Suggestion - WordPress Custom Fields in post object

<?php
//----------------------------
// Old way of getting post and custom fields - Get fields inside the loop with get_post_meta() that has 2-3 parameters 
//----------------------------

$the_query = new WP_Query( $args );

// Loop
if ( $the_query->have_posts() ) {
	while ( $the_query->have_posts() ) {
		$the_query->the_post();
		echo get_the_title();
		echo get_post_meta($post_id, 'location' );
		echo get_post_meta($post_id, 'date' );
	}
}

//----------------------------
// New way - Set up custom fields in the main query and print them in the loop from the object by fields name.
//----------------------------

// Get all custom fields
$the_query = new WP_Query( 'post_fields' = TRUE );

// Get specific custom fields
$the_query = new WP_Query( 'post_fields' = array( 'location' , 'date' ) );

// Loop
if ( $the_query->have_posts() ) {
	while ( $the_query->have_posts() ) {
		$the_query->the_post();
		echo get_the_title();
		echo $the_query->post_field( 'location' );
		echo $the_query->post_field( 'date' );
	}
}