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                OCaml News 2023/5/15
            
            
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            May 15, 2023
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    <h1 id="二〇二三年五月九日-二〇二三年五月十五日"><a href="#二〇二三年五月九日-二〇二三年五月十五日" class="headerlink" title="二〇二三年五月九日 - 二〇二三年五月十五日"></a>二〇二三年五月九日 - 二〇二三年五月十五日</h1><h2 id="关于OCaml最新的并行特性相关文档"><a href="#关于OCaml最新的并行特性相关文档" class="headerlink" title="关于OCaml最新的并行特性相关文档"></a>关于OCaml最新的并行特性相关文档</h2><ol>
<li>Eio的README有很多例子: <a target="_blank" rel="noopener" href="https://github.com/ocaml-multicore/eio">https://github.com/ocaml-multicore/eio</a></li>
<li>ocaml-multicore组织官方的教程仓库: <a target="_blank" rel="noopener" href="https://github.com/ocaml-multicore/parallel-programming-in-multicore-ocaml">https://github.com/ocaml-multicore/parallel-programming-in-multicore-ocaml</a></li>
<li>OCaml的Manual: <a target="_blank" rel="noopener" href="https://v2.ocaml.org/releases/5.0/htmlman/parallelism.html">https://v2.ocaml.org/releases/5.0/htmlman/parallelism.html</a></li>
</ol>
<p>论坛原帖: <a target="_blank" rel="noopener" href="https://discuss.ocaml.org/t/new-concurrency-features/12158">https://discuss.ocaml.org/t/new-concurrency-features/12158</a></p>
<h2 id="使用OCaml通过串口与STM32通信"><a href="#使用OCaml通过串口与STM32通信" class="headerlink" title="使用OCaml通过串口与STM32通信"></a>使用OCaml通过串口与STM32通信</h2><p>在Linux&#x2F;Unix上可以:</p>
<ul>
<li>适用于linux&#x2F;unix的oserial: <a target="_blank" rel="noopener" href="https://github.com/m-laniakea/oserial">https://github.com/m-laniakea/oserial</a></li>
<li>直接打开 <code>/dev/XXX</code> 文件用Unix模块相关的API与其交互， 一个例子: <a target="_blank" rel="noopener" href="https://gist.github.com/dbuenzli/035bc5c8598069360dd7301f55e7774a">https://gist.github.com/dbuenzli/035bc5c8598069360dd7301f55e7774a</a></li>
</ul>
<p>Windows目前没有解决方案。</p>
<p>论坛原帖: <a target="_blank" rel="noopener" href="https://discuss.ocaml.org/t/is-there-any-library-of-ocaml-to-use-serial-port-of-pc/3658">https://discuss.ocaml.org/t/is-there-any-library-of-ocaml-to-use-serial-port-of-pc/3658</a></p>
<h2 id="使用OCaml构建IOS-APP"><a href="#使用OCaml构建IOS-APP" class="headerlink" title="使用OCaml构建IOS APP"></a>使用OCaml构建IOS APP</h2><ul>
<li>通过Js_of_ocaml编译为JavaScript并使用像CapacitorJS（甚至是旧的Cordova）这样的框架或许是一条路子。</li>
<li><a target="_blank" rel="noopener" href="http://psellos.com/aboutus.html">Psellos</a>是一个注重现代函数式语言(OCaml, F#, Haskell)的组织，它们维护了一个将OCaml编译到IOS的交叉编译器: <a target="_blank" rel="noopener" href="http://psellos.com/ocaml/compile-to-iphone.html">http://psellos.com/ocaml/compile-to-iphone.html</a></li>
<li>ocaml-cocoa的demo: <a target="_blank" rel="noopener" href="https://github.com/dboris/ocaml-cocoa/blob/master/examples/count_clicks.ml">https://github.com/dboris/ocaml-cocoa/blob/master/examples/count_clicks.ml</a></li>
</ul>
<p>论坛原帖: <a target="_blank" rel="noopener" href="https://discuss.ocaml.org/t/building-ios-apps-with-ocaml/12153">https://discuss.ocaml.org/t/building-ios-apps-with-ocaml/12153</a></p>
