What's the best way to minimize the need of run time checks?

[Lawrence D’Oliveiro]

On Monday, August 15, 2016 at 4:31:44 AM UTC+12, BartC wrote:

> But it can't create a new record or struct type at runtime which can 
> then be accessed using normal syntax, in compiled code that already 
> existed before the record was created.

That’s an awful lot of “which ... that” qualification going on.

Remember, Python, which is supposed to be able to do all that, is implemented in C.