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  1. <!doctype html><!-- This is a valid HTML5 document. -->

  2. <!-- Screen readers, SEO, extensions and so on. -->

  3. <html lang=fr>

  4. <!-- Has to be within the first 1024 bytes, hence before the <title>

  5.   See: https://www.w3.org/TR/2012/CR-html5-20121217/document-metadata.html#charset -->

  6. <meta charset=utf-8>

  7. <!-- Why no `X-UA-Compatible` meta: https://stackoverflow.com/a/6771584 -->

  8. <!-- The viewport meta is quite crowded and we are responsible for that.

  9.   See: https://codepen.io/tigt/post/meta-viewport-for-2015 -->

  10. <meta name=viewport content="width=device-width,minimum-scale=1,initial-scale=1,shrink-to-fit=no">

  11. <!-- Required to make a valid HTML5 document. -->

  12. <title>Partir de zéro — David Larlet</title>

  13. <!-- Generated from https://realfavicongenerator.net/ such a mess. -->

  14. <link rel="apple-touch-icon" sizes="180x180" href="/static/david/icons/apple-touch-icon.png">

  15. <link rel="icon" type="image/png" sizes="32x32" href="/static/david/icons/favicon-32x32.png">

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  17. <link rel="manifest" href="/manifest.json">

  18. <link rel="mask-icon" href="/static/david/icons/safari-pinned-tab.svg" color="#5bbad5">

  19. <link rel="shortcut icon" href="/static/david/icons/favicon.ico">

  20. <meta name="apple-mobile-web-app-title" content="David Larlet">

  21. <meta name="application-name" content="David Larlet">

  22. <meta name="msapplication-TileColor" content="#da532c">

  23. <meta name="msapplication-config" content="/static/david/icons/browserconfig.xml">

  24. <meta name="theme-color" content="#f0f0ea">

  25. <!-- That good ol' feed, subscribe :p. -->

  26. <link rel=alternate type="application/atom+xml" title=Feed href="/david/log/">

  27. 

  28.   <!-- Canonical URL for SEO purposes -->

  29.   <link rel="canonical" href="https://larlet.fr/david/stream/2015/11/19/">

  30. 

  31. <style>

  32. /* http://meyerweb.com/eric/tools/css/reset/ */

  33. html, body, div, span,

  34. h1, h2, h3, h4, h5, h6, p, blockquote, pre,

  35. a, abbr, address, big, cite, code,

  36. del, dfn, em, img, ins,

  37. small, strike, strong, tt, var,

  38. dl, dt, dd, ol, ul, li,

  39. fieldset, form, label, legend,

  40. table, caption, tbody, tfoot, thead, tr, th, td,

  41. article, aside, canvas, details, embed,

  42. figure, figcaption, footer, header, hgroup,

  43. menu, nav, output, ruby, section, summary,

  44. time, mark, audio, video {

  45.   margin: 0;

  46.   padding: 0;

  47.   border: 0;

  48.   font-size: 100%;

  49.   font: inherit;

  50.   vertical-align: baseline;

  51. }

  52. /* HTML5 display-role reset for older browsers */

  53. article, aside, details, figcaption, figure,

  54. footer, header, hgroup, menu, nav, section { display: block; }

  55. body { line-height: 1; }

  56. blockquote, q { quotes: none; }

  57. blockquote:before, blockquote:after,

  58. q:before, q:after {

  59.   content: '';

  60.   content: none;

  61. }

  62. table {

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  64.   border-spacing: 0;

  65. }

  66. 

