My primary use case was writing network protocols (the stuff I had to deal extensively when implementing ZeroMQ and nanomsg). On one hand you want ultimate perf

My primary use case was writing network protocols (the stuff I had to deal extensively when implementing ZeroMQ and nanomsg). On one hand you want ultimate performance, i.e. no context switchers, manual memory allocation et c. On the other hand, you want the convenience of writing linear code without caring about what to do when function blocks.