33 lines
No EOL
2 KiB
HTML
33 lines
No EOL
2 KiB
HTML
<!doctype html>
|
||
<html lang="en">
|
||
<head>
|
||
<meta charset="utf-8">
|
||
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||
<title>Os.env_or — Ludic</title>
|
||
<meta name="description" content="Read an environment variable, or a fallback.">
|
||
<link rel="stylesheet" href="base.css">
|
||
<link rel="stylesheet" href="docs.css">
|
||
</head>
|
||
<body>
|
||
<header class="nav"><div class="wrap nav-in"><a class="brand" href="index.html"><span class="logo">L</span> Ludic</a><button class="nav-toggle" aria-label="Toggle menu" aria-expanded="false">☰</button><nav class="nav-links"><a href="index.html">Home</a><a href="api.html">API Reference</a><a class="nav-cta" href="https://git.workshopsoft.io/workshopsoft/ludic">Source ↗</a></nav></div></header>
|
||
<main class="wrap item">
|
||
<div class="crumbs"><a href="api.html">API Reference</a> <span>›</span> <a href="ns-os.html">Os</a> <span>›</span> <span class="here">Os.env_or</span></div>
|
||
<div class="item-head">
|
||
<span class="kind-badge kind-method">method</span>
|
||
<h1 id="top">Os.env_or</h1>
|
||
</div>
|
||
<code class="sig">Os.env_or(name, fallback) -> string</code>
|
||
<div class="desc"><p>Reads an environment variable, returning <code>fallback</code> when it is not set — the null-safe way to read optional configuration. The result is always non-null, so it is safe to use directly.</p></div>
|
||
<div class="params"><h2>Parameters</h2><div class="param" id="param-name"><code class="pname">name</code><span class="pdesc">the variable name</span></div><div class="param" id="param-fallback"><code class="pname">fallback</code><span class="pdesc">the value to use when the variable is unset</span></div></div>
|
||
<div class="examples"><h2>Example</h2><pre data-lang="ludic">program EnvOr {
|
||
entry {
|
||
let assets = Os.env_or("LUDIC_ASSETS", "assets/")
|
||
print(len(assets))
|
||
}
|
||
}</pre></div>
|
||
|
||
<a class="back" href="api.html">← All symbols</a>
|
||
</main>
|
||
<script src="ludic-highlight.js"></script>
|
||
<script>Ludic.highlightAll(); Ludic.installCards(); Ludic.flashTarget();</script>
|
||
</body></html> |