  67. /* http://practicaltypography.com/equity.html */

  68. /* https://calendar.perfplanet.com/2016/no-font-face-bulletproof-syntax/ */

  69. /* https://www.filamentgroup.com/lab/js-web-fonts.html */

  70. @font-face {

  71.   font-family: 'EquityTextB';

  72.   src: url('/static/david/css/fonts/Equity-Text-B-Regular-webfont.woff2') format('woff2'),

  73.        url('/static/david/css/fonts/Equity-Text-B-Regular-webfont.woff') format('woff');

  74.   font-weight: 300;

  75.   font-style: normal;

  76.   font-display: swap;

  77. }

  78. @font-face {

  79.   font-family: 'EquityTextB';

  80.   src: url('/static/david/css/fonts/Equity-Text-B-Italic-webfont.woff2') format('woff2'),

  81.        url('/static/david/css/fonts/Equity-Text-B-Italic-webfont.woff') format('woff');

  82.   font-weight: 300;

  83.   font-style: italic;

  84.   font-display: swap;

  85. }

  86. @font-face {

  87.   font-family: 'EquityTextB';

  88.   src: url('/static/david/css/fonts/Equity-Text-B-Bold-webfont.woff2') format('woff2'),

  89.        url('/static/david/css/fonts/Equity-Text-B-Bold-webfont.woff') format('woff');

  90.   font-weight: 700;

  91.   font-style: normal;

  92.   font-display: swap;

  93. }

  94. @font-face {

  95.   font-family: 'TriplicateT4c';

  96.   src: url('/static/david/css/fonts/Triplicate-T4-Code-Regular-webfont.woff2') format('woff2'),

  97.        url('/static/david/css/fonts/Triplicate-T4-Code-Regular-webfont.woff') format('woff');

  98.   font-weight: 300;

  99.   font-style: normal;

  100.   font-display: swap;

  101. }

  102. 

  103. /* http://practice.typekit.com/lesson/caring-about-opentype-features/ */

  104. body {

  105.   /* http://www.cssfontstack.com/ Palatino 99% Win 86% Mac */

  106.   font-family: "EquityTextB", Palatino, serif;

  107.   background-color: #f0f0ea;

  108.   color: #07486c;

  109.   font-kerning: normal;

  110.   -moz-osx-font-smoothing: grayscale;

  111.   -webkit-font-smoothing: subpixel-antialiased;

  112.   text-rendering: optimizeLegibility;

  113.   font-variant-ligatures: common-ligatures contextual;

  114.   font-feature-settings: "kern", "liga", "clig", "calt";

  115. }

  116. pre, code, kbd, samp, var, tt {

  117.   font-family: 'TriplicateT4c', monospace;

  118. }

  119. em {

  120.   font-style: italic;

  121.   color: #323a45;

  122. }

  123. strong {

  124.   font-weight: bold;

  125.   color: black;

  126. }

  127. nav {

  128.   background-color: #323a45;

  129.   color: #f0f0ea;

  130.   display: flex;

  131.   justify-content: space-around;

  132.   padding: 1rem .5rem;

  133. }

  134.   nav:first-child {

  135.     border-top: 1vh solid #2d7474;

  136.   }

  137.   nav:last-child {

  138.     border-bottom: 1vh solid #2d7474;

  139.   }

  140.   nav a {

  141.     color: #f0f0ea;

  142.   }

  143.   nav abbr {

  144.     border-bottom: 1px dotted white;

  145.   }

  146. 

  147. h1 {

  148.   border-bottom: .2vh solid #2d7474;

  149.   background-color: #e3e1e1;

  150.   color: #323a45;

  151.   text-align: center;

  152.   padding: 2rem 0 1rem;

  153.   width: 100%;

  154. }

  155. h2 {

  156.   margin: 4rem 0 1rem;

  157.   border-top: .2vh solid #2d7474;

  158. }

  159. h3 {

  160.   text-align: center;

  161.   margin: 3rem 0 .75em;

  162. }

  163. hr {

  164.   height: .4rem;

  165.   width: .4rem;

  166.   border-radius: .4rem;

  167.   background: #07486c;

  168.   margin: 2.5rem auto;

  169. }

  170. time {

  171.   display: bloc;

  172.   background-color: #2d7474;

  173.   color: #e3e1e1;

  174.   padding: .29rem 1rem;

  175.   float: right;

  176. }

  177. ul, ol {

  178.   margin: 2rem;

  179. }

  180. ul {

  181.   list-style-type: square;

  182. }

  183. a {

  184.   text-decoration-skip-ink: auto;

  185. }

  186. article {

  187.   max-width: 50rem;

  188.   display: flex;

  189.   flex-direction: column;

  190.   margin: 3rem auto 1rem auto;

  191. }

  192.   article p:last-child {

  193.     margin-bottom: 1rem;

  194.   }

  195. p {

  196.   padding: 0 .5rem;

  197. }

  198.   p + p {

  199.     margin-top: 2rem;

  200.   }

  201. 

