diff options
Diffstat (limited to 'library/std/src/primitive_docs.rs')
-rw-r--r-- | library/std/src/primitive_docs.rs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/library/std/src/primitive_docs.rs b/library/std/src/primitive_docs.rs index 08ffc407ead..8266e899011 100644 --- a/library/std/src/primitive_docs.rs +++ b/library/std/src/primitive_docs.rs @@ -550,6 +550,7 @@ impl Copy for () { /// /// ``` /// # #![feature(rustc_private)] +/// #[allow(unused_extern_crates)] /// extern crate libc; /// /// use std::mem; @@ -610,6 +611,9 @@ mod prim_pointer {} /// if the element type allows it. As a stopgap, trait implementations are /// statically generated up to size 32. /// +/// Arrays of sizes from 1 to 12 (inclusive) implement [`From<Tuple>`], where `Tuple` +/// is a homogenous [prim@tuple] of appropriate length. +/// /// Arrays coerce to [slices (`[T]`)][slice], so a slice method may be called on /// an array. Indeed, this provides most of the API for working with arrays. /// @@ -672,6 +676,13 @@ mod prim_pointer {} /// move_away(roa); /// ``` /// +/// Arrays can be created from homogenous tuples of appropriate length: +/// +/// ``` +/// let tuple: (u32, u32, u32) = (1, 2, 3); +/// let array: [u32; 3] = tuple.into(); +/// ``` +/// /// # Editions /// /// Prior to Rust 1.53, arrays did not implement [`IntoIterator`] by value, so the method call @@ -774,6 +785,7 @@ mod prim_pointer {} /// [`Borrow`]: borrow::Borrow /// [`BorrowMut`]: borrow::BorrowMut /// [slice pattern]: ../reference/patterns.html#slice-patterns +/// [`From<Tuple>`]: convert::From #[stable(feature = "rust1", since = "1.0.0")] mod prim_array {} @@ -1000,7 +1012,9 @@ mod prim_str {} /// * [`Debug`] /// * [`Default`] /// * [`Hash`] +/// * [`From<[T; N]>`][from] /// +/// [from]: convert::From /// [`Debug`]: fmt::Debug /// [`Hash`]: hash::Hash /// @@ -1051,6 +1065,13 @@ mod prim_str {} /// assert_eq!(y, 5); /// ``` /// +/// Homogenous tuples can be created from arrays of appropriate length: +/// +/// ``` +/// let array: [u32; 3] = [1, 2, 3]; +/// let tuple: (u32, u32, u32) = array.into(); +/// ``` +/// #[stable(feature = "rust1", since = "1.0.0")] mod prim_tuple {} |