When to use a Var instead of a function?

Yes, a Var in Clojure is similar to a C pointer. This is poorly documented. Suppose you create a function fred as follows: (defn fred [x] (+ x 1)) There are actually 3 things here. Firstly, fred is a symbol. There is a difference between a symbol fred (no quotes) and the keyword :fred (marked … Read more

JSON-LD Schema.org: Multiple video/image page

If you have multiple items as value of a property, you could use an array: <script type=”application/ld+json”> { “@context”: “http://schema.org”, “@type”: “WebPage”, “video”: [ { “@type”: “VideoObject” }, { “@type”: “VideoObject” } ] } </script> If you have multiple items on the top-level (not as value of a property), you could use a (named) graph … Read more