  202. blockquote {

  203.   background-color: #e3e1e1;

  204.   border-left: .5vw solid #2d7474;

  205.   display: flex;

  206.   flex-direction: column;

  207.   align-items: center;

  208.   padding: 1rem;

  209.   margin: 1.5rem;

  210. }

  211.   blockquote cite {

  212.     font-style: italic;

  213.   }

  214. 

  215. figure {

  216.   border-top: .2vh solid #2d7474;

  217.   background-color: #e3e1e1;

  218.   text-align: center;

  219.   padding: 1.5rem 0;

  220.   margin: 1rem 0 0;

  221.   font-size: 1.5rem;

  222.   width: 100%;

  223. }

  224.   figure img {

  225.     width: 250px;

  226.     height: 250px;

  227.     border: .5vw solid #323a45;

  228.     padding: 1px;

  229.   }

  230. figcaption {

  231.   padding: 1rem;

  232.   line-height: 1.4;

  233. }

  234. aside {

  235.   display: flex;

  236.   flex-direction: column;

  237.   background-color: #e3e1e1;

  238.   padding: 1rem 0;

  239.   border-bottom: .2vh solid #07486c;

  240. }

  241.   aside p {

  242.     max-width: 50rem;

  243.     margin: 0 auto;

  244.   }

  245. 

  246. /* https://fvsch.com/code/css-locks/ */

  247. p, li, pre, code, kbd, samp, var, tt, time {

  248.   font-size: .95rem;

  249.   line-height: calc( 1.5em + 0.2 * 1rem );

  250. }

  251. h1 {

  252.   font-size: 1.7rem;

  253.   line-height: calc( 1.2em + 0.2 * 1rem );

  254. }

  255. h2 {

  256.   font-size: 1.6rem;

  257.   line-height: calc( 1.3em + 0.2 * 1rem );

  258. }

  259. h3 {

  260.   font-size: 1.35rem;

  261.   line-height: calc( 1.4em + 0.2 * 1rem );

  262. }

  263. @media (min-width: 20em) {

  264.   /* The (100vw - 20rem) / (50 - 20) part

  265.      resolves to 0-1rem, depending on the

  266.      viewport width (between 20em and 50em). */

  267.   p, li, pre, code, kbd, samp, var, tt, time {

  268.     font-size: calc( .95rem + .6 * (100vw - 20rem) / (50 - 20) );

  269.     line-height: calc( 1.5em + 0.2 * (100vw - 50rem) / (20 - 50) );

  270.   }

  271.   h1 {

  272.     font-size: calc( 1.7rem + 1.5 * (100vw - 20rem) / (50 - 20) );

  273.     line-height: calc( 1.2em + 0.2 * (100vw - 50rem) / (20 - 50) );

  274.   }

  275.   h2 {

  276.     font-size: calc( 1.5rem + 1.5 * (100vw - 20rem) / (50 - 20) );

  277.     line-height: calc( 1.3em + 0.2 * (100vw - 50rem) / (20 - 50) );

  278.   }

  279.   h3 {

  280.     font-size: calc( 1.35rem + 1.5 * (100vw - 20rem) / (50 - 20) );

  281.     line-height: calc( 1.4em + 0.2 * (100vw - 50rem) / (20 - 50) );

  282.   }

  283. }

  284. @media (min-width: 50em) {

  285.   /* The right part of the addition *must* be a

  286.      rem value. In this example we *could* change

  287.      the whole declaration to font-size:2.5rem,

  288.      but if our baseline value was not expressed

  289.      in rem we would have to use calc. */

  290.   p, li, pre, code, kbd, samp, var, tt, time {

  291.     font-size: calc( .95rem + .6 * 1rem );

