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‎asset-manifest.json‎

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‎images/defaults/mohammad-rahmani-8qEB0fTe9Vw-unsplash.jpg‎

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‎index.html‎

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<!doctype html><html lang="en" class="dark"><head><meta charset="utf-8"/><link rel="icon" href="/favicon.ico"/><link rel="icon" type="image/svg+xml" href="/favicon.svg"/><meta name="viewport" content="width=device-width,initial-scale=1"/><meta name="theme-color" content="#000000"/><link rel="alternate" type="application/rss+xml" title="Fezcodex RSS Feed" href="/rss.xml"/><meta name="description" content="codex by fezcode..."/><link rel="apple-touch-icon" href="/logo192.png"/><link rel="manifest" href="/manifest.json"/><link rel="preconnect" href="https://fonts.googleapis.com"><link rel="preconnect" href="https://fonts.gstatic.com" crossorigin><link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700&family=Space+Mono:wght@400;700&display=swap" rel="stylesheet"><link href="https://fonts.googleapis.com/css2?family=Arvo&family=Inter&family=Playfair+Display&display=swap" rel="stylesheet"><title>fezcodex</title><script defer="defer" src="/static/js/main.b8eb30d4.js"></script><link href="/static/css/main.ddae51d8.css" rel="stylesheet"></head><body class="bg-slate-950"><noscript>You need to enable JavaScript to run this app.</noscript><div id="root"></div></body></html>
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<!doctype html><html lang="en" class="dark"><head><meta charset="utf-8"/><link rel="icon" href="/favicon.ico"/><link rel="icon" type="image/svg+xml" href="/favicon.svg"/><meta name="viewport" content="width=device-width,initial-scale=1"/><meta name="theme-color" content="#000000"/><link rel="alternate" type="application/rss+xml" title="Fezcodex RSS Feed" href="/rss.xml"/><meta name="description" content="codex by fezcode..."/><link rel="apple-touch-icon" href="/logo192.png"/><link rel="manifest" href="/manifest.json"/><link rel="preconnect" href="https://fonts.googleapis.com"><link rel="preconnect" href="https://fonts.gstatic.com" crossorigin><link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700&family=Space+Mono:wght@400;700&display=swap" rel="stylesheet"><link href="https://fonts.googleapis.com/css2?family=Arvo&family=Inter&family=Playfair+Display&display=swap" rel="stylesheet"><title>fezcodex</title><script defer="defer" src="/static/js/main.bdcedfde.js"></script><link href="/static/css/main.1be45811.css" rel="stylesheet"></head><body class="bg-slate-950"><noscript>You need to enable JavaScript to run this app.</noscript><div id="root"></div></body></html>

‎posts/floating-point-precision-in-javascript.txt‎

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# Behold, A New Operator `====`
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## About
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When `0.1 + 0.2` in JavaScript yields `0.30000000000000004`, it highlights a **common aspect of computer arithmetic**,
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not a bug. This occurs because JavaScript, like most languages, uses the **IEEE 754 standard** for floating-point numbers,
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which relies on **binary (base-2) representation**.
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**Decimal fractions** like 0.1 and 0.2 **cannot be perfectly represented as finite binary fractions**; they become infinitely repeating.
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When these are stored in a **finite number of bits**, a **tiny truncation error** is introduced. This **slight imprecision**
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in each number **accumulates during addition**, resulting in a sum that's marginally off from the **exact mathematical total**.
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### Solutions
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For scenarios requiring **precise decimal arithmetic** (e.g., financial applications), direct floating-point calculations
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can be problematic. Consider these approaches:
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1. **Rounding:** Use `toFixed()` to round results to a desired decimal precision. Remember to convert the string output
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back to a number if needed.
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```javascript
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parseFloat((0.1 + 0.2).toFixed(1)); // 0.3
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```
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2. **Integer Arithmetic:** **Scale numbers to integers** before calculations and then scale the final result back down.
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```javascript
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(0.1 * 10 + 0.2 * 10) / 10; // 0.3
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```
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3. **Specialized Libraries:** For **advanced precision**, utilize libraries like `Big.js` or `Decimal.js`.
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This behavior is a **fundamental consequence of binary representation in computing**, not a flaw in JavaScript,
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and **understanding it is key** to handling numerical precision effectively.
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## Introducing the `====` Operator: For When `===` Just Isn't Enough
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Sometimes, **strict equality** (`===`) feels like it's trying *too hard* to be precise, yet still falls short of our
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deepest desires for perfect, unyielding truth. For those moments, when you need to compare not just value and type,
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but also the very **essence** of existence, I propose the **Quadruple Equals Operator (`====`)**!
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What does `====` do? Well, it's simple:
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* `0.1 + 0.2 ==== 0.3` would _(theoretically)_ return `true`. Because in a world where `====` exists, numbers just *know* what they're supposed to be.
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* `"hello" ==== "hello"` would, naturally, be `true`.
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* `[] ==== []` might still be `false`, because even `====` respects the **existential uniqueness** of array instances. But I am working on it. ¯\\\_(ツ)\_/¯
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* The `====` operator is so powerful, it can detect **deep existential equality**, ensuring that not only values and types match,
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but also their **historical context**, their **developer's intent**, and their **cosmic vibrational frequency**.
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Alas, `====` is a mere dream, a **mythical beast** in the JavaScript ecosystem, born from the frustration of floating-point arithmetic.
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For now, we'll have to stick to our practical solutions. But one can dream of a world where `0.1 + 0.2 ==== 0.3` just *makes sense*.

