提交 55f9712d 编写于 作者: B bors

Auto merge of #39407 - GuillaumeGomez:convert_module, r=frewsxcv

Add missing url in convert module

r? @frewsxcv
......@@ -18,25 +18,33 @@
//! support arguments of multiple types.
//!
//! - Impl the `As*` traits for reference-to-reference conversions
//! - Impl the `Into` trait when you want to consume the value in the conversion
//! - The `From` trait is the most flexible, useful for value _and_ reference conversions
//! - The `TryFrom` and `TryInto` traits behave like `From` and `Into`, but allow for the
//! - Impl the [`Into`] trait when you want to consume the value in the conversion
//! - The [`From`] trait is the most flexible, useful for value _and_ reference conversions
//! - The [`TryFrom`] and [`TryInto`] traits behave like [`From`] and [`Into`], but allow for the
//! conversion to fail
//!
//! As a library author, you should prefer implementing `From<T>` or `TryFrom<T>` rather than
//! `Into<U>` or `TryInto<U>`, as `From` and `TryFrom` provide greater flexibility and offer
//! equivalent `Into` or `TryInto` implementations for free, thanks to a blanket implementation
//! As a library author, you should prefer implementing [`From<T>`][`From`] or
//! [`TryFrom<T>`][`TryFrom`] rather than [`Into<U>`][`Into`] or [`TryInto<U>`][`TryInto`],
//! as [`From`] and [`TryFrom`] provide greater flexibility and offer
//! equivalent [`Into`] or [`TryInto`] implementations for free, thanks to a blanket implementation
//! in the standard library.
//!
//! # Generic impl
//!
//! - `AsRef` and `AsMut` auto-dereference if the inner type is a reference
//! - `From<U> for T` implies `Into<T> for U`
//! - `TryFrom<U> for T` implies `TryInto<T> for U`
//! - `From` and `Into` are reflexive, which means that all types can `into()`
//! - [`AsRef`] and [`AsMut`] auto-dereference if the inner type is a reference
//! - [`From`]`<U> for T` implies [`Into`]`<T> for U`
//! - [`TryFrom`]`<U> for T` implies [`TryInto`]`<T> for U`
//! - [`From`] and [`Into`] are reflexive, which means that all types can `into()`
//! themselves and `from()` themselves
//!
//! See each trait for usage examples.
//!
//! [`Into`]: trait.Into.html
//! [`From`]: trait.From.html
//! [`TryFrom`]: trait.TryFrom.html
//! [`TryInto`]: trait.TryInto.html
//! [`AsRef`]: trait.AsRef.html
//! [`AsMut`]: trait.AsMut.html
#![stable(feature = "rust1", since = "1.0.0")]
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