I'd say there are two learning curves involved. The first is knowing what every symbol does. This sounds like it will be quite hard, but honestly probably takes less than a day. APL really doesn't have a lot of stuff to remember. It just looks a bit weird.
The second learning curve however is the much harder part, learning how to write APL 'idiomatically'. This is mostly true in any language though, especially one in a different paradigm.
The second learning curve however is the much harder part, learning how to write APL 'idiomatically'. This is mostly true in any language though, especially one in a different paradigm.