miniblog.

Twitter treats #foo and $bar as special syntax due to emergent behaviour of users. I keep seeing similar emergent features in other domains, e.g. airport wifi using '_Foo Wifi' to ensure it's sorted first. Ideally there'd be a priority flag, so a printer is never shown first.

Python and JS can both execute code when loading libraries (`import foo` and `require('foo')` respectively). Yet the Python CLI apps I've seen have to do much more work to ensure good startup performance (e.g. `myapp --help` not being slow). I'm not sure why.

Given coverage data, how would you build a tool to decide which untested parts of a codebase most need tests? The best I can think of is using profile data to ensure hotspots are tested. Not sure if it's ideal though: top level code and well-exercised logic would be highlighted.