Tyler Mandry 8709ac81d3 Rollup merge of #79858 - sasurau4:doc/update-unstable-book-const-fn, r=oli-obk ... Update const-fn doc in unstable-book Fix #79691 I couldn't find suitable examples. It seems that `const_fn` feature-gate used only following place. 810324d1f3/compiler/rustc_ast_passes/src/feature_gate.rs (L560-L562) And example like following emits [E0379](https://doc.rust-lang.org/error-index.html#E0379). ```rust #![feature(const_fn)] trait Foo { const fn bar() -> Self; } ``` Any other suitable example exists, please let me know.		2020-12-10 21:33:12 -08:00
..
book@a190438d77	Update books	2020-11-30 17:25:23 -08:00
edition-guide@b91a9a881e	Update books	2020-11-11 19:35:50 -08:00
embedded-book@ba34b8a968	Update books	2020-11-30 17:25:23 -08:00
man
nomicon@d8383b65f7	Update books	2020-11-30 17:25:23 -08:00
reference@a8afdca5d0	Update books	2020-11-30 17:25:23 -08:00
rust-by-example@236c734a2c	Update books	2020-11-30 17:25:23 -08:00
rustc	Rollup merge of #79573 - he32:master, r=jonas-schievink	2020-12-01 10:50:25 +00:00
rustc-dev-guide@7adfab42ba
rustdoc
unstable-book	Rollup merge of #79858 - sasurau4:doc/update-unstable-book-const-fn, r=oli-obk	2020-12-10 21:33:12 -08:00
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