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Add a mechanism for enabling experimental language features #9304

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brson opened this issue Sep 19, 2013 · 2 comments
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Add a mechanism for enabling experimental language features #9304

brson opened this issue Sep 19, 2013 · 2 comments
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E-easy Call for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue.

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@brson
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brson commented Sep 19, 2013

Crates can be tagged with #[feature(foo)] to enable experimental language features.
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brson commented Sep 19, 2013

Nominating.

This was referenced Sep 19, 2013
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@catamorphism
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accepted backwards-compatible (needed for putting macro-rules behind a flag, which is on backwards-compatible)

alexcrichton added a commit to alexcrichton/rust that referenced this issue Oct 3, 2013
@alexcrichton
Implement feature-gating for the compiler
1c35643 
A few features are now hidden behind various #[feature(...)] directives. These
include struct-like enum variants, glob imports, and macro_rules! invocations.

Closes rust-lang#9304
Closes rust-lang#9305
Closes rust-lang#9306
Closes rust-lang#9331
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E-easy Call for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue.
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