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Rollup merge of #92541 - asquared31415:from-docs, r=m-ou-se

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Mention intent of `From` trait in its docs

This pr is a docs modification to add to the documentation of the `From` trait a note about its intent as a perfect conversion.  This is already stated in the `TryFrom` docs so this is simply adding that information in a more visible way.
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Matthias Krüger 2022-03-09 23:14:10 +01:00 committed by GitHub
commit 2567d0f883
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library/core/src/convert/mod.rs
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@ -300,7 +300,8 @@ pub trait Into<T>: Sized {
/// that encapsulate multiple error types. See the "Examples" section and [the book][book] for more
/// details.
///
/// **Note: This trait must not fail**. If the conversion can fail, use [`TryFrom`].
/// **Note: This trait must not fail**. The `From` trait is intended for perfect conversions.
/// If the conversion can fail or is not perfect, use [`TryFrom`].
///
/// # Generic Implementations
///