Counter and Theme Toggle - Xquery Typing CST Test

Counter and Theme Toggle — Xquery Code

Demonstrates a simple counter with theme toggling using XQuery variables and functional expressions.

declare variable $count := 0;
declare variable $isDark := false;

declare function local:updateUI() {
	concat('Counter: ', $count, '
', 'Theme: ', if ($isDark) then 'Dark' else 'Light')
};

declare function local:increment() {
	declare variable $count := $count + 1;
	local:updateUI()
};

declare function local:decrement() {
	declare variable $count := $count - 1;
	local:updateUI()
};

declare function local:reset() {
	declare variable $count := 0;
	local:updateUI()
};

declare function local:toggleTheme() {
	declare variable $isDark := not($isDark);
	local:updateUI()
};

(: Simulate actions :)
local:updateUI();
local:increment();
local:increment();
local:toggleTheme();
local:decrement();
local:reset();

Xquery Language Guide

XQuery is a functional, expression-oriented language designed for querying, transforming, and manipulating XML data. It provides powerful tools for navigating hierarchical structures using XPath and is widely used in systems that store or exchange data in XML.

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