systems-language

String interpolation is the last feature from the old C++ compiler that is still unimplemented in the rust compiler.

Once implemented this feature should desugar strings in the form of "... ${expr} ..." into "... " ++ cast expr : string ++ " ...". This looks like the following in the Ast:

FunctionCall(Variable("++"), vec![
    StringLiteral("... "),
    FunctionCall(Variable("++")