  292.     line-height: 1.5em;

  293.   }

  294.   h1 {

  295.     font-size: calc( 1.7rem + 1.5 * 1rem );

  296.     line-height: 1.2em;

  297.   }

  298.   h2 {

  299.     font-size: calc( 1.5rem + 1.5 * 1rem );

  300.     line-height: 1.3em;

  301.   }

  302.   h3 {

  303.     font-size: calc( 1.35rem + 1.5 * 1rem );

  304.     line-height: 1.4em;

  305.   }

  306.   figure img {

  307.     width: 500px;

  308.     height: 500px;

  309.   }

  310.   blockquote {

  311.     margin-left: -1.5rem;

  312.   }

  313. }

  314. 

  315. figure.unsquared {

  316.   margin-bottom: 1.5rem;

  317. }

  318.   figure.unsquared img {

  319.     height: inherit;

  320.   }

  321. 

  322. /* https://github.com/richleland/pygments-css */

  323. .codehilite{

  324.     background-color: #fdf6e3;

  325.     margin: 1rem auto;

  326.     padding: 1rem;

  327.     overflow-x:auto;

  328.     box-shadow:inset 0 0 2px rgba(0,0,0,0.2)

  329. }

  330. .codehilite .t{color:#586e75}

  331. .codehilite .w{color:#073642}

  332. .codehilite .err{color:#cb4b16}

  333. .codehilite .k{color:#859900}

  334. .codehilite .kc{color:#2aa198}

  335. .codehilite .kd{color:#268bd2}

  336. .codehilite .kn{color:#b58900}

  337. .codehilite .kp{color:#859900}

  338. .codehilite .kr{color:#073642}

  339. .codehilite .kt{color:#b58900}

  340. .codehilite .n{color:#586e75}

  341. .codehilite .na{color:#2aa198}

  342. .codehilite .nb{color:#268bd2}

  343. .codehilite .nc{color:#268bd2}

  344. .codehilite .ne{color:#cb4b16}

  345. .codehilite .no{color:#2aa198}

  346. .codehilite .nd{color:#2aa198}

  347. .codehilite .ni{color:#2aa198;font-weight:bold}

  348. .codehilite .nf{color:#268bd2}

  349. .codehilite .nn{color:#586e75}

  350. .codehilite .nt{color:#2aa198;font-weight:bold}

  351. .codehilite .nv{color:#cb4b16}

  352. .codehilite .b{color:#859900}

  353. .codehilite .bp{color:#586e75}

  354. .codehilite .v{color:#586e75}

  355. .codehilite .vc{color:#586e75}

  356. .codehilite .vg{color:#268bd2}

  357. .codehilite .vi{color:#268bd2}

  358. .codehilite .m{color:#268bd2}

  359. .codehilite .mf{color:#268bd2}

  360. .codehilite .mh{color:#268bd2}

  361. .codehilite .mi{color:#268bd2}

  362. .codehilite .mo{color:#268bd2}

  363. .codehilite .s{color:#2aa198}

  364. .codehilite .sb{color:#2aa198}

  365. .codehilite .sc{color:#2aa198}

  366. .codehilite .sd{color:#2aa198}

  367. .codehilite .s2{color:#2aa198}

  368. .codehilite .se{color:#cb4b16}

  369. .codehilite .sh{color:#2aa198}

  370. .codehilite .si{color:#cb4b16}

  371. .codehilite .sx{color:#2aa198}

  372. .codehilite .sr{color:#cb4b16}

  373. .codehilite .s1{color:#2aa198}

  374. .codehilite .ss{color:#cb4b16}

  375. .codehilite .il{color:#268bd2}

  376. .codehilite .o{color:#586e75}

  377. .codehilite .ow{color:#859900}

  378. .codehilite .p{color:#586e75}

  379. .codehilite .c{color:#93a1a1;font-style:italic}

  380. .codehilite .cm{color:#93a1a1}

  381. .codehilite .cp{color:#93a1a1}

  382. .codehilite .c1{color:#93a1a1}

  383. .codehilite .cs{color:#93a1a1}

  384. .codehilite .hll{background-color:#dc322f}

  385. .codehilite .g{color:#586e75}

