Add paypal button

Assets/paypal-button.html

@@ -0,0 +1,22 @@
+<style>
+    .btn {
+      border-radius: 5px;
+      background-color: #4f73e8;
+      border: #4f73e8;
+      opacity: 1;
+      transition: 0.3s;
+    }
+
+    .btn:hover {
+      background-color: #2144b6;
+      border: #2144b6;
+    }
+  </style>
+
+
+  <a href="https://www.paypal.com/donate/?business=D58J5LFEERC3N&no_recurring=0&item_name=These+donations+make+it+possible+for+me+to+continue+writing+new+and+useful+content+for+our+community%F0%9F%98%89+Thank+you%21%E2%9D%A4%EF%B8%8F%F0%9F%A5%B3&currency_code=USD">
+      <button class="btn btn-primary" type="button">
+      Donate via PayPal 💵
+      </button>
+  </a>
+

_freeze/index/execute-results/html.json

@@ -1,8 +1,8 @@
 {
-  "hash": "2d8dece2d9f600988e9fda0011b41fde",
+  "hash": "8b966c7bc342726beb6132213e9a4676",
   "result": {
     "engine": "knitr",
-    "markdown": "---\nengine: knitr\nknitr: true\nsyntax-definition: \"./Assets/zig.xml\"\n---\n\n\n\n\n\n\n\n\n\n::: {.content-visible when-format=\"html\"}\n\n# Welcome {.unnumbered}\n\nWelcome! This is the initial page for the \"Open Access\" HTML version of the book \"Introduction to Zig: a project-based book\",\nwritten by [Pedro Duarte Faria](https://pedro-faria.netlify.app/).\nThis is an open book that provides an introduction to the [Zig programming language](https://ziglang.org/),\nwhich is a new general-purpose, and low-level language for building robust and optimal software.\n\n## Support the project! {.unnumbered}\n\nIf you like this project, and you want to support it, you can buy an eBook or a physical copy\nof the book on Amazon (link below). This is a good way to support directly the author of the project, which helps to foster\nmore contents like this, and it makes possible for the author to keep writing helpful tools and\nmaterials for the community.\n\n\n<style>\n  .btn {\n    border-radius: 5px;\n    background-color: #4f73e8;\n    border: #4f73e8;\n    opacity: 1;\n    transition: 0.3s;\n  }\n\n  .btn:hover {\n    background-color: #2144b6;\n    border: #2144b6;\n  }\n</style>\n\n\n<a href=\"https://www.amazon.com/dp/B0DJYMDRLP\">\n    <button class=\"btn btn-primary\" type=\"button\">\n\tBuy the book on Amazon!\n    </button>\n</a>\n\n\n\n:::\n\n\n## About this book {.unnumbered}\n\nThis an open (i.e. it is open-source), technical and introductory book for the [Zig programming language](https://ziglang.org/),\nwhich is a new general purpose, and low-level programming language for building optimal and robust software.\n\nOfficial repository of the book: <https://github.com/pedropark99/zig-book>.\n\nThis book is designed for both beginners and experienced developers. It explores the exciting world of Zig through small\nand simple projects (in a similar style to the famous \"Python Crash Course\" book from Eric Matthes).\nSome of these projects are: a Base64 encoder/decoder, a HTTP Server and an image filter.\n\nAs you work through the book, you will learn:\n\n- The syntax of the language, and how it compares to C, C++ and Rust.\n- Data structures, memory allocators, filesystem and I/O.\n- Optionals as a new paradigm to handle nullability.\n- How to test and debug a Zig application.\n- Errors as values, and how to handle them.\n- How to build C and Zig code with the build system that is embedded into the language.\n- Zig interoperability with C.\n- Parallelism with threads and SIMD.\n- And more.\n\n\n## About the author {.unnumbered}\n\nPedro Duarte Faria have a bachelor degree in Economics from Federal University of Ouro Preto - Brazil.\nCurrently, he is a Data Platform Engineer at [Blip](https://www.blip.ai/en/)[^blip], and\nan Associate Developer for Apache Spark 3.0 certified by Databricks.\n\n[^blip]: <https://www.blip.ai/en/>\n\n\nThe author have more than 4 years of experience in the data industry. Developing data products, pipelines,\nreports and analysis for research institutions and some of the largest companies in the\nbrazilian financial sector, such as the BMG Bank, Sodexo and Pan Bank.\n\nBut Pedro is also a passionate software developer that loves to\nlearn and teach about programming.\nAlthough Pedro uses many different languages in his work, he is specialized in the R programming language, and have given several\nlectures and courses about it, inside graduate centers (such as PPEA-UFOP^[<https://ppea.ufop.br/>]),\nin addition to federal and state organizations (such as FJP-MG^[<http://fjp.mg.gov.br/>]).