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<?php
//https://codex.wordpress.org/Class_Reference/WP_Query#Parameters
//wp_reset_postdata();
//couple of parameters in example
$args = array(
	'post_type'      => 'post',
	'posts_per_page' => 1,
	);
$the_query = new WP_Query($args);

//wp_reset_postdata();

<?php

get_header(); ?>

	<div id="primary" class="site-content">
		<div id="content" role="main">

			<?php while ( have_posts() ) : the_post(); ?>
				<?php get_template_part( 'content', 'page' ); ?>
				<?php comments_template( '', true ); ?>
			<?php endwhile; // end of the loop. ?>

		</div><!-- #content -->
	</div><!-- #primary -->

<?php get_sidebar(); ?>
<?php get_footer(); ?>

<?php

//basic WordPress Loop

<?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>

	<h3><?php the_title() ;?></h3>	
	<?php the_content(); ?>

<?php endwhile; else: ?>
	
	<p>No content available</p>

<?php endif; ?>


<?php
//for custom loops use WP_Query

<?php
//example of regular loop followed by wp_query with parameters followed by new loop
get_header(); ?>

	<div id="primary" class="site-content">
		<div id="content" role="main">

			<?php while ( have_posts() ) : the_post(); ?>
				<?php get_template_part( 'content', 'page' ); ?>
				<?php comments_template( '', true ); ?>
			<?php endwhile; // end of the loop. ?>
			
		<?	wp_reset_postdata(); //resets loop
			//new wp_query function and parameters
			//https://codex.wordpress.org/Class_Reference/WP_Query#Parameters - all the parameters
			$args = array(
				'post_type'      => 'post',
				'posts_per_page' => 1,
				);
			$the_query = new WP_Query($args);
			
			//wp_reset_postdata(); // not need reset is after initial loop
		//newloop ?>
			<?php while ( $the_query->have_posts() ) : $the_query->the_post(); //Applying only the new paraneters  $the_query-> ?>
				<?php get_template_part( 'content', 'page' ); ?>
			
			<?php endwhile; // end of the loop. ?>

		</div><!-- #content -->
	</div><!-- #primary -->

<?php
//example of regular loop followed by wp_query with parameter that displays posts with the wordpress in it, followed by new loop
get_header(); ?>

	<div id="primary" class="site-content">
		<div id="content" role="main">

			<?php while ( have_posts() ) : the_post(); ?>
				<?php get_template_part( 'content', 'page' ); ?>
				<?php comments_template( '', true ); ?>
			<?php endwhile; // end of the loop. ?>
			
		<?	wp_reset_postdata(); //resets loop
			//new wp_query function and parameters
			//https://codex.wordpress.org/Class_Reference/WP_Query#Parameters - all the parameters
			$args = array(
				's'  => 'wordpress',
				);
			$the_query = new WP_Query($args);
			
			//wp_reset_postdata(); // not need reset is after initial loop
		//newloop ?>
			<?php while ( $the_query->have_posts() ) : $the_query->the_post(); //Applying only the new paraneters  $the_query-> ?>
				<?php get_template_part( 'content', 'page' ); ?>
			
			<?php endwhile; // end of the loop. ?>

		</div><!-- #content -->
	</div><!-- #primary -->