e</a></span>&nbsp;<span class="element-name">getConstantValue</span><wbr><span class="parameters">(int&nbsp;i)</span></div>
<div class="block"><span class="description-from-type-label">Description copied from class:&nbsp;<code><a href="Expression.html#getConstantValue(int)">Expression</a></code></span></div>
<div class="block">Returns the i'th compile-time constant value within a literal or constructor.
 Indices which do not contain compile-time constant values will return empty.
 `vec4(1, vec2(2), 3)` cont