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[scrape.yml] New OCaml Planet blog posts and videos from watch.ocaml.org
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| title: OCaml Weekly News, 03 Dec 2024 | ||
| description: | ||
| url: https://alan.petitepomme.net/cwn/2024.12.03.html | ||
| date: 2024-12-03T12:00:00-00:00 | ||
| preview_image: | ||
| authors: | ||
| - Caml Weekly News | ||
| source: | ||
| --- | ||
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| <ol><li><a href="https://alan.petitepomme.net/cwn/2024.12.03.html#1">Good example of handwritten Lexer + Recursive Descent Parser?</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.03.html#2">Boulder Dash in OCaml</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.03.html#3">Js_of_ocaml 5.9.0</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.03.html#4">Liquidsoap 2.3.0</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.03.html#5">Bytesrw 0.1.0 – Composable byte stream readers and writers</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.03.html#6">dream-html and pure-html 3.5.2</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.03.html#7">Second beta release of OCaml 5.3.0</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.03.html#8">New release of Monolith</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.03.html#9">Jsont 0.1.0 – Declarative JSON data manipulation for OCaml</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.03.html#10">Tiny educational concurrent I/O and promises library</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.03.html#11">Eliom 11.1: Towards Web Assembly support</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.03.html#12">Areas and Adversaries</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.03.html#13">MariaDB 1.2.0</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.03.html#14">Proposed Package Archiving Policy for the opam Repository</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.03.html#15">capnp-rpc 2.0</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.03.html#16">Other OCaml News</a></li></ol> |
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| title: OCaml Weekly News, 05 Nov 2024 | ||
| description: | ||
| url: https://alan.petitepomme.net/cwn/2024.11.05.html | ||
| date: 2024-11-05T12:00:00-00:00 | ||
| preview_image: | ||
| authors: | ||
| - Caml Weekly News | ||
| source: | ||
| --- | ||
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| <ol><li><a href="https://alan.petitepomme.net/cwn/2024.11.05.html#1">GPTar 1.0.0</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.05.html#2">opam 2.3.0~rc1</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.05.html#3">Call for Contributions: BOB 2025 (Berlin, March 14 - Deadline Nov 15)</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.05.html#4">First beta release for OCaml 5.3.0</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.05.html#5">dune 3.16</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.05.html#6">Other OCaml News</a></li></ol> |
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| title: OCaml Weekly News, 08 Oct 2024 | ||
| description: | ||
| url: https://alan.petitepomme.net/cwn/2024.10.08.html | ||
| date: 2024-10-08T12:00:00-00:00 | ||
| preview_image: | ||
| authors: | ||
| - Caml Weekly News | ||
| source: | ||
| --- | ||
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| <ol><li><a href="https://alan.petitepomme.net/cwn/2024.10.08.html#1">Releases of fpath-sexplib0, fpath-base, loc, file-rewriter, sexps-rewriter and provider</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.08.html#2">Build a project without Stdlib</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.08.html#3">obatcher: Framework for building efficient concurrent services</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.08.html#4">DBLP query program and library</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.08.html#5">cudajit: Bindings to the ~cuda~ and ~nvrtc~ libraries</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.08.html#6">YOCaml, a framework for static site generator</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.08.html#7">oepub 0.1.0 : A library to parse epub files</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.08.html#8">ppx_deriving_router — type safe routing for Dream and Melange</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.08.html#9">Mica, a PPX that automates differential testing for OCaml modules</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.08.html#10">Simplified Android cross-compiler with DkML</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.08.html#11">Other OCaml News</a></li></ol> |
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| title: OCaml Weekly News, 10 Dec 2024 | ||
| description: | ||
| url: https://alan.petitepomme.net/cwn/2024.12.10.html | ||
| date: 2024-12-10T12:00:00-00:00 | ||
| preview_image: | ||
| authors: | ||
| - Caml Weekly News | ||
| source: | ||
| --- | ||
|
