The Pythonista in me is happy reading code without type signatures, but I find porting C macros to typed functions is a huge help. Odd.
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Playing with optional type signatures in Python, I realise that the return type is the most important to me.
I'd much rather have a function with only a return type instead of a function with only parameter types. It's often quick to add too.
Today I learnt about Solargraph, an LSP for Ruby which includes an impressive amount of type inference and type checking! https://solargraph.org/guides/type-checking
Type signatures are parsed from doc comments, similar to JSDoc with TypeScript.
TIL that PGP keyservers no longer support 'web of trust' chains of signatures, as they were being spammed by people uploading massive signature chains:
