Trait core::marker::Freeze

source ·
pub unsafe auto trait Freeze { }
🔬This is a nightly-only experimental API. (freeze #121675)
Expand description

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.

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Auto implementors§

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impl !Freeze for AtomicBool

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impl !Freeze for AtomicI8

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impl !Freeze for AtomicI16

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impl !Freeze for AtomicI32

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impl !Freeze for AtomicI64

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impl !Freeze for AtomicIsize

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impl !Freeze for AtomicU8

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impl !Freeze for AtomicU16

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impl !Freeze for AtomicU32

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impl !Freeze for AtomicU64

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impl !Freeze for AtomicUsize

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impl Freeze for AsciiChar

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impl Freeze for core::cmp::Ordering

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impl Freeze for Infallible

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impl Freeze for c_void

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impl Freeze for core::fmt::Alignment

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impl Freeze for BasicBlock

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impl Freeze for UnwindTerminateReason

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impl Freeze for IpAddr

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impl Freeze for Ipv6MulticastScope

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impl Freeze for SocketAddr

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impl Freeze for FpCategory

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impl Freeze for IntErrorKind

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impl Freeze for SearchStep

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impl Freeze for core::sync::atomic::Ordering

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impl Freeze for bool

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impl Freeze for char

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impl Freeze for f32

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impl Freeze for f64

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impl Freeze for i8

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impl Freeze for i16

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impl Freeze for i32

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impl Freeze for i64

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impl Freeze for i128

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impl Freeze for isize

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impl Freeze for str

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impl Freeze for u8

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impl Freeze for u16

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impl Freeze for u32

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impl Freeze for u64

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impl Freeze for u128

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impl Freeze for ()

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impl Freeze for usize

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impl Freeze for AllocError

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impl Freeze for Layout

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impl Freeze for LayoutError

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impl Freeze for TypeId

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impl Freeze for float64x1_t

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impl Freeze for float64x1x2_t

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impl Freeze for float64x1x3_t

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impl Freeze for float64x1x4_t

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impl Freeze for float64x2_t

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impl Freeze for float64x2x2_t

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impl Freeze for float64x2x3_t

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impl Freeze for float64x2x4_t

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impl Freeze for SY

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impl Freeze for float32x2_t

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impl Freeze for float32x2x2_t

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impl Freeze for float32x2x3_t

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impl Freeze for float32x2x4_t

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impl Freeze for float32x4_t

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impl Freeze for float32x4x2_t

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impl Freeze for float32x4x3_t

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impl Freeze for float32x4x4_t

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impl Freeze for int8x4_t

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impl Freeze for int8x8_t

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impl Freeze for int8x8x2_t

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impl Freeze for int8x8x3_t

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impl Freeze for int8x8x4_t

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impl Freeze for int8x16_t

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impl Freeze for int8x16x2_t

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impl Freeze for int8x16x3_t

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impl Freeze for int8x16x4_t

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impl Freeze for int16x2_t

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impl Freeze for int16x4_t

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impl Freeze for int16x4x2_t

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impl Freeze for int16x4x3_t

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impl Freeze for int16x4x4_t

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impl Freeze for int16x8_t

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impl Freeze for int16x8x2_t

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impl Freeze for int16x8x3_t

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impl Freeze for int16x8x4_t

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impl Freeze for int32x2_t

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impl Freeze for int32x2x2_t

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impl Freeze for int32x2x3_t

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impl Freeze for int32x2x4_t

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impl Freeze for int32x4_t

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impl Freeze for int32x4x2_t

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impl Freeze for int32x4x3_t

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impl Freeze for int32x4x4_t

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impl Freeze for int64x1_t

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impl Freeze for int64x1x2_t

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impl Freeze for int64x1x3_t

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impl Freeze for int64x1x4_t

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impl Freeze for int64x2_t

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impl Freeze for int64x2x2_t

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impl Freeze for int64x2x3_t

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impl Freeze for int64x2x4_t

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impl Freeze for poly8x8_t

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impl Freeze for poly8x8x2_t

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impl Freeze for poly8x8x3_t

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impl Freeze for poly8x8x4_t

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impl Freeze for poly8x16_t

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impl Freeze for poly8x16x2_t

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impl Freeze for poly8x16x3_t

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impl Freeze for poly8x16x4_t

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impl Freeze for poly16x4_t

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impl Freeze for poly16x4x2_t