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| <ol><li><a href="https://alan.petitepomme.net/cwn/2024.12.10.html#1">Release of cppo 1.8.0</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.10.html#2">New releases of Merlin and OCaml-LSP</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.10.html#3">New release of baby</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.10.html#4">Release of Saturn 1.0</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.10.html#5">Dune dev meeting</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.10.html#6">Dune 3.17</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.10.html#7">Spec and interface to declare dependencies in an OCaml script</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.12.10.html#8">Other OCaml News</a></li></ol> |
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| title: OCaml Weekly News, 12 Nov 2024 | ||
| description: | ||
| url: https://alan.petitepomme.net/cwn/2024.11.12.html | ||
| date: 2024-11-12T12:00:00-00:00 | ||
| preview_image: | ||
| authors: | ||
| - Caml Weekly News | ||
| source: | ||
| --- | ||
|
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| <ol><li><a href="https://alan.petitepomme.net/cwn/2024.11.12.html#1">Picos — Interoperable effects based concurrency</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.12.html#2">findlib-1.9.7</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.12.html#3">First release candidate for OCaml 5.2.1</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.12.html#4">mirage-swapfs</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.12.html#5">Dune dev meeting</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.12.html#6">Other OCaml News</a></li></ol> |
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| title: OCaml Weekly News, 15 Oct 2024 | ||
| description: | ||
| url: https://alan.petitepomme.net/cwn/2024.10.15.html | ||
| date: 2024-10-15T12:00:00-00:00 | ||
| preview_image: | ||
| authors: | ||
| - Caml Weekly News | ||
| source: | ||
| --- | ||
|
|
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| <ol><li><a href="https://alan.petitepomme.net/cwn/2024.10.15.html#1">grep_cmt: structural search of OCaml code</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.15.html#2">Mutaml 0.1</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.15.html#3">ocaml-activitypub</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.15.html#4">Ortac/QCheck-STM 0.4.0 Dynamic formal verification beyond one system under test</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.15.html#5">Openbsd 1.0</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.15.html#6">Compsort - reorder files in archives for improved compression</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.15.html#7">Dune dev meeting</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.15.html#8">Other OCaml News</a></li></ol> |
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| title: OCaml Weekly News, 19 Nov 2024 | ||
| description: | ||
| url: https://alan.petitepomme.net/cwn/2024.11.19.html | ||
| date: 2024-11-19T12:00:00-00:00 | ||
| preview_image: | ||
| authors: | ||
| - Caml Weekly News | ||
| source: | ||
| --- | ||
|
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| <ol><li><a href="https://alan.petitepomme.net/cwn/2024.11.19.html#1">Boulder Dash in OCaml</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.19.html#2">Jane Street OCaml extensions – now with developer tooling!</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.19.html#3">opam 2.3.0 is out!</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.19.html#4">Installing Developer Tools with Dune</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.19.html#5">Dune Developer Preview Updates</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.19.html#6">First release of cmdlang</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.19.html#7">findlib-1.9.8</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.19.html#8">Testo 0.1.0 - a new testing framework for OCaml</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.19.html#9">Other OCaml News</a></li></ol> |
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| title: OCaml Weekly News, 22 Oct 2024 | ||
| description: | ||
| url: https://alan.petitepomme.net/cwn/2024.10.22.html | ||
| date: 2024-10-22T12:00:00-00:00 | ||
| preview_image: | ||
| authors: | ||
| - Caml Weekly News | ||
| source: | ||
| --- | ||
|
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| <ol><li><a href="https://alan.petitepomme.net/cwn/2024.10.22.html#1">opam 2.3.0~beta1</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.22.html#2">Dune dev meeting</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.22.html#3">Wildcard expansion on Windows</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.22.html#4">OCamlformat and GitHub actions</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.22.html#5">New vs. Old OCaml Academic Users Page Survey</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.22.html#6">New vs. Old OCaml Industrial Users Page</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.22.html#7">Eliom 11 and Ocsigen Start 7</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.22.html#8">Other OCaml News</a></li></ol> |
