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)
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These are values that can appear inside an rvalue (or an index
place). They are intentionally limited to prevent rvalues from
being nested in one another.
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Copy: The value must be available for use afterwards.
This implies that the type of the place must be Copy
; this is true
by construction during build, but also checked by the MIR type checker.
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Move: The value (including old borrows of it) will not be used again.
Safe for values of all types (modulo future developments towards ?Move
).
Correct usage patterns are enforced by the borrow checker for safe code.
Copy
may be converted to Move
to enable "last-use" optimizations.
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Synthesizes a constant value.
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🔬 This is a nightly-only experimental API. (rustc_private
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Convenience helper to make a constant that refers to the fn
with given def-id and substs. Since this is used to synthesize
MIR, assumes user_ty
is None.
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🔬 This is a nightly-only experimental API. (rustc_private
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Performs copy-assignment from source
. Read more
This method tests for self
and other
values to be equal, and is used by ==
. Read more
This method tests for !=
.
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🔬 This is a nightly-only experimental API. (rustc_private
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Formats the value using the given formatter. Read more
🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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True if self
has any late-bound regions that are either bound by binder
or bound by some binder outside of binder
. If binder
is ty::INNERMOST
, this indicates whether there are any late-bound regions that appear free. Read more
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True if this self
has any regions that escape binder
(and hence are not bound by it). Read more
🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
)
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🔬 This is a nightly-only experimental API. (rustc_private
)
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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"Free" regions in this context means that it has any region that is not (a) erased or (b) late-bound. Read more
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True if there any any un-erased free regions.
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)
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Indicates whether this value references only 'global' types/lifetimes that are the same regardless of what fn we are in. This is used for caching. Read more
🔬 This is a nightly-only experimental API. (rustc_private
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True if there are any late-bound regions
🔬 This is a nightly-only experimental API. (rustc_private
)
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A visitor that does not recurse into types, works like fn walk_shallow
in Ty
.
🔬 This is a nightly-only experimental API. (rustc_private
)
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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Creates owned data from borrowed data, usually by cloning. Read more
🔬 This is a nightly-only experimental API. (toowned_clone_into
)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
Immutably borrows from an owned value. Read more
type Error = <U as TryFrom<T>>::Error
🔬 This is a nightly-only experimental API. (try_from
)
The type returned in the event of a conversion error.
🔬 This is a nightly-only experimental API. (try_from
)
Mutably borrows from an owned value. Read more
🔬 This is a nightly-only experimental API. (get_type_id
)
this method will likely be replaced by an associated static
🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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🔬 This is a nightly-only experimental API. (rustc_private
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Create an error for a missing method specialization. Defaults to panicking with type, trait & method names. S
is the encoder/decoder state type, T
is the type being encoded/decoded, and the arguments are the names of the trait and method that should've been overridden. Read more