Trait Freeze 

pub unsafe auto trait Freeze { }

🔬This is a nightly-only experimental API. (freeze)

Used to determine whether a type contains any UnsafeCell internally, but not through an indirection. This affects, for example, whether a static of that type is placed in read-only static memory or writable static memory. This can be used to declare that a constant with a generic type will not contain interior mutability, and subsequently allow placing the constant behind references.

Safety

This trait is a core part of the language, it is just expressed as a trait in libcore for convenience. Do not implement it for other types.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl<T> !Freeze for UnsafeCell<T>

where T: ?Sized,

impl<T> Freeze for &T

where T: ?Sized,

impl<T> Freeze for &mut T

where T: ?Sized,

impl<T> Freeze for *const T is !null

where T: ?Sized,

impl<T> Freeze for *const T

where T: ?Sized,

impl<T> Freeze for *mut T is !null

where T: ?Sized,

impl<T> Freeze for *mut T

where T: ?Sized,

impl<T> Freeze for NonZero<T>

where T: ZeroablePrimitive + Freeze,

impl<T> Freeze for PhantomData<T>

where T: ?Sized,

Auto implementors

impl !Freeze for Barrier

impl !Freeze for sp_std::sync::nonpoison::Condvar

impl !Freeze for sp_std::sync::Condvar

impl !Freeze for sp_std::sync::Once

impl !Freeze for OnceState

impl Freeze for Abi

impl Freeze for sp_std::fmt::Alignment

impl Freeze for sp_std::mem::Alignment

impl Freeze for AllocError

impl Freeze for Array

impl Freeze for Assume

impl Freeze for BarrierWaitResult

impl Freeze for Bool

impl Freeze for BorrowError

impl Freeze for BorrowMutError

impl Freeze for Char

impl Freeze for Const

impl Freeze for DebugAsHex

impl Freeze for DefaultHasher

impl Freeze for Duration

impl Freeze for DynTrait

impl Freeze for DynTraitPredicate

impl Freeze for Enum

impl Freeze for Error

impl Freeze for Field

impl Freeze for FieldId

impl Freeze for Float

impl Freeze for FnPtr

impl Freeze for FormattingOptions

impl Freeze for FpCategory

impl Freeze for Generic

impl Freeze for GenericType

impl Freeze for GetDisjointMutError

impl Freeze for Global

impl Freeze for Infallible

impl Freeze for Int

impl Freeze for IntErrorKind

impl Freeze for Layout

impl Freeze for LayoutError

impl Freeze for Lifetime

impl Freeze for OneSidedRangeBound

impl Freeze for sp_std::cmp::Ordering

impl Freeze for sp_std::sync::atomic::Ordering

impl Freeze for ParseBoolError

impl Freeze for ParseFloatError

impl Freeze for ParseIntError

impl Freeze for PhantomPinned

impl Freeze for Pointer

impl Freeze for RandomState

impl Freeze for RangeFull

impl Freeze for RecvError

impl Freeze for sp_std::sync::mpmc::RecvTimeoutError

impl Freeze for Reference

impl Freeze for SearchStep

impl Freeze for Sign

impl Freeze for SipHasher

impl Freeze for Slice

impl Freeze for Str

impl Freeze for Struct

impl Freeze for System

impl Freeze for Trait

impl Freeze for TryFromFloatSecsError

impl Freeze for TryFromIntError

impl Freeze for sp_std::sync::mpmc::TryRecvError

impl Freeze for Tuple

impl Freeze for Type

impl Freeze for TypeId

impl Freeze for TypeKind

impl Freeze for sp_std::mem::type_info::Union

impl Freeze for UnorderedKeyError

impl Freeze for Utf8Error

impl Freeze for Variant

impl Freeze for WaitTimeoutResult

impl Freeze for WouldBlock

impl Freeze for Writer

impl<'a, 'b, const N: usize> Freeze for CharArrayRefSearcher<'a, 'b, N>

impl<'a, 'b> Freeze for CharSliceSearcher<'a, 'b>

