| # Example: Implementing Vec |
| |
| To bring everything together, we're going to write `std::Vec` from scratch. |
| Because all the best tools for writing unsafe code are unstable, this |
| project will only work on nightly (as of Rust 1.9.0). With the exception of the |
| allocator API, much of the unstable code we'll use is expected to be stabilized |
| in a similar form as it is today. |
| |
| However we will generally try to avoid unstable code where possible. In |
| particular we won't use any intrinsics that could make a code a little |
| bit nicer or efficient because intrinsics are permanently unstable. Although |
| many intrinsics *do* become stabilized elsewhere (`std::ptr` and `str::mem` |
| consist of many intrinsics). |
| |
| Ultimately this means our implementation may not take advantage of all |
| possible optimizations, though it will be by no means *naive*. We will |
| definitely get into the weeds over nitty-gritty details, even |
| when the problem doesn't *really* merit it. |
| |
| You wanted advanced. We're gonna go advanced. |
