[dekhn]

Does Cling C++ interpreter do what you want? https://github.com/root-project/cling

[dragandj]

Clojure does what I want.

Perhaps Cling can do something, or not, but I guess that's up to people who prefer Cling to find out and utilize.

[patrec]

Have you used it? When I last tried Cling not that long ago, it wasn't even alpha quality software and given that it has been around for a while, my default assumption would be that this hasn't suddenly improved.

[dekhn]

it's used by ROOT at CERN, so it's unlikely it's "alpha quality software" since it's being used for production science at scale.