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Modify RFC #803 (type ascription) to make type ascription expressions lvalues #987

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nikomatsakis merged 3 commits into from
Jun 10, 2015
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Modify RFC #803 (type ascription) to make type ascription expressions lvalues #987

nikomatsakis merged 3 commits into from
Jun 10, 2015

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@nrc nrc commented Mar 18, 2015

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nrc commented Mar 18, 2015

cc @eddyb @nikomatsakis

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huonw commented Mar 18, 2015

The history seems strange?

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nrc commented Mar 18, 2015

Yeah, I screwed the history up some how, I'll try to fix it at some point

@nrc nrc self-assigned this Mar 18, 2015
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nrc commented Mar 23, 2015

Fixed the history and addressed @pnkfelix's comment

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Ericson2314 commented Apr 6, 2015

+1 definitely an improvement. Would be nice if for the assignment case (<expr> = ...;), casting to a subtype was eventually supported.

@nrc nrc added the T-lang Relevant to the language team, which will review and decide on the RFC. label May 15, 2015
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nikomatsakis commented Jun 3, 2015

Hear ye, hear ye. This RFC is entering the final comment period.

@nikomatsakis nikomatsakis added the final-comment-period Will be merged/postponed/closed in ~10 calendar days unless new substational objections are raised. label Jun 3, 2015
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huonw commented Jun 3, 2015

Just to clarify, this would allow writing the following?

let x;
x: i32 = 10;

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nikomatsakis reviewed Jun 9, 2015
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text/0803-type-ascription.md Outdated
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This <expr> renders funny. You should add verbatim quotes.

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nrc commented Jun 10, 2015

@huonw yes.

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nrc commented Jun 10, 2015

@nikomatsakis updated the text

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nikomatsakis commented Jun 10, 2015

It's official... the language subteam has decided to accept this RFC.

@nikomatsakis nikomatsakis merged commit d69cf92 into rust-lang:master Jun 10, 2015
@Centril Centril added A-expressions Term language related proposals & ideas A-ascription Type ascription related proposals & ideas A-machine Proposals relating to Rust's abstract machine. A-typesystem Type system related proposals & ideas labels Nov 23, 2018
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A-ascription Type ascription related proposals & ideas A-expressions Term language related proposals & ideas A-machine Proposals relating to Rust's abstract machine. A-typesystem Type system related proposals & ideas final-comment-period Will be merged/postponed/closed in ~10 calendar days unless new substational objections are raised. T-lang Relevant to the language team, which will review and decide on the RFC.

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