<h2 id="Ahref现在使用Melange构建"><a href="#Ahref现在使用Melange构建" class="headerlink" title="Ahref现在使用Melange构建"></a>Ahref现在使用Melange构建</h2><p><a href="">Melange</a>是结合使用 OCaml 和 Reason 生成 JavaScript 的工具组合。<br><a target="_blank" rel="noopener" href="https://ahrefs.com/">Ahrefs</a>是一个SEO软件套装，包含外链建设、关键字研究、竞争对手分析，排名跟踪和站点审核等工具。Ahrefs内部的大多数功能都是为营销专业人员设计的。</p>
<p>自去年 9 月以来，Melange、Dune 和 Ahrefs 开发团队一直致力于加强 Dune 和 Melange 之间的集成。作为一家在后端使用大量 OCaml 的公司，Ahrefs看到了Melange可以将其前端技术栈与OCaml更紧密结合(通过使用Melange与UI相关的JavaScript生态系统集成)。因此，该公司决定投资并积极参与以实现这种整合。</p>
<p>论坛原帖: <a target="_blank" rel="noopener" href="https://discuss.ocaml.org/t/ahrefs-is-now-built-with-melange/12107">https://discuss.ocaml.org/t/ahrefs-is-now-built-with-melange/12107</a></p>
<h2 id="Ahref正在招聘OCaml开发人员"><a href="#Ahref正在招聘OCaml开发人员" class="headerlink" title="Ahref正在招聘OCaml开发人员"></a>Ahref正在招聘OCaml开发人员</h2><p>一如既往，Ahrefs正在寻找OCaml开发人员，他们总部位于新加坡，团队遍布各地，所以也支持远程，详见:<br><a target="_blank" rel="noopener" href="https://ahrefs.com/jobs/ocaml-developer">https://ahrefs.com/jobs/ocaml-developer</a></p>
<p>论坛原帖: <a target="_blank" rel="noopener" href="https://discuss.ocaml.org/t/ahrefs-is-hiring/12136">https://discuss.ocaml.org/t/ahrefs-is-hiring/12136</a></p>
<h2 id="string-literals-inside-comments-5745"><a href="#string-literals-inside-comments-5745" class="headerlink" title="string literals inside comments #5745"></a>string literals inside comments #5745</h2><p>草，OCaml的parser不会忽略注释中的引号：</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line">$ echo &#x27;(* &quot;test *)&#x27; | ocaml </span><br><span class="line">OCaml version 5.0.0</span><br><span class="line">Enter #help;; for help.</span><br><span class="line"></span><br><span class="line"># (* &quot;test *)tive `utop_prompt_fancy_light&#x27;.</span><br><span class="line"># * </span><br><span class="line">Error: This comment contains an unterminated string literal</span><br><span class="line">Line 1, characters 3-4:   String literal begins here</span><br><span class="line"># </span><br></pre></td></tr></table></figure>

<p>而经过讨论认为修复这个问题是向后不兼容的，所以修复这个词法分析器错误的风险似乎大于好处，就给close了。</p>
<p>相关issue: <a target="_blank" rel="noopener" href="https://github.com/ocaml/ocaml/issues/5745">https://github.com/ocaml/ocaml/issues/5745</a></p>
<p>有趣的是F#也继承了这个问题:</p>
<figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line">$ echo &#x27;(* &quot;test *)&#x27; | dotnet fsi</span><br><span class="line"></span><br><span class="line">Microsoft (R) F# Interactive version 12.5.0.0 for F# 7.0</span><br><span class="line">Copyright (c) Microsoft Corporation. All Rights Reserved.</span><br><span class="line"></span><br><span class="line">For help type #help;;</span><br><span class="line"></span><br><span class="line">&gt; </span><br><span class="line">  (* &quot;test *)</span><br><span class="line">  ^^</span><br><span class="line"></span><br><span class="line">/home/muqiu-han/stdin(1,1): error FS0517: End of file in string embedded in comment begun at or before here</span><br></pre></td></tr></table></figure>


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