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101 lines
3.0 KiB
Markdown
101 lines
3.0 KiB
Markdown
# September 9th, 2016
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- Hack week was last week and we skipped the weekly.
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- We moved the weekly to the end of the week to try to cut down on the “wait, what _did_ happen last week?” thing.
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- This ended up being @tclem’s first weekly 👋
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#### What went well?
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@joshvera:
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Hack week:
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- Made a lot of progress on the TypeScript parser.
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- May be able to use that as the basis for a more rigorous JavaScript parser as well.
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This week:
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- Understand RWS & some other diffing algos a lot better than before.
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@rewinfrey:
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- Pairing w/ @tclem.
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- Updating test cases is much more efficient.
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- Modelling effects in Free.
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@tclem:
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- Little fixes.
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- Static linking of ICU in dev.
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- statsd client.
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@robrix:
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- semantic-diffd
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- Docker
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- kubes
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- Markdown
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#### What were the challenges?
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@joshvera:
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- Integrating a pass before RWS. Using constant-time (per-subtree)SES before RWS to match up equal things. There are some ordering problems with the result.
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- Ambiguities in the TypeScript grammar. Possibly due to JS actually being context-sensitive. @maxbrunsfeld advises parsing a superset of the language… but which superset?
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@rewinfrey:
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- Trying to get an effect system in Free. Got it, but tricky.
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- Also picked up an issue with template strings which defies debugging.
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@tclem:
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- > My head hurts by the end of the day.
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- Being challenged by some of the new concepts, the vernacular &c.
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- Hard to know when to jump down the rabbit hole and learn a thing or when to gloss over it.
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- Have a queue of things to read.
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@robrix:
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- Converting between line/column ranges and character ranges.
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#### What did you learn?
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@joshvera:
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- > I became one with the TypeScript grammar.
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- > Maybe we should find a way to have the grammars write themselves.
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- Working on this `effects` package (formerly called `freer`) & its `Eff` type. It uses an open union data structure, which `Data.Record` is sort of an approximation of. `Eff` has this detail where it’s list of function types are “type-aligned.” Every item in the list is a function type where they all chain together, a -> b, b -> c, etc. Adding, removing, & replacing effects is constant-time.
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@rewinfrey:
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- Free, and how to model effects in Free.
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- Straight-up category theory stuff. Compositions of natural transformations &c.
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@tclem:
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- Post about functors, applicatives, and monads shown in pictures.
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- How this manages to be a bridge between pure & stateful functions.
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- Helped explain the optparse-applicative syntax.
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@robrix:
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- CMark exists, which is cool.
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- Parsing/term ingestion had been producing errors for weirdly-formatted for loops &c. Not only were we hitting this on a regular basis, it was also causing confusing/poor change summaries.
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#### Meta
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“What were the challenges?” can be a bit redundant with “what did you learn?” Should we focus this on challenges that we need help with? Gonna give that a try.
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Next week: @joshvera, @rewinfrey, & @robrix are off to ICFP. @tclem may or may not hold weekly solo at his discretion.
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