hobbes
flare-timing
| hobbes | flare-timing | |
|---|---|---|
| 4 | 1 | |
| 1,175 | 12 | |
| 0.1% | - | |
| 5.7 | 7.6 | |
| 4 months ago | about 1 year ago | |
| C | Haskell | |
| Apache License 2.0 | Mozilla Public License 2.0 |
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hobbes
- Hobbes: Comprehensions
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My Thoughts on OCaml
https://github.com/morganstanley/hobbes
Things like structural equality and ordering are user functions here rather than magic internal definitions (e.g. equality is defined as a type class, and type class instances can deconstruct algebraic types at compile time to decide how to implement instances). But evaluation is eager by default, so it's pretty easy to reason about performance. And data structures can be persisted to files and/or shared transparently in memory with C/C++ programs without translation, also very convenient for the places where this was used. Actually we built some very big and complicated time series databases with it, used in both pre and post trade settings where ~15% of daily US equity trades happen. So I think these observations are useful and have passed through some pretty significant real tests.
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C++ source code generation (focus on financial market data)
Have a look at Hobbes from Morgan Stanley
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Peridot: A functional language based on two-level type theory
https://github.com/morganstanley/hobbes
This approach has several benefits, but there's a lot of appeal also to the way they're doing it, to have the same PL across stages (and then maybe have more than just two stages).
flare-timing
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Heavy Application in reflex ?
I've got one. It's the frontend of each comp linked to from https://flaretiming.com/. Its source can be found in the app-view folder.
What are some alternatives?
dream-html - Type-safe markup rendering, form validation, and routing for OCaml Dream web framework
jord - Geographical Position Calculations
sexp - S-expression swiss knife
geodesy - Libraries of geodesy functions implemented in JavaScript
hail - A service for pull-based continuous deployment based on hydra.
reflex-dom - Web applications without callbacks or side-effects. Reflex-DOM brings the power of functional reactive programming (FRP) to the web. Build HTML and other Document Object Model (DOM) data with a pure functional interface.