Sorry if this has been covered before, and also that I'm a complete noob, but I'm thinking about trying a first project in Rust, and trying to learn enough to get started.
My plan is for an on-disk key-value store. I'm going to end up writing arrays of numbers to disk, and then needing to efficiently read them out of a mmap-ed file. So I'm wondering how in Rust you efficiently/zero-copy-ly take some slice of a read-only mmap and treat it as e.g. a vector of ints? I see Vec.from_raw_parts() and Vec.from_raw_buf(), but I don't really understand the difference between them, and also they seem like they just give you a vector of the pointer's type, so I don't know how you use them convert the u8s you get from MemoryMap.data() into a vector of a different type, e.g. 32 bit ints. It seems like there should be a higher level API for this kind of thing, where "casting" a slice of a read-only memory buffer into an immutable vector is not an unsafe operation (I mean, you can do that in Python ;) Either I don't see it in the docs, or it doesn't exist yet; just wondering which :) Thanks! Matt _______________________________________________ Rust-dev mailing list Rust-dev@mozilla.org https://mail.mozilla.org/listinfo/rust-dev