risc0-curve25519-dalek-source/src/prelude.rs
Tony Arcieri e57778a5a8 Unify alloc and std cargo features
This change provides a common convention for using allocator-dependent
features with:

    #![cfg(feature = "alloc")]

When available, `Vec` is imported consistently as `prelude::Vec`, which
means modules that need access to `Vec` can simply do:

    use prelude::*;

and if an allocator is available, `Vec` will be in the crate prelude.

This allows all `alloc` vs `std` gating to be handled in `lib.rs`,
`build.rs`, and `prelude.rs` so the rest of the codebase doesn't have to
do any gating whatsoever.
2018-07-20 15:07:07 -07:00

8 lines
227 B
Rust

//! Crate-local prelude (for alloc-dependent features like `Vec`)
// TODO: switch to alloc::prelude
#[cfg(all(feature = "alloc", not(feature = "std")))]
pub use alloc::vec::Vec;
#[cfg(feature = "std")]
pub use std::vec::Vec;