rust-fnv
fst
| rust-fnv | fst | |
|---|---|---|
| 2 | 11 | |
| 325 | 1,712 | |
| 1.2% | - | |
| 5.1 | 3.5 | |
| about 1 month ago | 4 months ago | |
| Rust | Rust | |
| Apache License 2.0 | The Unlicense |
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rust-fnv
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How to write slow Rust code. My battle to beat Common Lisp and Java on a phone number encoding problem.
Use faster hashing function (e.g. fnv, there are other potentially faster options as well). By default Rust std uses a DoS-resistant function, which is relatively slow.
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Debian discusses vendoring again
Looking at ripgrep myself, I'm seeing some trivial dependencies. One is fnv. Perhaps you're not aware, but FNV-1a is literally ~4 lines of code. It's about as sophisticated as left-pad. I've written it from scratch a dozen times off the top of my head (the official offset basis and prime are really not special, so you can just generate your own). It would take you about a minute to eliminate it.
fst
- fst: Represent large sets and maps compactly with finite state transducers
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Creating a perfect HashMap from string keys known in advance
I'd point you towards BurntSushi's fst crate: https://github.com/BurntSushi/fst
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How to use mmap safely in Rust?
The fst crate effectively relies on mmap for it to work right. The folks here suggesting you just use the heap might be right, but only if using the heap is actually plausible. If your dictionary is GBs big (an FST might be bigger than available memory), then copying it the heap first would be disastrous.
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Official /r/rust "Who's Hiring" thread for job-seekers and job-offerers [Rust 1.64]
You'll love what we're working on if you're interested in the implementation of:- Tantivy- Meilisearch- Finite State Transducers
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rustc is unacceptably slow compiling long lists of constant slices
Here's an example of longest prefix matching using a FST which I based my approach on: https://github.com/BurntSushi/fst/pull/104/files
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Official /r/rust "Who's Hiring" thread for job-seekers and job-offerers [Rust 1.63]
Finite State Transducers
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Wikit Desktop - A dictionary application using tauri GUI framework
As a result, I have a plan to implement a desktop version from then and I finished today with a beta version. The desktop is based on tauri, and the dictionary index algorithm is FST (it is an awesome index algorithm).
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WordBueno.com online dictionary. Fast, no frills, mobile friendly.
WordBueno’s data is currently derived from Wiktionary. The backend is using Rust’s warp with fst for indexing.
- Show HN: WordBueno: sleek dictionary built with Rust and Svelte
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Speed of Rust vs. C
No you don't. I've written multiple programs that load things instantly off the file system via memory maps. See the fst crate[1], for example, which is designed to work with memory maps.
Rust "works badly with memory mapped files" doesn't mean, "Rust can't use memory mapped files." It means, "it is difficult to reconcile Rust's safety story with memory maps." ripgrep for example uses memory maps because they are faster sometimes, and its safety contract[2] is a bit strained. But it works.
[1] - https://github.com/BurntSushi/fst/
[2] - https://docs.rs/grep-searcher/0.1.7/grep_searcher/struct.Mma...
What are some alternatives?
getopt - POSIX getopt() as a portable header library
smartstring - Compact inlined strings for Rust.
optparse - Portable, reentrant, getopt-like option parser
libskry_r - Lucky imaging library
pre-commit - A framework for managing and maintaining multi-language pre-commit hooks.
itoa - Fast function for printing integer primitives to a decimal string
redgrep - ♥ Janusz Brzozowski
nixpkgs - Nix Packages collection & NixOS
tao - The TAO of cross-platform windowing. A library in Rust built for Tauri.
perl5 - 🐪 The Perl programming language
warp - A super-easy, composable, web server framework for warp speeds.