error_log(var_export($wp_query, true), 3, ABSPATH . "debug.log" );

WP_Query::__set_state(array(
   'query' =>
  array (
  ),
   'query_vars' =>
  array (
    'error' => '',
    'm' => '',
...
   'max_num_comment_pages' => 0,
   'is_single' => false,
   'is_preview' => false,
   'is_page' => false,
   'is_archive' => false,
   'is_date' => false,
   'is_year' => false,
   'is_month' => false,
   'is_day' => false,
   'is_time' => false,
   'is_author' => false,
   'is_category' => false,
   'is_tag' => false,
   'is_tax' => false,
   'is_search' => false,
   'is_feed' => false,
   'is_comment_feed' => false,
   'is_trackback' => false,
   'is_home' => true,
   'is_privacy_policy' => false,
   'is_404' => false,
   'is_embed' => false,
   'is_paged' => false,
   'is_admin' => false,
   'is_attachment' => false,
   'is_singular' => false,
   'is_robots' => false,
   'is_favicon' => false,
   'is_posts_page' => false,
   'is_post_type_archive' => false,
   'query_vars_hash' => '443e714a5290f77b0df02e2f78f50560',
   'query_vars_changed' => false,
   'thumbnails_cached' => false,
   'stopwords' => NULL,
...

ob_start();
foreach ( $wp_query as $key => $value )
{
	if ( gettype($value) == "boolean" )
	{
		var_export($value);
		echo "\t" . $key . "\n";
	}
}
error_log(ob_get_clean(), 3, ABSPATH . "debug.log" );

false	date_query
true	in_the_loop
false	is_single
false	is_preview
false	is_page
false	is_archive
false	is_date
false	is_year
false	is_month
false	is_day
false	is_time
false	is_author
false	is_category
false	is_tag
false	is_tax
false	is_search
false	is_feed
false	is_comment_feed
false	is_trackback
true	is_home
false	is_privacy_policy
false	is_404
false	is_embed
false	is_paged
false	is_admin
false	is_attachment
false	is_singular
false	is_robots
false	is_favicon
false	is_posts_page
false	is_post_type_archive
false	thumbnails_cached

error_log(print_r($post, true), 3, ABSPATH . "debug.log" );

WP_Post Object
(
    [ID] => 1
    [post_author] => 1
    [post_date] => 2020-04-30 12:13:28
    [post_date_gmt] => 2020-04-30 12:13:28
    [post_content] => 
Welcome to WordPress. This is your first post. Edit or delete it, then start writing!
    [post_title] => Hello world!
    [post_excerpt] =>
    [post_status] => publish
    [comment_status] => open
    [ping_status] => open
    [post_password] =>
    [post_name] => hello-world
    [to_ping] =>
    [pinged] =>
    [post_modified] => 2020-04-30 12:13:28
    [post_modified_gmt] => 2020-04-30 12:13:28
    [post_content_filtered] =>
    [post_parent] => 0
    [guid] => http://debug.local/?p=1
    [menu_order] => 0
    [post_type] => post
    [post_mime_type] =>
    [comment_count] => 1
    [filter] => raw
)