kerenren

// how to create a clockwise rotate animation with SwitchTransition and CSSTransition approach


// jsx
	<div className="rotating-icon">
				<SwitchTransition>
					<CSSTransition
						key={state ? 'faChevronDown' : 'faChevronUp'}
						addEndListener={(node, done) => node.addEventListener('transitionend', done, false)}
						classNames="rotate"

kerenren

// exmpale to use Promise.all to preload all the iamges in the array to the app 

// [loading, setLoading] = useState(false); 

const cacheImages = async (srcArray) => { 
const promises = await srcArray.map((src)=>{
	return new Promise((resolve, reject) => {
		const img = new Image();
		img.src = src;
		img.onload = resolve;

kerenren

//set the hardware clock 
sudo hwclock --set --date="2020-04-28 18:07:50"

// syncronise the system clock to the hardware clock
sudo hwclock -s