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Add some links to Disambiguating Function Calls. #829

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Jun 7, 2020
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Add some links to Disambiguating Function Calls. #829

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18 changes: 10 additions & 8 deletions src/expressions/call-expr.md
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Expand Up @@ -25,8 +25,8 @@ let name: &'static str = (|| "Rust")();

## Disambiguating Function Calls

Rust treats all function calls as sugar for a more explicit, fully-qualified
syntax. Upon compilation, Rust will desugar all function calls into the explicit
Rust treats all function calls as sugar for a more explicit, [fully-qualified
syntax]. Upon compilation, Rust will desugar all function calls into the explicit
form. Rust may sometimes require you to qualify function calls with trait,
depending on the ambiguity of a call in light of in-scope items.

Expand All @@ -42,8 +42,8 @@ referent of method or associated function calls. These situations may include:
* Multiple in-scope traits define methods with the same name for the same types
* Auto-`deref` is undesirable; for example, distinguishing between methods on a
smart pointer itself and the pointer's referent
* Methods which take no arguments, like `default()`, and return properties of a
type, like `size_of()`
* Methods which take no arguments, like [`default()`], and return properties of a
type, like [`size_of()`]

To resolve the ambiguity, the programmer may refer to their desired method or
function using more specific paths, types, or traits.
Expand Down Expand Up @@ -93,9 +93,11 @@ fn main() {

Refer to [RFC 132] for further details and motivations.

[`std::ops::Fn`]: ../../std/ops/trait.Fn.html
[`std::ops::FnMut`]: ../../std/ops/trait.FnMut.html
[`std::ops::FnOnce`]: ../../std/ops/trait.FnOnce.html
[RFC 132]: https://github.com/rust-lang/rfcs/blob/master/text/0132-ufcs.md

[_Expression_]: ../expressions.md
[`default()`]: ../../std/default/trait.Default.html#tymethod.default
[`size_of()`]: ../../std/mem/fn.size_of.html
[`std::ops::FnMut`]: ../../std/ops/trait.FnMut.html
[`std::ops::FnOnce`]: ../../std/ops/trait.FnOnce.html
[`std::ops::Fn`]: ../../std/ops/trait.Fn.html
[fully-qualified syntax]: ../paths.md#qualified-paths