The idea is expressivity - your solution seems boilerplatey and doesn't scale to longer expressions. The idea is to make math expressions as easy to write (and

The idea is expressivity - your solution seems boilerplatey and doesn't scale to longer expressions. The idea is to make math expressions as easy to write (and read) as it would be on paper, or at least get as close to it as possible. I don't have a problem with using i or j as the complex constant, as long as the necessary sanity checks exist to make sure it's not misused (e.g., duplicate declaration of i/j, overwriting i/j, etc).