‎posts/posts.json‎

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[
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{
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"slug": "floating-point-precision-in-javascript",
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"title": "4 Equals For Complete Equalness",
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"date": "2025-11-21",
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"updated": "2025-11-21",
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"description": "Dive into the quirky world of JavaScript's floating-point math, where 0.1 + 0.2 isn't always 0.3. Discover why and then ponder the mythical `====` operator, designed for complete equalness beyond your wildest dreams!",
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"tags": ["javascript", "floating-point", "precision", "ieee-754", "programming"],
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"category": "rant",
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"filename": "floating-point-precision-in-javascript.txt",
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"authors": ["fezcode"],
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"image": "/images/defaults/mohammad-rahmani-8qEB0fTe9Vw-unsplash.jpg"
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},
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{
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"slug": "kaprekars-routine",
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"title": "Kaprekar's Routine: A Curious Number Game",

‎rss.xml‎

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</image>
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<generator>RSS for Node</generator>
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<copyright><![CDATA[2025 Ahmed Samil Bulbul]]></copyright>
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<title><![CDATA[4 Equals For Complete Equalness]]></title>
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<dc:creator><![CDATA[Ahmed Samil Bulbul]]></dc:creator>
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<content:encoded><![CDATA[<h1>Behold, A New Operator <code>====</code></h1>
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<h2>About</h2>
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<p>When <code>0.1 + 0.2</code> in JavaScript yields <code>0.30000000000000004</code>, it highlights a <strong>common aspect of computer arithmetic</strong>,
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not a bug. This occurs because JavaScript, like most languages, uses the <strong>IEEE 754 standard</strong> for floating-point numbers,
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which relies on <strong>binary (base-2) representation</strong>.</p>
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<p><strong>Decimal fractions</strong> like 0.1 and 0.2 <strong>cannot be perfectly represented as finite binary fractions</strong>; they become infinitely repeating.
33+
When these are stored in a <strong>finite number of bits</strong>, a <strong>tiny truncation error</strong> is introduced. This <strong>slight imprecision</strong>
34+
in each number <strong>accumulates during addition</strong>, resulting in a sum that&#39;s marginally off from the <strong>exact mathematical total</strong>.</p>
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<h3>Solutions</h3>
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<p>For scenarios requiring <strong>precise decimal arithmetic</strong> (e.g., financial applications), direct floating-point calculations
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can be problematic. Consider these approaches:</p>
38+
<ol>
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<li><strong>Rounding:</strong> Use <code>toFixed()</code> to round results to a desired decimal precision. Remember to convert the string output
40+
back to a number if needed.<pre><code class="language-javascript">parseFloat((0.1 + 0.2).toFixed(1)); // 0.3
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</code></pre>
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</li>
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<li><strong>Integer Arithmetic:</strong> <strong>Scale numbers to integers</strong> before calculations and then scale the final result back down.<pre><code class="language-javascript">(0.1 * 10 + 0.2 * 10) / 10; // 0.3
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</code></pre>
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</li>
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<li><strong>Specialized Libraries:</strong> For <strong>advanced precision</strong>, utilize libraries like <code>Big.js</code> or <code>Decimal.js</code>.</li>
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</ol>
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<p>This behavior is a <strong>fundamental consequence of binary representation in computing</strong>, not a flaw in JavaScript,
49+
and <strong>understanding it is key</strong> to handling numerical precision effectively.</p>
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<h2>Introducing the <code>====</code> Operator: For When <code>===</code> Just Isn&#39;t Enough</h2>
51+
<p>Sometimes, <strong>strict equality</strong> (<code>===</code>) feels like it&#39;s trying <em>too hard</em> to be precise, yet still falls short of our
52+
deepest desires for perfect, unyielding truth. For those moments, when you need to compare not just value and type,
53+
but also the very <strong>essence</strong> of existence, I propose the <strong>Quadruple Equals Operator (<code>====</code>)</strong>!</p>
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<p>What does <code>====</code> do? Well, it&#39;s simple:</p>
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<ul>
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<li><code>0.1 + 0.2 ==== 0.3</code> would <em>(theoretically)</em> return <code>true</code>. Because in a world where <code>====</code> exists, numbers just <em>know</em> what they&#39;re supposed to be.</li>
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<li><code>&quot;hello&quot; ==== &quot;hello&quot;</code> would, naturally, be <code>true</code>.</li>
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<li><code>[] ==== []</code> might still be <code>false</code>, because even <code>====</code> respects the <strong>existential uniqueness</strong> of array instances. But I am working on it. ¯\_(ツ)_/¯</li>
59+
<li>The <code>====</code> operator is so powerful, it can detect <strong>deep existential equality</strong>, ensuring that not only values and types match,
60+
but also their <strong>historical context</strong>, their <strong>developer&#39;s intent</strong>, and their <strong>cosmic vibrational frequency</strong>.</li>
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</ul>
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<p>Alas, <code>====</code> is a mere dream, a <strong>mythical beast</strong> in the JavaScript ecosystem, born from the frustration of floating-point arithmetic.
63+
For now, we&#39;ll have to stick to our practical solutions. But one can dream of a world where <code>0.1 + 0.2 ==== 0.3</code> just <em>makes sense</em>.</p>
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<p><a href="https://fezcode.com/#/blog/floating-point-precision-in-javascript">Read more...</a></p>]]></content:encoded>
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<title><![CDATA[Kaprekar's Routine: A Curious Number Game]]></title>
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