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| title: OCaml Weekly News, 26 Nov 2024 | ||
| description: | ||
| url: https://alan.petitepomme.net/cwn/2024.11.26.html | ||
| date: 2024-11-26T12:00:00-00:00 | ||
| preview_image: | ||
| authors: | ||
| - Caml Weekly News | ||
| source: | ||
| --- | ||
|
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| <ol><li><a href="https://alan.petitepomme.net/cwn/2024.11.26.html#1">OCaml 5.2.1 released</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.26.html#2">smaws preview release, an AWS SDK for OCaml using eio</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.26.html#3">ppx_deriving_ezjsonm</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.26.html#4">FUN OCaml now has a YouTube Channel</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.26.html#5">Terrateam's open source Ocaml repository</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.26.html#6">OUPS december 2024</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.26.html#7">Dune dev meeting</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.11.26.html#8">Other OCaml News</a></li></ol> |
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| title: OCaml Weekly News, 29 Oct 2024 | ||
| description: | ||
| url: https://alan.petitepomme.net/cwn/2024.10.29.html | ||
| date: 2024-10-29T12:00:00-00:00 | ||
| preview_image: | ||
| authors: | ||
| - Caml Weekly News | ||
| source: | ||
| --- | ||
|
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| <ol><li><a href="https://alan.petitepomme.net/cwn/2024.10.29.html#1">HOL Light released to OPAM</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.29.html#2">Could we add a tiny OCaml interpreter to Numworks graphical calculators?</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.29.html#3">opam 2.3.0~beta2</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.29.html#4">Editors dev-meeting #4, Thu. 31th: Search by type à la Sherlodoc 🕵️</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.29.html#5">Dune dev meeting</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.29.html#6">Shell Completions in Dune Developer Preview</a></li><li><a href="https://alan.petitepomme.net/cwn/2024.10.29.html#7">Other OCaml News</a></li></ol> |
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| title: Happy eyeballs?! | ||
| description: | ||
| url: https://blog.osau.re/articles/happy_eyeballs.html | ||
| date: 2024-09-27T00:00:00-00:00 | ||
| preview_image: | ||
| authors: | ||
| - Romain Calascibetta | ||
| source: | ||
| --- | ||
|
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| When connect() hides a lot of details. |
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| title: Introducing tree-sitter-dune | ||
| description: | ||
| url: http://blog.emillon.org/posts/2024-07-26-introducing-tree-sitter-dune.html | ||
| date: 2024-07-26T00:00:00-00:00 | ||
| preview_image: | ||
| authors: | ||
| - Etienne Millon | ||
| source: | ||
| --- | ||
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| <p>I made a <a href="https://tree-sitter.github.io/tree-sitter/">tree-sitter</a> plugin for | ||
| <code>dune</code> files. It is available <a href="https://github.com/emillon/tree-sitter-dune">on | ||
| GitHub</a>.</p> | ||
| <p>Tree-sitter is a parsing system that can be used in text editors. | ||
| <a href="https://dune.build/">Dune</a> is a build system for OCaml projects. | ||
| Its configuration language lives in <code>dune</code> files which use a s-expression | ||
| syntax.</p> | ||
| <p>This makes highlighting challenging: the lexing part of the language is very | ||
| simple (atoms, strings, parentheses), but it is not enough to make a good | ||
| highlighter.</p> | ||
| <p>In the following example, <code>with-stdout-to</code> and <code>echo</code> are “actions” that we | ||
| could highlight in a special way, but these names can also appear in places | ||
| where they are not interpreted as actions, and doing so would be confusing (for | ||
| example, we could write to a file named <code>echo</code> instead of <code>foo.txt</code>.</p> | ||
| <div class="sourceCode"><pre class="sourceCode scheme"><code class="sourceCode scheme"><span><a href="http://blog.emillon.org/feeds/ocaml.xml#cb1-1" aria-hidden="true" tabindex="-1"></a>(rule</span> | ||
| <span><a href="http://blog.emillon.org/feeds/ocaml.xml#cb1-2" aria-hidden="true" tabindex="-1"></a> (action</span> | ||
| <span><a href="http://blog.emillon.org/feeds/ocaml.xml#cb1-3" aria-hidden="true" tabindex="-1"></a> (with-stdout-to</span> | ||
| <span><a href="http://blog.emillon.org/feeds/ocaml.xml#cb1-4" aria-hidden="true" tabindex="-1"></a> foo.txt</span> | ||
| <span><a href="http://blog.emillon.org/feeds/ocaml.xml#cb1-5" aria-hidden="true" tabindex="-1"></a> (echo <span class="st">"testing"</span>))))</span></code></pre></div> | ||