\n\n\nPersonal Website: <https://pedro-faria.netlify.app/>\n\nLinkedin: <https://www.linkedin.com/in/pedro-faria-a68140209/>\n\nMastodon: [\\@pedropark99\\@fosstodon.org](https://fosstodon.org/@pedropark99)\n\nTwitter (X): [\\@PedroPark9](https://twitter.com/PedroPark9)\n\n## License {.unnumbered}\n\nCopyright © 2024 Pedro Duarte Faria. This book is licensed by the [CC-BY 4.0 Creative Commons Attribution 4.0 International Public License](https://creativecommons.org/licenses/by/4.0/)[^cc-license].\n\n[^cc-license]: <https://creativecommons.org/licenses/by/4.0/>\n\n![](Figures/creative-commoms-88x31.png){width=88px}\n\n\n## Book compilation metadata {.unnumbered}\n\nThis book was compiled using the following versions of [Zig](https://ziglang.org) and [Quarto](https://quarto.org):\n\n\n\n\n\n- System version: Linux, 6.8.0-45-generic, NA, x86_64.\n- Zig version: 0.14.0-dev.1166+bb7050106.\n- Quarto version: 1.5.56.\n\n\n\n\n\n## Book citation {.unnumbered}\n\nYou can use the following BibTex entry to cite this book:\n\n```\n@book{pedro2024,\n    author = {Pedro Duarte Faria},\n    title = {Introduction to Zig},\n    subtitle = {a project-based book},\n    month = {October},\n    edition = {1},\n    year = {2024},\n    address = {Belo Horizonte},\n    url = {https://github.com/pedropark99/zig-book}\n}\n```\n\n## Corresponding author and maintainer {.unnumbered}\n\nPedro Duarte Faria\n\nContact: [pedropark99\\@gmail.com](mailto:[email protected])\n\nPersonal website: <https://pedro-faria.netlify.app/>\n\n\n## Acknowledgments {.unnumbered}\n\nThis book is also a product of many conversations and exchanges that we had\nwith different people from the Zig community. I (Pedro Duarte Faria) am incredibly\ngrateful for these conversations, and also, for some direct contributions that we\nhad. Below we have a list of the people involved (name of the person with their usename in GitHub):\n\n\n\n\n\nCalin Martinconi (\\@martinconic), Steffen Roller (\\@sroller), Chris Boesch (\\@chrboesch), Lv Sihan (\\@Pokryton), saurabh sharma. (\\@esskayesss), slackline (\\@slackline), Markus Kurz (\\@kurz-m), Rubin Simons (\\@rubin55)\n",
+    "markdown": "---\nengine: knitr\nknitr: true\nsyntax-definition: \"./Assets/zig.xml\"\n---\n\n\n\n\n\n\n::: {.content-visible when-format=\"html\"}\n\n# Welcome {.unnumbered}\n\nWelcome! This is the initial page for the \"Open Access\" HTML version of the book \"Introduction to Zig: a project-based book\",\nwritten by [Pedro Duarte Faria](https://pedro-faria.netlify.app/).\nThis is an open book that provides an introduction to the [Zig programming language](https://ziglang.org/),\nwhich is a new general-purpose, and low-level language for building robust and optimal software.\n\n## Support the project! {.unnumbered}\n\nIf you like this project, and you want to support it, you can buy an eBook or a physical copy\nof the book on Amazon:\n\n<style>\n  .btn {\n    border-radius: 5px;\n    background-color: #4f73e8;\n    border: #4f73e8;\n    opacity: 1;\n    transition: 0.3s;\n  }\n\n  .btn:hover {\n    background-color: #2144b6;\n    border: #2144b6;\n  }\n</style>\n\n\n<a href=\"https://www.amazon.com/dp/B0DJYMDRLP\">\n    <button class=\"btn btn-primary\" type=\"button\">\n\tBuy the book on Amazon!\n    </button>\n</a>\n\n\n\nBut you can also donate some amount directly to the author of the project via PayPal Donation:\n\n<style>\n    .btn {\n      border-radius: 5px;\n      background-color: #4f73e8;\n      border: #4f73e8;\n      opacity: 1;\n      transition: 0.3s;\n    }\n  \n    .btn:hover {\n      background-color: #2144b6;\n      border: #2144b6;\n    }\n  </style>\n  \n  \n  <a href=\"https://www.paypal.com/donate/?business=D58J5LFEERC3N&no_recurring=0&item_name=These+donations+make+it+possible+for+me+to+continue+writing+new+and+useful+content+for+our+community%F0%9F%98%89+Thank+you%21%E2%9D%A4%EF%B8%8F%F0%9F%A5%B3&currency_code=USD\">\n      <button class=\"btn btn-primary\" type=\"button\">\n      Donate via PayPal 💵\n      </button>\n  </a>\n  \n\n\n\nThese are good ways to support directly the author of the project, which helps to foster\nmore contents like this, and it makes possible for the author to keep writing helpful tools and\nmaterials for the community.