impl<'a, 'b> Freeze for DebugList<'a, 'b>

impl<'a, 'b> Freeze for DebugMap<'a, 'b>

impl<'a, 'b> Freeze for DebugSet<'a, 'b>

impl<'a, 'b> Freeze for DebugStruct<'a, 'b>

impl<'a, 'b> Freeze for DebugTuple<'a, 'b>

impl<'a, 'b> Freeze for StrSearcher<'a, 'b>

impl<'a, B> Freeze for Cow<'a, B>

where <B as ToOwned>::Owned: Freeze, B: ?Sized,

impl<'a, F> Freeze for CharPredicateSearcher<'a, F>

where F: Freeze,

impl<'a, I, A> Freeze for sp_std::collections::vec_deque::Splice<'a, I, A>

where I: Freeze,

impl<'a, I, A> Freeze for sp_std::vec::Splice<'a, I, A>

where I: Freeze,

impl<'a, I> Freeze for ByRefSized<'a, I>

impl<'a, K, A> Freeze for sp_std::collections::btree_set::CursorMut<'a, K, A>

impl<'a, K, A> Freeze for sp_std::collections::btree_set::CursorMutKey<'a, K, A>

impl<'a, K, V, A> Freeze for sp_std::collections::btree_map::CursorMut<'a, K, V, A>

impl<'a, K, V, A> Freeze for sp_std::collections::btree_map::CursorMutKey<'a, K, V, A>

impl<'a, K, V, A> Freeze for sp_std::collections::btree_map::Entry<'a, K, V, A>

where K: Freeze, A: Freeze,

impl<'a, K, V, A> Freeze for sp_std::collections::btree_map::OccupiedEntry<'a, K, V, A>

where A: Freeze,

impl<'a, K, V, A> Freeze for OccupiedError<'a, K, V, A>

where K: Freeze, V: Freeze, A: Freeze,

impl<'a, K, V, A> Freeze for sp_std::collections::btree_map::VacantEntry<'a, K, V, A>

where K: Freeze, A: Freeze,

impl<'a, K, V, R, F, A> Freeze for sp_std::collections::btree_map::ExtractIf<'a, K, V, R, F, A>

where F: Freeze, A: Freeze, R: Freeze,

impl<'a, K, V> Freeze for sp_std::collections::btree_map::Cursor<'a, K, V>

impl<'a, K, V> Freeze for sp_std::collections::btree_map::Iter<'a, K, V>

impl<'a, K, V> Freeze for sp_std::collections::btree_map::IterMut<'a, K, V>

impl<'a, K, V> Freeze for Keys<'a, K, V>

impl<'a, K, V> Freeze for sp_std::collections::btree_map::Range<'a, K, V>

impl<'a, K, V> Freeze for RangeMut<'a, K, V>

impl<'a, K, V> Freeze for Values<'a, K, V>

impl<'a, K, V> Freeze for ValuesMut<'a, K, V>

impl<'a, K> Freeze for sp_std::collections::btree_set::Cursor<'a, K>

impl<'a, P> Freeze for MatchIndices<'a, P>

where <P as Pattern>::Searcher<'a>: Freeze,

impl<'a, P> Freeze for Matches<'a, P>

where <P as Pattern>::Searcher<'a>: Freeze,

impl<'a, P> Freeze for RMatchIndices<'a, P>

where <P as Pattern>::Searcher<'a>: Freeze,

impl<'a, P> Freeze for RMatches<'a, P>

where <P as Pattern>::Searcher<'a>: Freeze,

impl<'a, P> Freeze for sp_std::str::RSplit<'a, P>

where <P as Pattern>::Searcher<'a>: Freeze,

impl<'a, P> Freeze for sp_std::str::RSplitN<'a, P>

where <P as Pattern>::Searcher<'a>: Freeze,

impl<'a, P> Freeze for RSplitTerminator<'a, P>

where <P as Pattern>::Searcher<'a>: Freeze,

impl<'a, P> Freeze for sp_std::str::Split<'a, P>

where <P as Pattern>::Searcher<'a>: Freeze,

impl<'a, P> Freeze for sp_std::str::SplitInclusive<'a, P>

where <P as Pattern>::Searcher<'a>: Freeze,

impl<'a, P> Freeze for sp_std::str::SplitN<'a, P>

where <P as Pattern>::Searcher<'a>: Freeze,

impl<'a, P> Freeze for SplitTerminator<'a, P>

where <P as Pattern>::Searcher<'a>: Freeze,

impl<'a, T, A> Freeze for Difference<'a, T, A>

impl<'a, T, A> Freeze for sp_std::collections::vec_deque::Drain<'a, T, A>

impl<'a, T, A> Freeze for sp_std::vec::Drain<'a, T, A>

impl<'a, T, A> Freeze for sp_std::collections::btree_set::Entry<'a, T, A>

where A: Freeze, T: Freeze,

impl<'a, T, A> Freeze for Intersection<'a, T, A>

impl<'a, T, A> Freeze for sp_std::collections::btree_set::OccupiedEntry<'a, T, A>

