I am a beginner to wordpress (and to php for that matter).
I am trying to understand some of the basics, and building a little e-commerce store using a plugin called "Jigoshop."
I'm reading through the source files and seeing a bunch of useful functions- things like a "is_featured" function that returns true if the product has a product meta that marks it as featured; or a reference to all products that I can use without having to set up my own by querying the posts and filtering out those that are not products.
I have a custom-template file that I am using for the storefront (homepage), and I would like to access some of these functions to simplify the code I have to write, but it seems I don't have access to them.
My questions is:
Are functions and objects defined in a plugin useable in my theme templates (or custom templates; I'm using a child theme right now)?