\n\n:::\n\n\n## About this book {.unnumbered}\n\nThis an open (i.e. it is open-source), technical and introductory book for the [Zig programming language](https://ziglang.org/),\nwhich is a new general purpose, and low-level programming language for building optimal and robust software.\n\nOfficial repository of the book: <https://github.com/pedropark99/zig-book>.\n\nThis book is designed for both beginners and experienced developers. It explores the exciting world of Zig through small\nand simple projects (in a similar style to the famous \"Python Crash Course\" book from Eric Matthes).\nSome of these projects are: a Base64 encoder/decoder, a HTTP Server and an image filter.\n\nAs you work through the book, you will learn:\n\n- The syntax of the language, and how it compares to C, C++ and Rust.\n- Data structures, memory allocators, filesystem and I/O.\n- Optionals as a new paradigm to handle nullability.\n- How to test and debug a Zig application.\n- Errors as values, and how to handle them.\n- How to build C and Zig code with the build system that is embedded into the language.\n- Zig interoperability with C.\n- Parallelism with threads and SIMD.\n- And more.\n\n\n## About the author {.unnumbered}\n\nPedro Duarte Faria have a bachelor degree in Economics from Federal University of Ouro Preto - Brazil.\nCurrently, he is a Data Platform Engineer at [Blip](https://www.blip.ai/en/)[^blip], and\nan Associate Developer for Apache Spark 3.0 certified by Databricks.\n\n[^blip]: <https://www.blip.ai/en/>\n\n\nThe author have more than 4 years of experience in the data industry. Developing data products, pipelines,\nreports and analysis for research institutions and some of the largest companies in the\nbrazilian financial sector, such as the BMG Bank, Sodexo and Pan Bank.\n\nBut Pedro is also a passionate software developer that loves to\nlearn and teach about programming.\nAlthough Pedro uses many different languages in his work, he is specialized in the R programming language, and have given several\nlectures and courses about it, inside graduate centers (such as PPEA-UFOP^[<https://ppea.ufop.br/>]),\nin addition to federal and state organizations (such as FJP-MG^[<http://fjp.mg.gov.br/>]).\n\n\nPersonal Website: <https://pedro-faria.netlify.app/>\n\nLinkedin: <https://www.linkedin.com/in/pedro-faria-a68140209/>\n\nMastodon: [\\@pedropark99\\@fosstodon.org](https://fosstodon.org/@pedropark99)\n\nTwitter (X): [\\@PedroPark9](https://twitter.com/PedroPark9)\n\n## License {.unnumbered}\n\nCopyright © 2024 Pedro Duarte Faria. This book is licensed by the [CC-BY 4.0 Creative Commons Attribution 4.0 International Public License](https://creativecommons.org/licenses/by/4.0/)[^cc-license].\n\n[^cc-license]: <https://creativecommons.org/licenses/by/4.0/>\n\n![](Figures/creative-commoms-88x31.png){width=88px}\n\n\n## Book compilation metadata {.unnumbered}\n\nThis book was compiled using the following versions of [Zig](https://ziglang.org) and [Quarto](https://quarto.org):\n\n\n- System version: Windows, 10 x64, NA, x86-64.\n- Zig version: 0.14.0-dev.1569+b56a667ec.\n- Quarto version: 1.4.554.\n\n\n## Book citation {.unnumbered}\n\nYou can use the following BibTex entry to cite this book:\n\n```\n@book{pedro2024,\n    author = {Pedro Duarte Faria},\n    title = {Introduction to Zig},\n    subtitle = {a project-based book},\n    month = {October},\n    edition = {1},\n    year = {2024},\n    address = {Belo Horizonte},\n    url = {https://github.com/pedropark99/zig-book}\n}\n```\n\n## Corresponding author and maintainer {.unnumbered}\n\nPedro Duarte Faria\n\nContact: [pedropark99\\@gmail.com](mailto:[email protected])\n\nPersonal website: <https://pedro-faria.netlify.app/>\n\n\n## Acknowledgments {.unnumbered}\n\nThis book is also a product of many conversations and exchanges that we had\nwith different people from the Zig community. I (Pedro Duarte Faria) am incredibly\ngrateful for these conversations, and also, for some direct contributions that we\nhad. Below we have a list of the people involved (name of the person with their usename in GitHub):\n\n\nCalin Martinconi (\\@martinconic), Steffen Roller (\\@sroller), Chris Boesch (\\@chrboesch), Lv Sihan (\\@Pokryton), saurabh sharma. (\\@esskayesss), slackline (\\@slackline), Markus Kurz (\\@kurz-m), Rubin Simons (\\@rubin55)\n",
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