I 💓 Antipatterns
December 16, 2020
I was reading JuliaLang Antipatterns by Lyndon White.
I’m a guilty man. STB violates (at least) two of these antipatterns pretty consistently.
Dr. White knows more about Julia than I do, and likely ever will. But on these
Over-constraining argument types
Dr. White writes:
I will begin with a bold claim: Type constraints in Julia are only for dispatch. If you don’t have multiple methods for a function, you don’t need any type-constraints. If you must add type-constraints (for dispatch) do so as loosely as possible. I will justify this claim in the following sections.
Applications vs libraries
Ideal organisation - non programming specialists on a spectrum
why not programming specialists plus subject specialists
Defensive programming - spreadsheet error examples
IFS Taxben example - programmer proof.
So - case for strong(ish) possible typing. Can’t rely on comments. Building data structures.
Difference from library/compiler code.
- between generality and clarity - more clarity for an application
- speed and accuracy no trade off and likely fewer eyes on the code