Callbacks and Higher-Order Functions

What concept is demonstrated in this code?

function debounce(func, delay) {
  let timeoutId;
  return function(...args) {
    clearTimeout(timeoutId);
    timeoutId = setTimeout(() => {
      func.apply(this, args);
    }, delay);
  };
}

Recursion
Memoization
Function debouncing using higher-order functions
This code demonstrates function debouncing using higher-order functions. Debouncing is a programming practice used to ensure that time-consuming tasks do not fire so often, making them more efficient. The debounce function returns a new function that, when called, will postpone its execution until after the specified delay has elapsed since the last time it was invoked. This is commonly used for performance optimization with events that might fire rapidly (like window resizing, scrolling, or keystrokes). The implementation uses closures, higher-order functions, and setTimeout to manage the timing of function calls.
Callback hell

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