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impl Freeze for poly16x4x3_t

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impl Freeze for poly16x4x4_t

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impl Freeze for poly16x8_t

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impl Freeze for poly16x8x2_t

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impl Freeze for poly16x8x3_t

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impl Freeze for poly16x8x4_t

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impl Freeze for poly64x1_t

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impl Freeze for poly64x1x2_t

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impl Freeze for poly64x1x3_t

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impl Freeze for poly64x1x4_t

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impl Freeze for poly64x2_t

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impl Freeze for poly64x2x2_t

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impl Freeze for poly64x2x3_t

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impl Freeze for poly64x2x4_t

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impl Freeze for uint8x4_t

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impl Freeze for uint8x8_t

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impl Freeze for uint8x8x2_t

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impl Freeze for uint8x8x3_t

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impl Freeze for uint8x8x4_t

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impl Freeze for uint8x16_t

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impl Freeze for uint8x16x2_t

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impl Freeze for uint8x16x3_t

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impl Freeze for uint8x16x4_t

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impl Freeze for uint16x2_t

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impl Freeze for uint16x4_t

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impl Freeze for uint16x4x2_t

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impl Freeze for uint16x4x3_t

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impl Freeze for uint16x4x4_t

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impl Freeze for uint16x8_t

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impl Freeze for uint16x8x2_t

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impl Freeze for uint16x8x3_t

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impl Freeze for uint16x8x4_t

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impl Freeze for uint32x2_t

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impl Freeze for uint32x2x2_t

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impl Freeze for uint32x2x3_t

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impl Freeze for uint32x2x4_t

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impl Freeze for uint32x4_t

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impl Freeze for uint32x4x2_t

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impl Freeze for uint32x4x3_t

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impl Freeze for uint32x4x4_t

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impl Freeze for uint64x1_t

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impl Freeze for uint64x1x2_t

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impl Freeze for uint64x1x3_t

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impl Freeze for uint64x1x4_t

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impl Freeze for uint64x2_t

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impl Freeze for uint64x2x2_t

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impl Freeze for uint64x2x3_t

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impl Freeze for uint64x2x4_t

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impl Freeze for vector_bool_char

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impl Freeze for vector_bool_int

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impl Freeze for vector_bool_long

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impl Freeze for vector_bool_short

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impl Freeze for vector_double

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impl Freeze for vector_float

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impl Freeze for vector_signed_char

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impl Freeze for vector_signed_int

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impl Freeze for vector_signed_long

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impl Freeze for vector_signed_short

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impl Freeze for vector_unsigned_char

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impl Freeze for vector_unsigned_int

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impl Freeze for vector_unsigned_long

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impl Freeze for vector_unsigned_short

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impl Freeze for v128

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impl Freeze for CpuidResult

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impl Freeze for __m128

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impl Freeze for __m128bh

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impl Freeze for __m128d

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impl Freeze for __m128i

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impl Freeze for __m256

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impl Freeze for __m256bh

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impl Freeze for __m256d

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impl Freeze for __m256i

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impl Freeze for __m512

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impl Freeze for __m512bh

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impl Freeze for __m512d

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impl Freeze for __m512i

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impl Freeze for TryFromSliceError

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impl Freeze for core::ascii::EscapeDefault

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impl Freeze for BorrowError

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impl Freeze for BorrowMutError

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impl Freeze for CharTryFromError

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impl Freeze for DecodeUtf16Error

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impl Freeze for core::char::EscapeDebug

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impl Freeze for core::char::EscapeDefault

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impl Freeze for core::char::EscapeUnicode

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impl Freeze for ParseCharError

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impl Freeze for ToLowercase

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impl Freeze for ToUppercase

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impl Freeze for TryFromCharError

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impl Freeze for FromBytesUntilNulError

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impl Freeze for FromBytesWithNulError

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impl Freeze for CStr

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impl Freeze for Error

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impl Freeze for SipHasher

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impl Freeze for ReturnToArg

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impl Freeze for UnwindActionArg

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impl Freeze for Assume

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impl Freeze for AddrParseError

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impl Freeze for Ipv4Addr

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impl Freeze for Ipv6Addr

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impl Freeze for SocketAddrV4

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impl Freeze for SocketAddrV6

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impl Freeze for ParseFloatError

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impl Freeze for ParseIntError

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impl Freeze for TryFromIntError

