slotmap
crates.io
slotmap | crates.io | |
---|---|---|
14 | 662 | |
1,044 | 2,811 | |
- | 1.5% | |
3.4 | 10.0 | |
2 months ago | 3 days ago | |
Rust | Rust | |
zlib License | Apache License 2.0 |
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slotmap
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Tree Borrows - A new aliasing model for Rust
It looks like .get_disjoint_mut() from slotmap failed under stacked borrows, but seems to pass under tree borrows
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Indexing vs Smart Pointers
I think slotmap is meant to solve this exact issue. Basically when you insert into a collection you get an Id:Version tuple as key. When you reuse a slot, next time the key will be Id:Version+1 and when you try to access the removed value by using Id:Version, it will return None. You can think about it as delayed invalidation.
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Hey Rustaceans! Got a question? Ask here (5/2023)!
Dunno about existing implementations, but it looks like it's a feature they'd accept: https://github.com/orlp/slotmap/issues/73
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Unsafe is a bad practice?
It's actually quite easy.
- Rust is more portable than C for pngquant/libimagequant
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Hey Rustaceans! Got an easy question? Ask here (50/2021)!
You can use either slot map or slab to side step rust borrow checker. Example https://github.com/orlp/slotmap/blob/master/examples/rand_meld_heap.rs
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Rust data structures with circular references
I don't know, only have some theories.
1. The name isn't particularly catchy or descriptive. It is the correct name for the data structure, but not too many people know the data structure.
2. People don't even know what they're missing. It's not a very Google-able problem to begin with. Slotmap provides an interesting solution to (circular) ownership and safe allocator / weak pointer design problems, but people don't recognize that they're having them or that slotmap could help.
As an example of this, the doubly linked list example (https://github.com/orlp/slotmap/blob/master/examples/doubly_...) can safely remove nodes from the linked list given their handle, in O(1), even from the middle, completely safely and correctly, even in the presence of double deletions or ABA memory re-use. You can't replicate this with just pointers, without introducing heavy refcounting solutions.
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Is it possible to write anything using 100% safe Rust?
Nope, it's perfectly safe: https://github.com/orlp/slotmap/blob/master/examples/doubly_linked_list.rs.
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Syncing HashMap values amongst User
I think keeping the relationship between child and parent elements in the node graph might be better accommodating better via a psuedo-ECS system, see https://www.reddit.com/r/rust/comments/cnjhup/idiomatic_way_to_reference_parent_struct/. The https://github.com/orlp/slotmap crate looks promising. I think I'm just going to ditch the global shared HashMap in favor of something that can better accommodate child/parent relations.
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Beginner question: does it become easier to write datastructures with complex ownership semantics?
I think the slotmap crate is similar to what you're trying to write: https://github.com/orlp/slotmap
crates.io
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Create a Custom GitHub Action in Rust
Rust has a rich ecosystem of frameworks and libraries that let you read, parse, and manipulate text files, interact with cloud services and databases, and perform any other job that your project's development workflow may require. And because of its strong typing and tight memory management, you are much less likely to write programs that behave unexpectedly in production.
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Rust Keyword Extraction: Creating the YAKE! algorithm from scratch
All the code discussed in this article can be accessed through this repository. For integration with existing projects consider using keyword_extraction crate available on crates.io.
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Migrating a JavaScript frontend to Leptos, a Rust framework
So, be sure to double-check your critical libraries and be sure their alternatives exist in the Rust ecosystem. Thereβs a good chance the crates you need are available in Rust's crates.io repository.
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Learning Rust: A clean start
The previous section was very simple, this section is also very simple but introduces us to cargo which is Rust's package manager, as a JS dev my mind goes straight to NPM.
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#2 Rust - Cargo Package Manager
Now, there has to be a place where all these packages come from. Similar to npmjs registry, where all node packages are registered, stored and retrieved, Rust also has something called crates.io where many helpful packages and dependencies are registered.
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Rust π¦ Installation + Hello World
Before proceeding, let's check https://crates.io/, the official Rust package registry.
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Underestimating rust for my Project.
The most thrilling aspect has been the joy of writing the backend. It's like every struct, enum, and method in Rust forms this interconnected Multiverse of code , which you can see in crates.io which is best Documentation experience I Ever Had.
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Top 10 Rusty Repositories for you to start your Open Source Journey
5. Crates.io
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Project Structure Clarification Coming From Python - With Example
When using crates from eg. crates.io, and also things like std and core
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Cargo has never frustrated me like npm or pip has. Does Cargo ever get frustrating? Does anyone ever find themselves in dependency hell?
Vendoring your packages was very tedious to even remotely get to work with Cargo. I spent a very long time getting Cargo to work together with cargo-local-registry. We vendor crates from crates.io and a custom internal registry.
What are some alternatives?
rust-typed-arena - The arena, a fast but limited type of allocator
docs.rs - crates.io documentation generator
slab - Slab allocator for Rust
plotters - A rust drawing library for high quality data plotting for both WASM and native, statically and realtimely π¦ ππ
multi_mut - Methods on HashMap and BTreeMap for safely getting multiple mutable references to the contained values.
Cargo - The Rust package manager
rust - Rust for the xtensa architecture. Built in targets for the ESP32 and ESP8266
trunk - Build, bundle & ship your Rust WASM application to the web.
stdx - The missing batteries of Rust
gtk4-rs - Rust bindings of GTK 4
nomicon - The Dark Arts of Advanced and Unsafe Rust Programming
Rocket - A web framework for Rust.