Retrieves the navigation to next/previous post, when applicable.

Retrieves the post thumbnail.

Returns the post thumbnail URL.

Retrieve user info by a given field

Retrieve the blog title for the feed title.

Determines whether a post has an image attached.

Is the query for an embedded post?

Determines whether a post type is considered “viewable”.

Checks if a sidebar is registered.

Maps a function to all non-iterable elements of an array or an object.