where A: Freeze,

impl<'a, T, A> Freeze for PeekMut<'a, T, A>

impl<'a, T, A> Freeze for sp_std::collections::btree_set::VacantEntry<'a, T, A>

where T: Freeze, A: Freeze,

impl<'a, T, F, A> Freeze for sp_std::collections::vec_deque::ExtractIf<'a, T, F, A>

where F: Freeze,

impl<'a, T, F, A> Freeze for sp_std::vec::ExtractIf<'a, T, F, A>

where F: Freeze,

impl<'a, T, P> Freeze for ChunkBy<'a, T, P>

where P: Freeze,

impl<'a, T, P> Freeze for ChunkByMut<'a, T, P>

where P: Freeze,

impl<'a, T, P> Freeze for sp_std::slice::RSplit<'a, T, P>

where P: Freeze,

impl<'a, T, P> Freeze for RSplitMut<'a, T, P>

where P: Freeze,

impl<'a, T, P> Freeze for sp_std::slice::RSplitN<'a, T, P>

where P: Freeze,

impl<'a, T, P> Freeze for RSplitNMut<'a, T, P>

where P: Freeze,

impl<'a, T, P> Freeze for sp_std::slice::Split<'a, T, P>

where P: Freeze,

impl<'a, T, P> Freeze for sp_std::slice::SplitInclusive<'a, T, P>

where P: Freeze,

impl<'a, T, P> Freeze for SplitInclusiveMut<'a, T, P>

where P: Freeze,

impl<'a, T, P> Freeze for SplitMut<'a, T, P>

where P: Freeze,

impl<'a, T, P> Freeze for sp_std::slice::SplitN<'a, T, P>

where P: Freeze,

impl<'a, T, P> Freeze for SplitNMut<'a, T, P>

where P: Freeze,

impl<'a, T, R, F, A> Freeze for sp_std::collections::btree_set::ExtractIf<'a, T, R, F, A>

