The article discusses the absence of a built-in method in Rust for finding an element's position in a slice and presents a concise implementation for this. While the simple implementation is functional, it can be optimized significantly, achieving a performance boost of nine times by restructuring the code to aid compiler vectorization. The memchr crate is mentioned as a highly optimized alternative. Ultimately, the post aims to demonstrate how to reach comparable performance using native Rust and encourage reliance on LLVM's capabilities rather than architecture-specific instructions.
Rust does not provide a built-in method to find the position of an element in a slice, but this can be implemented easily and efficiently.
Optimizing the find method can make it 9 times faster by restructuring code to aid the LLVM compiler's vectorization capabilities.
The memchr crate by BurntSushi presents a highly optimized solution for finding an element in a slice, showcasing impressive performance.
The goal of this discussion is to achieve optimized performance using pure Rust and LLVM, without resorting to architecture-specific instructions.
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