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Destructuring isn't supported in default trait methods' arguments. #14267

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eddyb opened this issue May 17, 2014 · 3 comments
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Destructuring isn't supported in default trait methods' arguments. #14267

eddyb opened this issue May 17, 2014 · 3 comments
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A-grammar Area: The grammar of Rust A-parser Area: The parsing of Rust source code to an AST A-trait-system Area: Trait system C-feature-request Category: A feature request, i.e: not implemented / a PR.

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@eddyb
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eddyb commented May 17, 2014

Minimal testcase:

trait Foo {
    // error: expected `,` but found `{`
    fn foo(self, Bar {baz}: Bar) {}
}
@steveklabnik steveklabnik added the A-trait-system Area: Trait system label Jan 23, 2015
@huonw huonw added A-grammar Area: The grammar of Rust A-parser Area: The parsing of Rust source code to an AST labels Sep 29, 2015
@steveklabnik
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Triage: no change

@petrochenkov
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This won't be possible (at least without uber-hacks) until anonymous function parameters are removed from the language rust-lang/rfcs#1685.

@Mark-Simulacrum Mark-Simulacrum added the C-feature-request Category: A feature request, i.e: not implemented / a PR. label Jul 21, 2017
@steveklabnik
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steveklabnik commented Sep 24, 2018 •
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Anonymous function parameters have been removed in the 2018 edition, and this now works!

https://play.rust-lang.org/?gist=fd4b27d31be83725a97c1975775dbd38&version=nightly&mode=debug&edition=2018

Closing.

lnicola pushed a commit to lnicola/rust that referenced this issue Mar 13, 2023
@bors
Auto merge of rust-lang#14267 - Veykril:experimental-diagnostics, r=V…
1bfe96e 
…eykril

internal: Mark unresolved field, unresolved method and expected function diagnostics experimental

Our type checking is still not good enough for us to have these diagnostics be enabled by default it seems so let's mark them as experimental for now.
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A-grammar Area: The grammar of Rust A-parser Area: The parsing of Rust source code to an AST A-trait-system Area: Trait system C-feature-request Category: A feature request, i.e: not implemented / a PR.
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@steveklabnik @eddyb @huonw @Mark-Simulacrum @petrochenkov