where F: Freeze, A: Freeze, R: Freeze,

impl<'a, T, const N: usize> Freeze for ArrayWindows<'a, T, N>

impl<'a, T> Freeze for Chunks<'a, T>

impl<'a, T> Freeze for ChunksExact<'a, T>

impl<'a, T> Freeze for ChunksExactMut<'a, T>

impl<'a, T> Freeze for ChunksMut<'a, T>

impl<'a, T> Freeze for sp_std::collections::btree_set::Iter<'a, T>

impl<'a, T> Freeze for sp_std::collections::vec_deque::Iter<'a, T>

impl<'a, T> Freeze for sp_std::sync::mpmc::Iter<'a, T>

impl<'a, T> Freeze for sp_std::sync::mpsc::Iter<'a, T>

impl<'a, T> Freeze for sp_std::result::Iter<'a, T>

impl<'a, T> Freeze for sp_std::slice::Iter<'a, T>

impl<'a, T> Freeze for sp_std::collections::vec_deque::IterMut<'a, T>

impl<'a, T> Freeze for sp_std::result::IterMut<'a, T>

impl<'a, T> Freeze for sp_std::slice::IterMut<'a, T>

impl<'a, T> Freeze for sp_std::sync::nonpoison::MappedMutexGuard<'a, T>

where T: ?Sized,

impl<'a, T> Freeze for sp_std::sync::MappedMutexGuard<'a, T>

where T: ?Sized,

impl<'a, T> Freeze for sp_std::sync::nonpoison::MutexGuard<'a, T>

where T: ?Sized,

impl<'a, T> Freeze for sp_std::sync::MutexGuard<'a, T>

where T: ?Sized,

impl<'a, T> Freeze for RChunks<'a, T>

impl<'a, T> Freeze for RChunksExact<'a, T>

impl<'a, T> Freeze for RChunksExactMut<'a, T>

impl<'a, T> Freeze for RChunksMut<'a, T>

impl<'a, T> Freeze for sp_std::collections::btree_set::Range<'a, T>

impl<'a, T> Freeze for ReentrantLockGuard<'a, T>

where T: ?Sized,

impl<'a, T> Freeze for SymmetricDifference<'a, T>

impl<'a, T> Freeze for sp_std::sync::mpmc::TryIter<'a, T>

impl<'a, T> Freeze for sp_std::sync::mpsc::TryIter<'a, T>

impl<'a, T> Freeze for sp_std::collections::btree_set::Union<'a, T>

impl<'a, T> Freeze for Windows<'a, T>

impl<'a, const N: usize> Freeze for CharArraySearcher<'a, N>

impl<'a> Freeze for Arguments<'a>

impl<'a> Freeze for Bytes<'a>

impl<'a> Freeze for CharIndices<'a>

impl<'a> Freeze for CharSearcher<'a>

impl<'a> Freeze for Chars<'a>

impl<'a> Freeze for EncodeUtf16<'a>

impl<'a> Freeze for EscapeAscii<'a>

impl<'a> Freeze for EscapeDebug<'a>

impl<'a> Freeze for EscapeDefault<'a>

impl<'a> Freeze for EscapeUnicode<'a>

impl<'a> Freeze for Formatter<'a>

impl<'a> Freeze for Lines<'a>

impl<'a> Freeze for LinesAny<'a>

impl<'a> Freeze for PhantomContravariantLifetime<'a>

impl<'a> Freeze for PhantomCovariantLifetime<'a>

impl<'a> Freeze for PhantomInvariantLifetime<'a>

impl<'a> Freeze for SplitAsciiWhitespace<'a>

impl<'a> Freeze for SplitWhitespace<'a>

impl<'a> Freeze for Utf8Chunk<'a>

impl<'a> Freeze for Utf8Chunks<'a>

impl<'a> Freeze for Utf8Pattern<'a>

impl<'b, T> Freeze for Ref<'b, T>

where T: ?Sized,

impl<'b, T> Freeze for RefMut<'b, T>

where T: ?Sized,

impl<'rwlock, T> Freeze for sp_std::sync::nonpoison::MappedRwLockReadGuard<'rwlock, T>

where T: ?Sized,

impl<'rwlock, T> Freeze for sp_std::sync::MappedRwLockReadGuard<'rwlock, T>

where T: ?Sized,

impl<'rwlock, T> Freeze for sp_std::sync::nonpoison::MappedRwLockWriteGuard<'rwlock, T>

where T: ?Sized,

impl<'rwlock, T> Freeze for sp_std::sync::MappedRwLockWriteGuard<'rwlock, T>

where T: ?Sized,

impl<'rwlock, T> Freeze for sp_std::sync::nonpoison::RwLockReadGuard<'rwlock, T>

where T: ?Sized,

impl<'rwlock, T> Freeze for sp_std::sync::RwLockReadGuard<'rwlock, T>

where T: ?Sized,

impl<'rwlock, T> Freeze for sp_std::sync::nonpoison::RwLockWriteGuard<'rwlock, T>

