wehub-resource-sync
34 lines
1.3 KiB
HTML
34 lines
1.3 KiB
HTML
<h4>Variables</h4>
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<br>
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<p>Variables are containers for storing data values.</p>
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<ul>
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<li>Global and local variables are optional.</li>
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<li>To declare more than one variable, use a space.</li>
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</ul>
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<p>The general rules for constructing names for variables (unique identifiers) are:</p>
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<ul>
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<li>Names can contain letters, digits and underscores (<code>_</code>).</li>
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<li>Names must begin with a letter.</li>
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<li>Names cannot contain whitespaces or special characters like !, #, %, etc.</li>
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<li>Reserved words (like keywords, such as null, true, false, etc.) cannot be used as names.</li>
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<li>Variables can be placed in globle variables, or in the dynamic body section of an menu, or in both.</li>
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</ul>
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<p>
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All variables must be identified with unique names.<br>
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These unique names are called identifiers.
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Identifiers can be short names (like x and y) or more descriptive names (age, sum, totalVolume).
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</p>
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<p><i>Note:</i> It is recommended to use descriptive names in order to create understandable and maintainable code</p>
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<h5 class="mt-5">Example</h5>
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<pre><code class="lang-shell">$hello_world = 'Hello World!'
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$test_add1 = 5 + 6
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item(title = hello_world cmd = msg(hello_world))
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menu(title = test_add1)
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{
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$test_sub1 = 11 - 5
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item(title = test_sub1)
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}</code></pre>
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