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<h1>dotenv_example.sl</h1>
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<td class="code-content"><pre>// Dotenv Example</pre></td>
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<td class="code-content"><pre>// This example demonstrates loading environment variables from a .env file</pre></td>
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<td class="code-content"><pre></pre></td>
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<td class="code-content"><pre>// Load environment variables from .env file (defaults to ".env")</pre></td>
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<td class="line-indicator">✗</td>
<td class="code-content"><pre>let count = dotenv();</pre></td>
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<td class="line-num">6</td>
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<td class="code-content"><pre>println("Loaded", count, "environment variables from .env");</pre></td>
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<td class="code-content"><pre></pre></td>
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<td class="code-content"><pre>// Access environment variables</pre></td>
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<td class="code-content"><pre>let database_url = getenv("DATABASE_URL");</pre></td>
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<td class="code-content"><pre>let api_key = getenv("API_KEY");</pre></td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">12</td>
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<td class="code-content"><pre>if database_url != null {</pre></td>
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<td class="line-num">13</td>
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<td class="code-content"><pre> println("Database URL:", database_url);</pre></td>
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<td class="code-content"><pre>} else {</pre></td>
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<td class="code-content"><pre> println("DATABASE_URL not set");</pre></td>
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<td class="code-content"><pre>}</pre></td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">18</td>
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<td class="code-content"><pre>if api_key != null {</pre></td>
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<td class="line-num">19</td>
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<td class="code-content"><pre> println("API Key is configured");</pre></td>
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<td class="code-content"><pre>} else {</pre></td>
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<td class="line-num">21</td>
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<td class="code-content"><pre> println("API_KEY not set (create a .env file to configure)");</pre></td>
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<td class="code-content"><pre>}</pre></td>
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<td class="code-content"><pre></pre></td>
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<td class="code-content"><pre>// Check if specific variables exist</pre></td>
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<td class="code-content"><pre>if hasenv("DEBUG") {</pre></td>
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<td class="code-content"><pre> let debug = getenv("DEBUG");</pre></td>
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<td class="line-num">27</td>
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<td class="code-content"><pre> println("Debug mode:", debug);</pre></td>
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<td class="code-content"><pre>}</pre></td>
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<td class="line-num">30</td>
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<td class="code-content"><pre>// Set environment variables programmatically</pre></td>
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<td class="line-num">31</td>
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<td class="code-content"><pre>setenv("MY_APP_VAR", "my_value");</pre></td>
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<td class="line-num">32</td>
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<td class="code-content"><pre>println("Set MY_APP_VAR:", getenv("MY_APP_VAR"));</pre></td>
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<td class="code-content"><pre></pre></td>
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<td class="code-content"><pre>// Check system environment variables</pre></td>
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<td class="code-content"><pre>let home = getenv("HOME");</pre></td>
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<td class="code-content"><pre>let path = getenv("PATH");</pre></td>
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<td class="code-content"><pre></pre></td>
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<td class="code-content"><pre>if home != null {</pre></td>
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<td class="line-num">39</td>
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<td class="code-content"><pre> println("Home directory:", home);</pre></td>
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<td class="code-content"><pre>}</pre></td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">42</td>
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<td class="code-content"><pre>println("Path length:", len(path));</pre></td>
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<td class="code-content"><pre></pre></td>
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<td class="line-num">44</td>
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<td class="code-content"><pre>// Example .env file format:</pre></td>
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<td class="code-content"><pre>// DATABASE_URL=postgres://user:pass@localhost:5432/mydb</pre></td>
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<td class="code-content"><pre>// API_KEY=your-api-key-here</pre></td>
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<td class="code-content"><pre>// DEBUG=true</pre></td>
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<td class="code-content"><pre>// PORT=8080</pre></td>
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<td class="code-content"><pre></pre></td>
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<td class="code-content"><pre>println("\nDone!");</pre></td>
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