slotmap
rust-bindgen
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slotmap | rust-bindgen | |
---|---|---|
14 | 50 | |
1,031 | 4,070 | |
- | 2.6% | |
3.4 | 8.9 | |
about 2 months ago | 8 days ago | |
Rust | Rust | |
zlib License | BSD 3-clause "New" or "Revised" License |
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.
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
rust-bindgen
- Rust Bindgen
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ffizz: Build a Beautiful C API in Rust
Rust supports two kinds of FFI: calling into Rust from another language; and calling into another language from Rust. Most of the thought and tooling that exists right now is organized around the second kind. For example, bindgen is a popular tool that generates useful Rust wrappers from a C or C++ header file.
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Best practices in creating a Rust API for a C++ library? Seeking advice from those who've done it before.
I have looked into bindgen, but found that it would not be feasible due to OMPL not having a C API, just C++.
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the graphics driver doesn't work on gentoo.
Yes! Are you running LLVM version 16.0.0 or newer, by any chance? I believe this is an issue with some builds of bindgen with newer versions of LLVM. See https://github.com/rust-lang/rust-bindgen/issues/2488
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Any sort of plugin engine with dynamic load ability and any limitations?
On native, you have to define a C API, probably using a header file. Even if both sides are implemented in Rust, they have to speak that C API (documentation).
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How can I use rust libraries in C++
Bindgen has some functionality for direct talk to C++ https://github.com/rust-lang/rust-bindgen
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Issue resolving dependencies when linking C libraries
I am trying to use rust-bindgen (https://github.com/rust-lang/rust-bindgen) to link a static C library (say `libexample.a`) which is compiled in a separate project with CMake. The `libexample.a` depends on other libraries (for example `libcurl.a`) installed on the system.
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I implemented a NASA image compression algorithm
It looks like the guy you're replying too was kind of an ass, but I do want to point out for anyone else reading that that's not actually that much of a technical limitation: rust code can natively call C code. The main thing you need is a translation of the C library's header file so rustc knows what C functions and structs exist, and that can be automatically generated with bindgen.
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Hey Rustaceans! Got a question? Ask here (5/2023)!
It's quite the different approach, but you could consider using bindgen instead.
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Control hardware using c# or c++ API (dll)
Use bindgen or CXX to create Rust bindings for the C or C++ libraries.
What are some alternatives?
rust-typed-arena - The arena, a fast but limited type of allocator
Introducing .NET Multi-platform App UI (MAUI) - .NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.
slab - Slab allocator for Rust
cxx - Safe interop between Rust and C++
multi_mut - Methods on HashMap and BTreeMap for safely getting multiple mutable references to the contained values.
autocxx - Tool for safe ergonomic Rust/C++ interop driven from existing C++ headers
rust - Rust for the xtensa architecture. Built in targets for the ESP32 and ESP8266
JNA - Java Native Access
stdx - The missing batteries of Rust
vulkano - Safe and rich Rust wrapper around the Vulkan API
nomicon - The Dark Arts of Advanced and Unsafe Rust Programming
CC - A small, usability-oriented generic container library.