Day 93: Polling for Photos in OwnYourSwarm #100DaysOfIndieWeb
An interesting feature of the Swarm app is how it handles photos uploaded to checkins. If you check in and attach a photo, the checkin is actually created before the photo is uploaded. If you're on a spotty Internet connection, you'll see this because your checkin will exist and you'll get points for it, but there won't be a photo yet. The app will then continue to upload the photo separately, retrying if it fails. This is actually a really great app design on the part of Foursquare, but does lead to some tricks with the API.
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