writeups
swift
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writeups | swift | |
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4 | 214 | |
49 | 65,806 | |
- | 0.6% | |
0.0 | 10.0 | |
about 1 year ago | 6 days ago | |
Sage | C++ | |
- | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
writeups
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Bitcoin tries to maintain 10 minutes between each block. This gives everyone in the world enough time to update their ledgers. Consistency is difficult when millions of machines are turned on and off every day. And yet, bitcoin is still becoming more reliable by the block
However, averaged over sufficiently long periods of time, the duration of blocks tends to be 600.5958 seconds (10 minutes times 2016/2014, see https://github.com/sipa/writeups/tree/main/bitcoin-difficulty-adjustment for a very mathematical explanation). If the average tends to less than that, it implies the hashrate is on average growing. If the average tends to more than that, it implies the hashrate is average shrinking.
- Private Authentication Protocols
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An optimal algorithm for bounded random integers
You may be interested in this work going in the opposite direction, holding the bias constant and extracting the most ranges from a constant amount of randomness:
https://github.com/sipa/writeups/tree/main/uniform-range-ext...
This work is interesting because generating random bits via strong generators is typically much more expensive than extraction-- so it can be very useful in cases where a number of small random values are needed in a tight loop such as for some kinds of hash table and generating permutations.
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A fast alternative to the modulo reduction
I recently discovered a generalization of this approach, which allows mapping a single hash to multiple independent numbers, each in their own range, while maintaining various uniformity properties.
A write-up is here, in case anyone is interested: https://github.com/sipa/writeups/tree/main/uniform-range-ext...
swift
- Swift: Differentiable Programming Manifesto
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Embedded Swift on the Raspberry Pi Pico
Because of C/C++ interop, and integration with CMake, you can just add Swift to a Zephyr project and it pretty much Just Works. [The docs](https://github.com/apple/swift/blob/main/docs/EmbeddedSwift/...) should mostly apply to the Zephyr SDK as well.
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A Deep Dive Into Observation: A New Way to Boost SwiftUI Performance
Fortunately, the Observation framework is part of the Swift 5.9 standard library. We can learn more information by examining its source code.
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Swift was always going to be part of the OS
They do! See https://github.com/apple/swift/blob/main/docs/LibraryEvoluti...
You can also see an example of what a different high level language integration with Swift ABI looks like here: https://github.com/dotnet/designs/blob/main/proposed/swift-i...
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Differentiable Swift
So is differentiable Swift a package for Swift or is it part of the Swift standard library? The video says go to swift.org but I can't find any info about differentiable Swift on that site.
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Beyond Backpropagation - Higher Order, Forward and Reverse-mode Automatic Differentiation for Tensorken
Swift's Differentiable Programming Manifesto. Swift has a powerful differentiable programming component, integrated with the compiler.
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Kotlin Multiplatform for Android and iOS Apps
You can do the same thing the other way around - https://github.com/apple/swift/blob/main/docs/Android.md.
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This isn’t the way to speed up Rust compile times
Codable (along with other derived conformances like Equatable, Hashable, and RawRepresentable) is indeed built in to the compiler[0], but unlike Serde, it operates during type-checking on a fully-constructed AST (with access to type information), manipulating the AST to insert code. Because it operates at a later stage of compilation and at a much higher level (with access to type information), the work necessary is significantly less.
With ongoing work for Swift macros, it may eventually be possible to rip this code out of the compiler and rewrite it as a macro, though it would need to be a semantic macro[1] rather a syntactic one, which isn't currently possible in Swift[2].
[0] https://github.com/apple/swift/blob/main/lib/Sema/DerivedCon...
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How does Swift implement primitive types in its standard library?
`Int` is a regular struct with a single stored property of type `Builtin.Word` . But the latter is a magical compiler built-in. Source for integer types is generated from this template - https://github.com/apple/swift/blob/9da65ca0a15fdf341649c994b0a77ec3b71f2687/stdlib/public/core/IntegerTypes.swift.gyb
- Catalog of All SwiftUI Changes?
What are some alternatives?
solidity - Solidity, the Smart Contract Programming Language
cpp-lazy - C++11/14/17/20 library for lazy evaluation
Elixir - Elixir is a dynamic, functional language for building scalable and maintainable applications
tree-sitter - An incremental parsing system for programming tools
hummingbird - Hummingbird compiles trained ML models into tensor computation for faster inference.
lobster - The Lobster Programming Language
swift-evolution - This maintains proposals for changes and user-visible enhancements to the Swift Programming Language.
mimalloc - mimalloc is a compact general purpose allocator with excellent performance.
Enzyme.jl - Julia bindings for the Enzyme automatic differentiator
sourcekit-lsp - Language Server Protocol implementation for Swift and C-based languages
dioxus - Fullstack GUI library for web, desktop, mobile, and more.
fastapi - FastAPI framework, high performance, easy to learn, fast to code, ready for production