pages

A dynamically-sized heap-backed data page. Comprises a user-chosen header and data array packed into a single allocation.

Usage

```rust use pages::Page; // A really crappy replacement for Box> struct Maybe(Page::); impl Maybe { fn new() -> Self { Maybe(Page::new(false, 1)) } fn put(&mut self, value: usize) { self.0.header_mut() = true; // occupied let item: *mut usize = self.0.data_mut()[0].as_mut_ptr(); unsafe { item.write(value); } } fn get(&mut self) -> Option { if !(self.0.header()) { return None; } let item: *mut usize = self.0.datamut()[0].asmutptr(); *self.0.headermut() = false; // free Some(unsafe { *item }) } }

fn main() { let mut maybe = Maybe::new(); asserteq!(maybe.get(), None); maybe.put(42); asserteq!(maybe.get(), Some(42)); } ```

Copyright and License

Copyright (c) 2021 James Laver, pages contributors.

Licensed under Apache License, Version 2.0 (https://www.apache.org/licenses/LICENSE-2.0), with LLVM Exceptions (https://spdx.org/licenses/LLVM-exception.html).

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be licensed as above, without any additional terms or conditions.