Old Fashioned Web Analytics in a Newfangled Serverless World

In case you didn’t know, I started a podcast this year: No Manifestos.

One of the interesting things about podcasting is that it’s difficult to know who’s listening. This has even been suggested as the reason for the genre’s success, as it prevents the aggressive tracking and reductionist analytics that have made such a cesspool of the rest of the web.

But occasionally I am curious. At the least, I want to know, roughly, how many people are listening. How can I find out?

Continue reading →

Clojure Don’ts: Thread as

A brief addendum to my last post about Clojure’s threading macros.

As I was saying …

I said you could use as-> to work around the placement of an argument that doesn’t quite fit into a larger pattern of ->. My example was:

(-> results
    (as-> matches (filter winning-match? matches))
    (nth 3)
    (get "total_points"))

This is not a good example, because filter is a lazy sequence function that should more properly be used with ->>. And I warned explicitly against mixing -> and ->>.

Here’s a better example.

Continue reading →

Threading with Style

No, not multi-threading. I’m talking about Clojure’s threading macros, better known as “the arrows.”

The -> (“thread-first”) and ->> (“thread-last”) macros are small but significant innovations in Clojure’s Lisp-like syntax. They support a functional style of programming with return values and make composition intuitive. They answer the two chief complaints about Lisp syntax: too many parentheses and “unnatural” ordering.

Continue reading →