Conversation

This Tweet is from a suspended account. Learn more
JT
@jntrnr
Not sure if this rhetorical, but I'd be happy to chat strategy. I suspect your best bet would be to a tool that shows the value of dependent types quickly. What is the biggest benefit in having them, and how does the tool/lang show that. Lots to explore from there.
1
Brendan Zabarauskas
@brendanzab
I think lots of the initial value will come in type-directed meta programming. Lots of examples from Haskell and Rust and C++ that seem awkward and hacky are nice and beautiful with DTs.
2
2
JT
@jntrnr
There may definitely be benefit here, but IME it's a minority that gravitate towards heavy use of macros/templates. You may end up optimising towards a relatively small crowd of developers. Are there non-meta programming examples where DT flourish?
2
1
Graydon Hoare
@graydon_pub
The significant uses I’m aware of all involve the logical reading of the types, deriving and passing ghost proof values to demonstrate system invariants. Which unfortunately quite expands the language design task to proof-assistant engineering, and limits the audience.
2
5
every_jorendorff
@jorendorff
Edwin Brady's Idris book has an early example where you enter a string at runtime giving your database schema (just a tuple type really) and then you've got a database—type safety guaranteed in advance. Vertigo-inspiring. Significant, I dunno. Possibly?
2
1