rustc_lint::let_underscore

Struct LetUnderscore

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pub struct LetUnderscore;

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impl Clone for LetUnderscore

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fn clone(&self) -> LetUnderscore

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'tcx> LateLintPass<'tcx> for LetUnderscore

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fn check_local(&mut self, cx: &LateContext<'_>, local: &LetStmt<'_>)

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fn check_body(&mut self, _: &LateContext<'tcx>, _: &Body<'tcx>)

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fn check_body_post(&mut self, _: &LateContext<'tcx>, _: &Body<'tcx>)

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fn check_crate(&mut self, _: &LateContext<'tcx>)

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fn check_crate_post(&mut self, _: &LateContext<'tcx>)

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fn check_mod(&mut self, _: &LateContext<'tcx>, _: &'tcx Mod<'tcx>, _: HirId)

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fn check_foreign_item( &mut self, _: &LateContext<'tcx>, _: &'tcx ForeignItem<'tcx>, )

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fn check_item(&mut self, _: &LateContext<'tcx>, _: &'tcx Item<'tcx>)

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fn check_item_post(&mut self, _: &LateContext<'tcx>, _: &'tcx Item<'tcx>)

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fn check_block(&mut self, _: &LateContext<'tcx>, _: &'tcx Block<'tcx>)

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fn check_block_post(&mut self, _: &LateContext<'tcx>, _: &'tcx Block<'tcx>)

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fn check_stmt(&mut self, _: &LateContext<'tcx>, _: &'tcx Stmt<'tcx>)

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fn check_arm(&mut self, _: &LateContext<'tcx>, _: &'tcx Arm<'tcx>)

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fn check_pat(&mut self, _: &LateContext<'tcx>, _: &'tcx Pat<'tcx>)

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fn check_expr(&mut self, _: &LateContext<'tcx>, _: &'tcx Expr<'tcx>)

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fn check_expr_post(&mut self, _: &LateContext<'tcx>, _: &'tcx Expr<'tcx>)

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fn check_ty(&mut self, _: &LateContext<'tcx>, _: &'tcx Ty<'tcx>)

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fn check_generic_param( &mut self, _: &LateContext<'tcx>, _: &'tcx GenericParam<'tcx>, )

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fn check_generics(&mut self, _: &LateContext<'tcx>, _: &'tcx Generics<'tcx>)

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fn check_poly_trait_ref( &mut self, _: &LateContext<'tcx>, _: &'tcx PolyTraitRef<'tcx>, )

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fn check_fn( &mut self, _: &LateContext<'tcx>, _: FnKind<'tcx>, _: &'tcx FnDecl<'tcx>, _: &'tcx Body<'tcx>, _: Span, _: LocalDefId, )

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fn check_trait_item(&mut self, _: &LateContext<'tcx>, _: &'tcx TraitItem<'tcx>)

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fn check_impl_item(&mut self, _: &LateContext<'tcx>, _: &'tcx ImplItem<'tcx>)

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fn check_impl_item_post( &mut self, _: &LateContext<'tcx>, _: &'tcx ImplItem<'tcx>, )

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fn check_struct_def( &mut self, _: &LateContext<'tcx>, _: &'tcx VariantData<'tcx>, )

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fn check_field_def(&mut self, _: &LateContext<'tcx>, _: &'tcx FieldDef<'tcx>)

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fn check_variant(&mut self, _: &LateContext<'tcx>, _: &'tcx Variant<'tcx>)

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fn check_path(&mut self, _: &LateContext<'tcx>, _: &Path<'tcx>, _: HirId)

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fn check_attribute(&mut self, _: &LateContext<'tcx>, _: &'tcx Attribute)

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fn check_attributes(&mut self, _: &LateContext<'tcx>, _: &'tcx [Attribute])

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fn check_attributes_post(&mut self, _: &LateContext<'tcx>, _: &'tcx [Attribute])

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impl LintPass for LetUnderscore

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fn name(&self) -> &'static str

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fn get_lints(&self) -> LintVec

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impl Copy for LetUnderscore

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Blanket Implementations§

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impl<T> Aligned for T

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const ALIGN: Alignment = _

Alignment of Self.
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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

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fn allocate_on(self, arena: &'tcx Arena<'tcx>) -> &'tcx mut T

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fn allocate_from_iter( arena: &'tcx Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'tcx mut [T]

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impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

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fn allocate_on(self, arena: &'tcx Arena<'tcx>) -> &'tcx mut T

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fn allocate_from_iter( arena: &'tcx Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'tcx mut [T]

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T, R> CollectAndApply<T, R> for T

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fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to f(&iter.collect::<Vec<_>>()).

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type Output = R

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impl<T> Filterable for T

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fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>

Creates a filterable data provider with the given name for debugging. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<P> IntoQueryParam<P> for P

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fn into_query_param(self) -> P

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impl<T> MaybeResult<T> for T

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type Error = !

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fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

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fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

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fn upcast(self, interner: I) -> U

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impl<I, T> UpcastFrom<I, T> for T

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fn upcast_from(from: T, _tcx: I) -> T

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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<Tcx, T> Value<Tcx> for T
where Tcx: DepContext,

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default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed, ) -> T

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

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impl<'a, T> Captures<'a> for T
where T: ?Sized,

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where T: 'static,

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impl<T> MaybeSendSync for T
where T: Send + Sync,

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Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

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