ponta

<h1 id="float-%2F-double" data-line="0" class="code-line">
<a class="header-anchor-link" href="#float-%2F-double" aria-hidden="true"></a> Float / Double</h1>
<ul data-line="1" class="code-line">
<li data-line="1" class="code-line">Not precise and will turn into a bunch of errors</li>
</ul>
<div class="code-block-container"><pre class="language-js"><code class="language-js code-line" data-line="3">console.log(.1+.2)
// -&gt; 0.30000000000000004
</code></pre></div><h1 id="decimal-%2F-numeric" data-line="8" class="code-line">
<a class="header-anchor-link" href="#decimal-%2F-numeric" aria-hidden="true"></a> Decimal / Numeric</h1>
<ul data-line="9" class="code-line">
<li data-line="9" class="code-line">This type does not exists in JS and has to parse into String (not type safety)</li>
<li data-line="10" class="code-line">Requires to use additional libs (<a href="https://github.com/MikeMcl/decimal.js" target="_blank" rel="nofollow noopener noreferrer">decimal.js</a>, <a href="https://github.com/MikeMcl/big.js" target="_blank" rel="nofollow noopener noreferrer">big.js</a>)</li>
<li data-line="11" class="code-line">Not cross-language compatible (hard to migrate to other DB or language)</li>
<li data-line="12" class="code-line">calculation looks too complex</li>
</ul>
<div class="code-block-container"><pre class="language-js"><code class="language-js code-line" data-line="13">x.div(y).plus(z).times(9).minus('1.234567801234567e+8').plus(976.54321).div('2598.11772')
x.sqrt().div(y).pow(3).gt(y.mod(z)) // true
</code></pre></div><h1 id="use-integers-of-the-smallest-unit-of-the-currency" data-line="18" class="code-line">
<a class="header-anchor-link" href="#use-integers-of-the-smallest-unit-of-the-currency" aria-hidden="true"></a> Use integers of the smallest unit of the currency</h1>
<ul data-line="19" class="code-line">
<li data-line="19" class="code-line">$10.50 → 10500</li>
<li data-line="20" class="code-line">cross-language compatible</li>
</ul>

<ul data-line="0" class="code-line">
<li data-line="0" class="code-line"><a href="https://bitcat.dev/avoid-common-pitfalls-fintech-currency-handling/" target="_blank" rel="nofollow noopener noreferrer">Avoid Common Pitfalls: The Dos and Don’ts of Handling Currency Data in Fintech – BITCAT</a></li>
<li data-line="1" class="code-line"><a href="https://stackoverflow.com/questions/29341337/how-to-define-money-amounts-in-an-api" target="_blank" rel="nofollow noopener noreferrer">currency - How to define money amounts in an API - Stack Overflow</a></li>
<li data-line="2" class="code-line"><a href="https://www.honeybadger.io/blog/currency-money-calculations-in-javascript/" target="_blank" rel="nofollow noopener noreferrer">Currency Calculations in JavaScript - Honeybadger Developer Blog</a></li>
</ul>