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B-RFC-implementedBlocker: Approved by a merged RFC and implemented but not stabilized.Blocker: Approved by a merged RFC and implemented but not stabilized.B-unstableBlocker: Implemented in the nightly compiler and unstable.Blocker: Implemented in the nightly compiler and unstable.C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFCF-unboxed_closures`#![feature(unboxed_closures)]``#![feature(unboxed_closures)]`S-tracking-design-concernsStatus: There are blocking design concerns.Status: There are blocking design concerns.T-langRelevant to the language teamRelevant to the language teamT-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.Relevant to the library API team, which will review and decide on the PR/issue.
Description
Tracks stabilization for the Fn*
traits.
Random bugs:
-
FnOnce
doesn't seem to support type-based dispatch (asAdd
, etc. do) #45510 – type-based dispatch not working - Cannot call implementations of the
Fn*
traits on references #42736 –foo()
sugar doesn't work where you have&Foo: FnOnce
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B-RFC-implementedBlocker: Approved by a merged RFC and implemented but not stabilized.Blocker: Approved by a merged RFC and implemented but not stabilized.B-unstableBlocker: Implemented in the nightly compiler and unstable.Blocker: Implemented in the nightly compiler and unstable.C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFCF-unboxed_closures`#![feature(unboxed_closures)]``#![feature(unboxed_closures)]`S-tracking-design-concernsStatus: There are blocking design concerns.Status: There are blocking design concerns.T-langRelevant to the language teamRelevant to the language teamT-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.Relevant to the library API team, which will review and decide on the PR/issue.