can be found he= re

Short contract job for OCaml/C++ programmer

Archive: https://discuss.ocaml.org/t/short-contract-job-for-o= caml-c-programmer/8260/1

Ashish Agarwal announced

We have a small project (possibly only days of work) for an experienced OCa= ml and C++ programmer. If you are available for a short engagement as a contractor, pl= ease DM me. Thank you.

http-multipart-formdata v3.0.1 released

Archive: https://discuss.ocaml.org/t/ann-http-multipart-for= mdata-v3-0-1-released/8261/1

Bikal Lem announced

I am pleased to announce v3.0.1 of http-multipart-formdata. Th= is release follows a major overhaul of the parser as well as the design of the library. Here is the su= mmary of changes:

  1. Flatten module Part_header to part_header
  2. Implement reader/pull based parser to retrieve multipart parts, i.e. im= plement a streaming design. This is very useful if the HTTP fi= le upload is large.
  3. Implement push-based incremental input model, i.e. the library is now a= non-blocking multipart parser
  4. Remove dependency on IO based libs such as lwt, async sinc= e it is no longer needed due to point 3 above.

Github repo: http-multipart-formdata

API doc : API manual

wtr (Well Typed Router) v2.0.0 released

Archive: https://discuss.ocaml.org/t/ann-wtr-well-typed-route= r-v2-0-0-released/8262/1

Bikal Lem announced

I am pleased to announce v2.0.0 release of wtr (Well Typed Router). wtr is a trie-based router for OCaml HTTP web applications.

v2.0.0 release adds support for specifying and matching HTTP methods in a r= outer. So now we can do the following; 

Wtr.(
    create
      [ {%wtr| get,post,head,delete =
 ; /home/about/  |} about_page
      ; {%wtr| head                 =
 ; /home/:int/   |} prod_page
      ]

Note: we can specify single or multiple HTTP methods supported by a route.

The release also features a pretty-printer - Wtr.pp - for a Wtr.t type. This has proven to be very useful when diagnosing/understanding routing issues. Sample outp= ut below, 

POST
  /home
    /about
      /
    /:float
      /
HEAD
  /home
    /about
      /
    /:int
      /

The manual has also been improved in this release.

New playlist just dropped

Archive: https://discuss.ocaml.org/t/new-playlist-just-dropped/8272/1

Rahul announced

Haven't watched them all yet, but these look like they'd be a great resourc= e for anyone wanting to learn OCaml: https://www.youtube.com/watch?v=3DMUcka_SvhLw&= amp;list=3DPLre5AT9JnKShBOPeuiD9b-I4XROIJhkIU

Other OCaml News

From the ocamlcore planet blog

Here are links from many OCaml blogs aggregated at OCaml Planet.

Old CWN

If you happen to miss a CWN, you can send me a message and I'll mail it to you, or go take a loo= k at the archive or the <= a href=3D"https://alan.petitepomme.net/cwn/cwn.rss">RSS feed of the archive= s.

If you also wish to receive it every week by mail, you may subscribe online.

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