  386. .codehilite .gd{color:#586e75}

  387. .codehilite .ge{font-style:italic}

  388. .codehilite .gr{color:#586e75}

  389. .codehilite .gh{color:#586e75;font-weight:bold}

  390. .codehilite .gi{color:#586e75}

  391. .codehilite .go{color:#586e75}

  392. .codehilite .gp{color:#586e75}

  393. .codehilite .gs{font-weight:bold}

  394. .codehilite .gu{color:#586e75;font-weight:bold}

  395. .codehilite .gt{color:#586e75}

  396. 

  397. @media print {

  398.   body { font-size: 100%; }

  399.   a:after { content: " (" attr(href) ")"; }

  400.   a, a:link, a:visited, a:after {

  401.     text-decoration: underline;

  402.     text-shadow: none !important;

  403.     background-image: none !important;

  404.     background: white;

  405.     color: black;

  406.   }

  407.   abbr[title] { border-bottom: 0; }

  408.   abbr[title]:after { content: " (" attr(title) ")"; }

  409.   img { page-break-inside: avoid; }

  410.   @page { margin: 2cm .5cm; }

  411.   h1, h2, h3 { page-break-after: avoid; }

  412.   p3 { orphans: 3; widows: 3; }

  413.   img {

  414.     max-width: 250px !important;

  415.     max-height: 250px !important;

  416.   }

  417.   nav, aside { display: none; }

  418. }

  419. 

  420. /* Dark theme */

  421. [lang=en] body {

  422.   background: #323a45;

  423. }

  424.   [lang=en] article,

  425.   [lang=en] article em,

  426.   [lang=en] article strong {

  427.     color: #f0f0ea;

  428.   }

  429.     [lang=en] article a {

  430.       color: #ffbd2b;

  431.     }

  432.     [lang=en] article a:visited {

  433.       color: #ff6b03;

  434.     }

  435.   [lang=en] blockquote,

  436.   [lang=en] figure {

  437.     background: #111930;

  438.     color: #ccc;

  439.   }

  440. </style>

  441. <nav>

  442.   <p>

  443.     <a href="/david/" title="Profil public">David&nbsp;Larlet</a> partage ses <a href="/david/blog/" title="Expériences bienveillantes">réflexions</a> et sa <a href="/david/stream/2019/" title="Pensées (dés)articulées">veille hebdomadaire</a>.

  444.   </p>

  445. </nav>

  446. 

  447. <h1>Partir de zéro</h1>

  448. <time>2015-11-19</time>

  449. <article>

  450.   <blockquote>

  451. <p>At this point I’m going to park libraries, and leave them out of this discussion. The reason is that, in my view at least, libraries can be swapped out and replaced if they prove problematic. Don’t like the way a library does date formatting? No problem, just switch it for something else. Frameworks, on the other hand, tend to be a lot more difficult to swap, often requiring a rebuild of the app in question. And, by their nature, they’re a lot bigger and more involved.</p>

  452. <p><cite><em><a href="https://aerotwist.com/blog/the-cost-of-frameworks/">The Cost of Frameworks</a></em> (<a href="/david/cache/8d56b85a75797f70d0abe8a9f7cec2d6/">cache</a>)</cite></p>

  453. </blockquote>

  454. <p>Je me demande souvent quels outils est-ce que je prendrais si j’avais carte blanche, indépendamment des contraintes du produit (une autre note sera dédiée à ce sujet). L’équation efficacité vs. ergonomie de développement vs. accessibilité vs. transmission est difficile à trouver.</p>

