Pharo 4 is a fast-developing project, and like any project that moves fast and has a small community, the development sometimes outstrips the documentation. Since I’ve started to play with Pharo I’ve seen some other newbies pipe up with the same questions that first tripped me up, so I thought I’d jot down a few tips.
Yesterday I had a tiny epiphany about when Emacs calc-mode can be really useful. Here’s a tiny screencast about it.
I can fetch a JSON list of subscribers like this: curl -u $API_LOGIN:$API_PASSWORD https://example.org/subscribers Then there’s jq, which is basically AWK for JSON. The following invocation simply breaks a top-level JSON array into an object per line. cat subscribers.json | jq ‘.’ -c And then there’s Postgres, which has a COPY command that will (by […]
Lately I’ve been handling configuration entirely through environment variables for my apps, as the 12 Factor App recommends, and I can’t recommend this approach enough. As a constraint it helps me think about what parts of a given app actually need to vary from environment to environment, as opposed to what parts could potentially vary. The app I’m working […]
Some notes on screencasting.