View difference between Paste ID: 90YpFC4S and KgxWzHyZ

 <?php /* Template Name: Home */ ?>
 
 <?php get_header(); ?>
 
         <div id="container" class="col8">
 
             <div id="content">
 
             <?php
             // 3 seperate Loops each containing its own category:
 
             // 1st Loop Category - Blog
             // 2nd Loop Category - Project
             // 3rd Loop Category - tutorial
             ?>
 
-            <?php //Blog Loop ?>
+            <?php //Blog Loop
             $do_not_duplicate = array(); ?>
             <?php $blog_loop = new WP_Query('category_name=blog&posts_per_page=1');
 
                 while ($blog_loop->have_posts()) : $blog_loop->the_post();
-                    $do_not_duplicate = $post->ID;
+
                     $do_not_duplicate[] = $post->ID;
 
             ?>
 
             <div id="blog-post-<?php the_ID(); ?>" <?php post_class(); ?>>
 
                 <div class="blog-entry-content">
 
                     <?php the_content(); ?>
 
                 </div><!-- .entry-content -->
 
             </div><!-- #post-<?php the_ID(); ?> -->
 
             <?php endwhile; ?>
 
-            <?php wp_reset_query() ?>
+
             <?php wp_reset_postdata() ?>
 
 
-            <?php $project_loop = new WP_Query('category_name=project&posts_per_page=1');
+
             <?php $project_loop = new WP_Query(array( 'category_name' => 'project', 'posts_per_page' => 1, 'post__not_in' => $do_not_duplicate ));
 
                 while ($project_loop->have_posts()) : $project_loop->the_post();
-                    $do_not_duplicate = $post->ID;
+
                     $do_not_duplicate[] = $post->ID;
 
             ?>
 
             <div id="project-post-<?php the_ID(); ?>" <?php post_class(); ?>>
 
                 <div class="project-entry-content">
 
                     <?php the_content(); ?>
 
                 </div><!-- .entry-content -->
 
             </div><!-- #post-<?php the_ID(); ?> -->
 
             <?php endwhile; ?>
 
-            <?php wp_reset_query() ?>
+
             <?php wp_reset_postdata() ?>
 
 
-            <?php $tutorial_loop = new WP_Query('category_name=tutorial&posts_per_page=5');
+
             <?php $tutorial_loop = new WP_Query(array( 'category_name' => 'tutorial', 'posts_per_page' => 5, 'post__not_in' => $do_not_duplicate )) ;
 
                 while ($tutorial_loop->have_posts()) : $tutorial_loop->the_post();
-                    $do_not_duplicate = $post->ID;
+
                     $do_not_duplicate[] = $post->ID;
 
             ?>
 
             <div id="tutorial-post-<?php the_ID(); ?>" <?php post_class(); ?>>
 
                 <div class="tutorial-entry-content">
 
                     <?php the_content(); ?>
 
                 </div><!-- .entry-content -->
 
             </div><!-- #post-<?php the_ID(); ?> -->
-            <?php endwhile; endif; ?>
+
             <?php endwhile; ?>
             <?php wp_reset_postdata() ?>
 
             </div><!-- #content -->
 
         <?php get_sidebar(); ?>
 
         </div><!-- #container -->
 
 <?php get_footer(); ?>