have_comments()

Function: Whether there are comments to loop over.

Source: wp-includes/query.php:821

the_comment()

Function: Iterate comment index in the comment loop.

Source: wp-includes/query.php:835

Function: Is the query for an existing year archive?

Source: wp-includes/query.php:675

Function: Is the query a 404 (returns no results)?

Source: wp-includes/query.php:695

Function: Is the query for an embedded post?

Source: wp-includes/query.php:715

Function: Is the query the main query?

Source: wp-includes/query.php:735

Function: Is the query for a search?

Source: wp-includes/query.php:558

Function: Is the query for an existing single post?

Source: wp-includes/query.php:587

Function: Is the query for an existing single post of any post type (post, attachment, page, custom post types)?

Source: wp-includes/query.php:615

Function: Is the query for a specific time?

Source: wp-includes/query.php:635