  455. <p>Côté serveur, je suis davantage attiré par des solutions comme <a href="http://nameko.readthedocs.org/en/stable/">Nameko</a> ou <a href="http://falcon.readthedocs.org/en/stable/">Falcon</a> qui restent minimalistes et pertinents pour des API. Sur le stockage des données, cela dépend vraiment trop de leur nature pour trancher, <a href="http://redis.io/">Redis</a> serait sûrement de la partie et il faudrait que j’explore <a href="http://rethinkdb.com/">RethinkDB</a>.</p>

  456. <p>Côté client, l’équation est beaucoup plus complexe. Pour le style, <a href="http://cssnext.io/">cssnext</a> me semble être l’approche la plus saine et pérenne, associée à une <a href="http://rscss.io/">stratégie de nomenclature raisonnable</a>. La question qui coûte cher, c’est de savoir comment gérer les <em>web components</em> et leurs données. Des solutions comme <a href="https://www.polymer-project.org/">Polymer</a> ou <a href="http://facebook.github.io/react/">React</a> sont vraiment <a href="https://aerotwist.com/blog/the-cost-of-frameworks/">trop coûteuses</a> (<a href="/david/cache/8d56b85a75797f70d0abe8a9f7cec2d6/">cache</a>) pour moi. Devoir mettre à jour <a href="https://github.com/etalab/udata/pull/237">des milliers de lignes</a> lors d’une montée en version est rédhibitoire, sans compter la courbe d’apprentissage et de ré-apprentissage. Je pensais avoir trouvé la solution avec <a href="http://riotjs.com/">RiotJS</a> mais ça reste encore trop compliqué/magique et <a href="http://x-tag.github.io/">x-tag</a> n’est pas encore suffisamment mature.</p>

  457. <p>Mais cette approche où le couplage client-serveur est fort reste traditionnelle et il serait peut-être temps de passer à de l’<a href="https://speakerdeck.com/espylaub/offline-first-web-apps-beuth-hochschule-berlin">offline-first</a> avec <a href="http://hood.ie/">Hoodie</a> sachant qu’il est possible de <a href="https://github.com/mWater/minimongo">commencer en douceur</a> et <a href="http://highscalability.com/blog/2015/9/21/uber-goes-unconventional-using-driver-phones-as-a-backup-dat.html">d’aller plus loin</a> (<a href="/david/cache/27d1e42423963d4650201455ba67a068/">cache</a>).</p>

  458. <p><a href="/david/stream/2015/11/18/">Sans JavaScript</a> qu’il disait…</p>

  459. </article>

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  474.     <a href="/david/blog/2018/commodite-effondrement/" title="Accéder à l’article complet">Commodité et effondrement</a>,

  475.     <a href="/david/blog/2017/donnees-communs/" title="Accéder à l’article complet">Des données aux communs</a>,

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  479.     <a href="/david/blog/2016/instantane-scopyleft/" title="Accéder à l’article complet">Instantané Scopyleft</a>,

  480.     <a href="/david/blog/2016/enseigner-web/" title="Accéder à l’article complet">Enseigner le Web</a>,

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  483.     <a href="/david/blog/2015/travail-transition/" title="Accéder à l’article complet">Travail en transition</a>,

  484.     <a href="/david/blog/2015/pairmutation-travail/" title="Accéder à l’article complet">La pairmutation du travail</a>,

  485.     <a href="/david/blog/2015/principes-web/" title="Accéder à l’article complet">Principes Web</a>,

  486.     <a href="/david/blog/2015/travail-transition/" title="Accéder à l’article complet">Travail en transition</a>,

  487.     <a href="/david/blog/2014/un-web-omni-present/" title="Accéder à l’article complet">Un web omni-présent</a>,

  488.     <a href="/david/blog/2014/manifeste-developpeur/" title="Accéder à l’article complet">Manifeste de développeur</a>,

  489.     <a href="/david/blog/2013/confort-convivialite/" title="Accéder à l’article complet">Confort et convivialité</a>,

  490.     <a href="/david/blog/2013/testament-numerique/" title="Accéder à l’article complet">Testament numérique</a>,

  491.     et <a href="/david/blog/" title="Accéder aux archives">bien d’autres…</a>

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