Viewing profile — Peaker
Peaker
HN member- Joined
- Tue, Jan 11, 2011, 9:48 PM UTC
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- 3,101
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- 1,524 items
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About Peaker
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Recent public activity
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Comment #17807763
And this is why they need human brains in The Matrix
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Comment #17561618
A type-class or just a callback type, vs pattern-matching, yeah.
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Comment #17536834
There's a huge advantage to not everything being async/await. Knowing exactly when you yield control can give you atomicity and more determinism for free.
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Comment #17536823
Then what you have is not "anything". You have an expression problem: Either each element has some "handler" that does the right thing for that data type. Or you have a set of case…
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Comment #17536814
Everything is of course possible, but at what cost? In my experience, with large projects, you get to pick 2: Dynamic typing Development velocity Reliability I've seen multiple lar…
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Comment #17535414
When do you have lists of lists of elements of any type? What can you even do given such a value?
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Comment #17535411
That's great for functions you just wrote. It's not as great for functions you change in a large code base.
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Comment #17535396
Rust is a great systems language. When I write applications, I don't need a systems language, and Haskell is easier to use. Also, Rust is a great imperative language, it's not as g…
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Comment #17344563
An average US citizen contributes far more to pollution than the average African or Asian.
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Comment #17215646
There are various library-level implementations. Here's the first one that turned up on Google: https://raw.githubusercontent.com/target/row-types/master/ex...
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Comment #17196490
Haskell has reasonable implementations of row types as well.
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Comment #17185343
Life on Earth started within a few hundred million years, not 2 billion years.
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Comment #17182618
I suspect the problem is mentoring. It took me months to get basic Haskell. The people I mentored, though, could clarify any misunderstanding and get explanations from multiple vie…
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Comment #17182607
Haskell record syntax with lenses is workable: import Control.Lens data MyRecord = MyRecord { _a :: Int, _b :: MyRecord } makeLenses ''MyRecord Then you can use it nested like: ove…
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Comment #17174902
I've mentored programmers in Haskell and they were also productive within a few weeks. I'm pretty sure I could get a student to write useful Haskell code in that time span with jus…
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Comment #17038715
That's the Maybe type . The Maybe monad is this: instance Monad Maybe where return = Just Nothing >>= _ = Nothing Just x >>= f = f x (And is not really related to the discussion)
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Comment #17038689
Destroying a language's safety for a single use case is a terrible trade-off. There are various possible solutions for circular structures that do not require destroying all static…
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Comment #16841976
Isn't the bottleneck in any sequential access case the memory bandwidth? IOW: Are the scalar instructions slower than memory bandwidth?
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Comment #16753418
Of course that's true. But Lisp is shitty at controlling memory use, indirections, and manual MM.
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Comment #16729599
They're not really "inheritance". They can do what inheritance can do, and much much more.
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Comment #16725216
I agree about constexpr, templates and exceptions. But C function pointers are not really emulating virtual functions. They're better and more powerful than virtual functions.
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Comment #16578260
I can vet the guys who published this. This is legit, and they haven't published anything that can be used maliciously.
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Comment #16393586
You don't have to write it - you just have to avoid -Wall :-)
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Comment #16390803
Why do they reduce the amount of code? They add the ability for constructors to carry constraints, which aids expressivity in some cases. But the majority of GADT uses purely add s…
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Comment #16387568
But you can do this without S-expressions. DLang, for example, has free-form macros that they weirdly call "mixin" (as in, mixing in some text or declarations into the AST, syntax-…