| <p>Tree-sitter solves this, because it creates an actual parser that goes beyond | ||
| lexing.</p> | ||
| <p>In this example, I created grammar rules that parse the contents of <code>(action ...)</code> as an action, recognizing the various constructs of this DSL.</p> | ||
| <p>The output of the parser is this syntax tree with location information (for | ||
| some reason, line numbers start at 0 which is normal and unusual at the same | ||
| time).</p> | ||
| <pre><code>(source_file [0, 0] - [5, 0] | ||
| (stanza [0, 0] - [4, 22] | ||
| (stanza_name [0, 1] - [0, 5]) | ||
| (field_name [1, 2] - [1, 8]) | ||
| (action [2, 2] - [4, 20] | ||
| (action_name [2, 3] - [2, 17]) | ||
| (file_name_target [3, 3] - [3, 10] | ||
| (file_name [3, 3] - [3, 10])) | ||
| (action [4, 3] - [4, 19] | ||
| (action_name [4, 4] - [4, 8]) | ||
| (quoted_string [4, 9] - [4, 18])))))</code></pre> | ||
| <p>The various strings are annotated with their type: we have stanza names | ||
| (<code>rule</code>), field names (<code>action</code>), action names (<code>with-stdout-to</code>, <code>echo</code>), file | ||
| names (<code>foo.txt</code>), and plain strings (<code>"testing"</code>).</p> | ||
| <p>By itself, that is not useful, but it’s possible to write <em>queries</em> to make | ||
| this syntax tree do interesting stuff.</p> | ||
| <p>The first one is highlighting: we can set styles for various “patterns” (in | ||
| practice, I only used node names) by defining queries:</p> | ||
| <div class="sourceCode"><pre class="sourceCode scheme"><code class="sourceCode scheme"><span><a href="http://blog.emillon.org/feeds/ocaml.xml#cb3-1" aria-hidden="true" tabindex="-1"></a>(stanza_name) @function</span> | ||
| <span><a href="http://blog.emillon.org/feeds/ocaml.xml#cb3-2" aria-hidden="true" tabindex="-1"></a>(field_name) @property</span> | ||
| <span><a href="http://blog.emillon.org/feeds/ocaml.xml#cb3-3" aria-hidden="true" tabindex="-1"></a>(quoted_string) @string</span> | ||
| <span><a href="http://blog.emillon.org/feeds/ocaml.xml#cb3-4" aria-hidden="true" tabindex="-1"></a>(multiline_string) @string</span> | ||
| <span><a href="http://blog.emillon.org/feeds/ocaml.xml#cb3-5" aria-hidden="true" tabindex="-1"></a>(action_name) @keyword</span></code></pre></div> | ||
| <p>The parts with <code>@</code> map to “highlight groups” used in text editors.</p> | ||
| <p>Another type of query is called “injections”. It is used to link different | ||
| types of grammars together. For example, <code>dune</code> files can start with a special | ||
| comment that indicates that the rest of the file is an OCaml program. In that | ||
| case, the parser emits a single <code>ocaml_syntax</code> node and the following injection | ||
| indicates that this file should be parsed using an OCaml parser:</p> | ||
| <div class="sourceCode"><pre class="sourceCode scheme"><code class="sourceCode scheme"><span><a href="http://blog.emillon.org/feeds/ocaml.xml#cb4-1" aria-hidden="true" tabindex="-1"></a>((ocaml_syntax) @injection.content</span> | ||
| <span><a href="http://blog.emillon.org/feeds/ocaml.xml#cb4-2" aria-hidden="true" tabindex="-1"></a> (#<span class="kw">set!</span> injection.language <span class="st">"ocaml"</span>))</span></code></pre></div> | ||
| <p>Another use case for this is <code>system</code> actions: these strings in <code>dune</code> files | ||
| could be interpreted using a shell parser.</p> | ||
| <p>In the other direction, it is possible to inject <code>dune</code> files into another | ||
| document. For example, a markdown parser can use injections to highlight code | ||
| blocks.</p> | ||
| <p>I’m happy to have explored this technology. The toolchain seemed complex at | ||
| first: there’s a compiler which seems to be a mix of node and rust, which | ||
| generates C, which is compiled into a dynamically loaded library; but this is | ||
| actually pretty well integrated in nix and neovim to the details are made | ||
| invisible.</p> | ||
| <p>The testing mechanism is similar to the cram tests we use in Dune, but I was a | ||
| bit confused with the colors at first: when the output of a test changes, Dune | ||
| considers that the new output is a <code>+</code> in the diff, and highlights it in green; | ||
| while tree-sitter considers that the “expected output” is green.</p> | ||
| <p>There are many ways to improve this prototype: either by adding queries (it’s | ||
| possible to define text objects, folding expressions, etc), or by improving | ||
| coverage for <code>dune</code> files (in most cases, the parser uses a s-expression | ||
| fallback). I’m also curious to see if it’s possible to use this parser to | ||
| provide a completion source. Since the strings are tagged with their type (are | ||
| we expecting a library name, a module name, etc), I think we could use that to | ||
| provide context-specific completions, but that’s probably difficult to do.</p> | ||
| <p>Thanks <a href="https://x.com/teej_dv">teej</a> for the initial idea and the useful | ||
| resources.</p> |
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