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Diffstat (limited to 'third_party/rust/futures-util/src/never.rs')
| -rw-r--r-- | third_party/rust/futures-util/src/never.rs | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/third_party/rust/futures-util/src/never.rs b/third_party/rust/futures-util/src/never.rs new file mode 100644 index 0000000000..e811f97df7 --- /dev/null +++ b/third_party/rust/futures-util/src/never.rs @@ -0,0 +1,18 @@ +//! This module contains the `Never` type. +//! +//! Values of this type can never be created and will never exist. + +/// A type with no possible values. +/// +/// This is used to indicate values which can never be created, such as the +/// error type of infallible futures. +/// +/// This type is a stable equivalent to the `!` type from `std`. +/// +/// This is currently an alias for [`std::convert::Infallible`], but in +/// the future it may be an alias for [`!`][never]. +/// See ["Future compatibility" section of `std::convert::Infallible`][infallible] for more. +/// +/// [never]: https://doc.rust-lang.org/nightly/std/primitive.never.html +/// [infallible]: https://doc.rust-lang.org/nightly/std/convert/enum.Infallible.html#future-compatibility +pub type Never = core::convert::Infallible; |