slotmap
winsafe-examples
slotmap | winsafe-examples | |
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14 | 16 | |
1,039 | 57 | |
- | - | |
3.4 | 6.4 | |
2 months ago | 14 days ago | |
Rust | Rust | |
zlib License | MIT License |
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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
winsafe-examples
- Is Rust worth it for non low-level applications
- Rust for Windows.
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Unsafe is a bad practice?
You might be interested in winsafe. There are a few examples how it can be used without unsafe code.
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Why Rust for general application development?
If you think this is nuts, just wait until you find out that people are writing high level, native desktop applications in pure Rust!
- What beginner-level projects can I do now that I've just started learning rust?
- How to play video with Rust
- An experiment: a native Windows video player using DirectShow
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How useful is Rust for quick prototyping++?
The easy path is just to build your structs normally, letting the burden of Rc/Arcing everything to the user. My first design was like this. Once I decided to bury this stuff inside the library, then my headaches began. But the API ends up being very ergonomic.
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What is an idiomatic rust equivalent of C# events?
For example, a button click, where self.wnd is the parent window, looks like this:
- Is there any GUI framework or interface in RUST?
What are some alternatives?
rust-typed-arena - The arena, a fast but limited type of allocator
Native Windows GUI - A light windows GUI toolkit for rust
slab - Slab allocator for Rust
setuptools-rust - Setuptools plugin for Rust support
multi_mut - Methods on HashMap and BTreeMap for safely getting multiple mutable references to the contained values.
winlamb - A lightweight modern C++11 library for Win32 API, using lambdas to handle Windows messages.
rust - Rust for the xtensa architecture. Built in targets for the ESP32 and ESP8266
winsafe - Windows API and GUI in safe, idiomatic Rust.
stdx - The missing batteries of Rust
rust-how-do-i-start - Hand curated advice and pointers for getting started with Rust
nomicon - The Dark Arts of Advanced and Unsafe Rust Programming
komorebi - A tiling window manager for Windows 🍉