where T: ?Sized,

impl<'rwlock, T> Freeze for sp_std::sync::RwLockWriteGuard<'rwlock, T>

where T: ?Sized,

impl<A, B> Freeze for Chain<A, B>

where A: Freeze, B: Freeze,

impl<A, B> Freeze for Zip<A, B>

where A: Freeze, B: Freeze,

impl<A> Freeze for Repeat<A>

where A: Freeze,

impl<A> Freeze for RepeatN<A>

where A: Freeze,

impl<B, C> Freeze for ControlFlow<B, C>

where C: Freeze, B: Freeze,

impl<Dyn> Freeze for DynMetadata<Dyn>

where Dyn: ?Sized,

impl<F> Freeze for sp_std::fmt::FromFn<F>

where F: Freeze,

impl<F> Freeze for sp_std::iter::FromFn<F>

where F: Freeze,

impl<F> Freeze for OnceWith<F>

where F: Freeze,

impl<F> Freeze for RepeatWith<F>

where F: Freeze,

impl<G> Freeze for FromCoroutine<G>

where G: Freeze,

impl<H> Freeze for BuildHasherDefault<H>

impl<I, F, const N: usize> Freeze for MapWindows<I, F, N>

where F: Freeze, I: Freeze, <I as Iterator>::Item: Freeze,

impl<I, F> Freeze for FilterMap<I, F>

where I: Freeze, F: Freeze,

impl<I, F> Freeze for Inspect<I, F>

where I: Freeze, F: Freeze,

impl<I, F> Freeze for Map<I, F>

where I: Freeze, F: Freeze,

impl<I, G> Freeze for IntersperseWith<I, G>

where G: Freeze, I: Freeze, <I as Iterator>::Item: Freeze,

impl<I, P> Freeze for Filter<I, P>

where I: Freeze, P: Freeze,

impl<I, P> Freeze for MapWhile<I, P>

where I: Freeze, P: Freeze,

impl<I, P> Freeze for SkipWhile<I, P>

where I: Freeze, P: Freeze,

impl<I, P> Freeze for TakeWhile<I, P>

where I: Freeze, P: Freeze,

impl<I, St, F> Freeze for Scan<I, St, F>

where I: Freeze, F: Freeze, St: Freeze,

impl<I, U, F> Freeze for FlatMap<I, U, F>

where <U as IntoIterator>::IntoIter: Freeze, I: Freeze, F: Freeze,

impl<I, const N: usize> Freeze for ArrayChunks<I, N>

where I: Freeze, <I as Iterator>::Item: Freeze,

impl<I> Freeze for Cloned<I>

where I: Freeze,

impl<I> Freeze for Copied<I>

where I: Freeze,

impl<I> Freeze for Cycle<I>

where I: Freeze,

impl<I> Freeze for Enumerate<I>

where I: Freeze,

impl<I> Freeze for Flatten<I>

where <<I as Iterator>::Item as IntoIterator>::IntoIter: Freeze, I: Freeze,

impl<I> Freeze for Fuse<I>

where I: Freeze,

impl<I> Freeze for Intersperse<I>

where <I as Iterator>::Item: Sized + Freeze, I: Freeze,

impl<I> Freeze for Peekable<I>

where I: Freeze, <I as Iterator>::Item: Freeze,

impl<I> Freeze for Skip<I>

where I: Freeze,

impl<I> Freeze for StepBy<I>

where I: Freeze,

impl<I> Freeze for Take<I>

where I: Freeze,

impl<Idx> Freeze for sp_std::ops::Range<Idx>

where Idx: Freeze,

impl<Idx> Freeze for RangeFrom<Idx>

where Idx: Freeze,

impl<Idx> Freeze for RangeInclusive<Idx>

where Idx: Freeze,

impl<Idx> Freeze for RangeTo<Idx>

where Idx: Freeze,

impl<Idx> Freeze for RangeToInclusive<Idx>

where Idx: Freeze,

impl<K, V, A> Freeze for BTreeMap<K, V, A>

where A: Freeze,

impl<K, V, A> Freeze for sp_std::collections::btree_map::IntoIter<K, V, A>

where A: Freeze,

impl<K, V, A> Freeze for IntoKeys<K, V, A>

where A: Freeze,

impl<K, V, A> Freeze for IntoValues<K, V, A>

where A: Freeze,

impl<P> Freeze for MaybeDangling<P>

where P: Freeze + ?Sized,

impl<T, A> Freeze for Arc<T, A>

where A: Freeze, T: ?Sized,

impl<T, A> Freeze for BTreeSet<T, A>

where A: Freeze,

impl<T, A> Freeze for Box<T, A>

where A: Freeze, T: ?Sized,

impl<T, A> Freeze for sp_std::collections::btree_set::IntoIter<T, A>

