This shows an awesome way to manage unique keys with references uniquely identified

uniqueKeyNChildReact.md

	this.Sections = [];
	//by using block scope introduced by let, I am able to pass a unique value to each different child, in order to uniquely identify them without any other dependencies
	for(let i = 1; i <= 4; i++) {
		this.Sections.push(
			<div style={styles.section} key={'parent_' + i} className='section'>
				<div style={styles.header} key={i} onClick={() => this._onClick(i)} className='header'></div>
			</div>
		)
	}