The application itself is straightforward; read my recent posts and take each one where the caption starts with xxx/365 and take that data to create a Jekyll post from it. Even though it is so straightforward I still ran into some things that I can imagine will be helpful for others as well.
Getting a date from epoch
It turns out that clj-time is an extremely easy and well done library, but somehow misses the possibility to create a new DateTime from an epoch timestamp. So I wrote a small helper that takes the epoch time and adds the epoch timestamp to it.
Writing an web image to a file
As I wanted to download items from my Instagram feed (images) to my Jekyll blog I needed to download them. Just doing a GET does not suffice of course. In clojure this problem can be solve quite elegantly, returning either nil or throwing an IOException:
Creating proper tests saves a lot of time
Taking the time to write some tests saves a lot of time finding problems in the code. In Cider you can easily run the tests with C-, and you will get direct feedback which is not intrusive at all.