where A: Freeze,

impl<T, A> Freeze for sp_std::collections::vec_deque::IntoIter<T, A>

where A: Freeze,

impl<T, A> Freeze for sp_std::vec::IntoIter<T, A>

where A: Freeze,

impl<T, A> Freeze for Rc<T, A>

where A: Freeze, T: ?Sized,

impl<T, A> Freeze for UniqueArc<T, A>

where A: Freeze, T: ?Sized,

impl<T, A> Freeze for UniqueRc<T, A>

where A: Freeze, T: ?Sized,

impl<T, A> Freeze for Vec<T, A>

where A: Freeze,

impl<T, A> Freeze for VecDeque<T, A>

where A: Freeze,

impl<T, A> Freeze for sp_std::rc::Weak<T, A>

where A: Freeze, T: ?Sized,

impl<T, A> Freeze for sp_std::sync::Weak<T, A>

where A: Freeze, T: ?Sized,

impl<T, E> Freeze for Result<T, E>

where T: Freeze, E: Freeze,

impl<T, F = fn() -> T> !Freeze for LazyCell<T, F>

impl<T, F = fn() -> T> !Freeze for LazyLock<T, F>

impl<T, F> Freeze for DropGuard<T, F>

where T: Freeze, F: Freeze,

impl<T, F> Freeze for Successors<T, F>

where F: Freeze, T: Freeze,

impl<T> !Freeze for Atomic<T>

impl<T> !Freeze for Cell<T>

impl<T> !Freeze for sp_std::sync::nonpoison::Mutex<T>

impl<T> !Freeze for sp_std::sync::Mutex<T>

impl<T> !Freeze for OnceCell<T>

impl<T> !Freeze for OnceLock<T>

impl<T> !Freeze for ReentrantLock<T>

impl<T> !Freeze for RefCell<T>

impl<T> !Freeze for sp_std::sync::nonpoison::RwLock<T>

impl<T> !Freeze for sp_std::sync::RwLock<T>

impl<T> !Freeze for SyncUnsafeCell<T>

impl<T> Freeze for Bound<T>

where T: Freeze,

impl<T> Freeze for Discriminant<T>

where <T as DiscriminantKind>::Discriminant: Freeze,

impl<T> Freeze for Empty<T>

impl<T> Freeze for sp_std::sync::mpmc::IntoIter<T>

impl<T> Freeze for sp_std::sync::mpsc::IntoIter<T>

impl<T> Freeze for sp_std::result::IntoIter<T>

where T: Freeze,

impl<T> Freeze for ManuallyDrop<T>

where T: Freeze + ?Sized,

impl<T> Freeze for MaybeUninit<T>

where T: Freeze,

impl<T> Freeze for NonNull<T>

where T: ?Sized,

impl<T> Freeze for sp_std::iter::Once<T>

where T: Freeze,

impl<T> Freeze for PhantomContravariant<T>

where T: ?Sized,

impl<T> Freeze for PhantomCovariant<T>

where T: ?Sized,

impl<T> Freeze for PhantomInvariant<T>

where T: ?Sized,

impl<T> Freeze for PoisonError<T>

where T: Freeze,

impl<T> Freeze for sp_std::sync::mpmc::Receiver<T>

impl<T> Freeze for sp_std::sync::mpsc::Receiver<T>

impl<T> Freeze for sp_std::sync::oneshot::Receiver<T>

impl<T> Freeze for sp_std::sync::oneshot::RecvTimeoutError<T>

impl<T> Freeze for Rev<T>

where T: Freeze,

impl<T> Freeze for Reverse<T>

where T: Freeze,

impl<T> Freeze for Saturating<T>

where T: Freeze,

impl<T> Freeze for SendError<T>

where T: Freeze,

impl<T> Freeze for SendTimeoutError<T>

where T: Freeze,

impl<T> Freeze for sp_std::sync::mpmc::Sender<T>

impl<T> Freeze for sp_std::sync::mpsc::Sender<T>

impl<T> Freeze for sp_std::sync::oneshot::Sender<T>

impl<T> Freeze for SyncSender<T>

impl<T> Freeze for SyncView<T>

where T: Freeze + ?Sized,

impl<T> Freeze for ThinBox<T>

where T: ?Sized,

impl<T> Freeze for TraitImpl<T>

where T: ?Sized,

impl<T> Freeze for TryLockError<T>

where T: Freeze,

impl<T> Freeze for sp_std::sync::oneshot::TryRecvError<T>

impl<T> Freeze for TrySendError<T>

where T: Freeze,

impl<T> Freeze for Wrapping<T>

where T: Freeze,

impl<T> Freeze for Yeet<T>

where T: Freeze,

impl<Y, R> Freeze for CoroutineState<Y, R>

where Y: Freeze, R: Freeze,