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impl Freeze for RangeFull

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impl Freeze for core::ptr::Alignment

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impl Freeze for TimSortRun

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impl Freeze for ParseBoolError

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impl Freeze for Utf8Error

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impl Freeze for LocalWaker

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impl Freeze for RawWaker

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impl Freeze for RawWakerVTable

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impl Freeze for Waker

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impl Freeze for Duration

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impl Freeze for TryFromFloatSecsError

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impl Freeze for PhantomPinned

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impl<'a> !Freeze for Request<'a>

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impl<'a> Freeze for Source<'a>

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impl<'a> Freeze for core::ffi::c_str::Bytes<'a>

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

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

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impl<'a> Freeze for BorrowedCursor<'a>

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impl<'a> Freeze for Location<'a>

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impl<'a> Freeze for PanicInfo<'a>

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

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

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impl<'a> Freeze for core::str::Bytes<'a>

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

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

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

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impl<'a> Freeze for core::str::EscapeDebug<'a>

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impl<'a> Freeze for core::str::EscapeDefault<'a>

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impl<'a> Freeze for core::str::EscapeUnicode<'a>

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

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

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

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

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

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

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impl<'a> Freeze for Context<'a>

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impl<'a> Freeze for ContextBuilder<'a>

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

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

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

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

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

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

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

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

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impl<'a, 'f> Freeze for VaList<'a, 'f>

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impl<'a, A> Freeze for core::option::Iter<'a, A>

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impl<'a, A> Freeze for core::option::IterMut<'a, A>

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

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

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

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

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

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

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impl<'a, P> Freeze for core::str::RSplit<'a, P>
where <P as Pattern<'a>>::Searcher: Freeze,

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impl<'a, P> Freeze for core::str::RSplitN<'a, P>
where <P as Pattern<'a>>::Searcher: Freeze,

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

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impl<'a, P> Freeze for core::str::Split<'a, P>
where <P as Pattern<'a>>::Searcher: Freeze,

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impl<'a, P> Freeze for core::str::SplitInclusive<'a, P>
where <P as Pattern<'a>>::Searcher: Freeze,

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impl<'a, P> Freeze for core::str::SplitN<'a, P>
where <P as Pattern<'a>>::Searcher: Freeze,

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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impl<'a, T, const N: usize> Freeze for core::slice::ArrayChunks<'a, T, N>

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

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

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

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impl<'b, T: ?Sized> Freeze for Ref<'b, T>

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impl<'b, T: ?Sized> Freeze for RefMut<'b, T>

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impl<'data> Freeze for BorrowedBuf<'data>

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impl<'f> Freeze for VaListImpl<'f>

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impl<A> Freeze for Repeat<A>
where A: Freeze,

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impl<A> Freeze for RepeatN<A>
where A: Freeze,

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impl<A> Freeze for core::option::IntoIter<A>
where A: Freeze,

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

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

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

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impl<Dyn: ?Sized> Freeze for DynMetadata<Dyn>

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impl<F> Freeze for FormatterFn<F>
where F: Freeze,

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impl<F> Freeze for PollFn<F>
where F: Freeze,

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impl<F> Freeze for FromFn<F>
where F: Freeze,

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impl<F> Freeze for OnceWith<F>
where F: Freeze,

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impl<F> Freeze for RepeatWith<F>
where F: Freeze,

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impl<H> Freeze for BuildHasherDefault<H>

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impl<I> Freeze for FromIter<I>
where I: Freeze,

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impl<I> Freeze for DecodeUtf16<I>
where I: Freeze,

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impl<I> Freeze for Cloned<I>
where I: Freeze,

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impl<I> Freeze for Copied<I>
where I: Freeze,

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impl<I> Freeze for Cycle<I>
where I: Freeze,

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impl<I> Freeze for Enumerate<I>
where I: Freeze,

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

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impl<I> Freeze for Fuse<I>
where I: Freeze,

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impl<I> Freeze for Intersperse<I>
where I: Freeze, <I as Iterator>::Item: Freeze,

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impl<I> Freeze for Peekable<I>
where I: Freeze, <I as Iterator>::Item: Freeze,

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impl<I> Freeze for Skip<I>
where I: Freeze,

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impl<I> Freeze for StepBy<I>
where I: Freeze,

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impl<I> Freeze for Take<I>
where I: Freeze,

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

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

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

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impl<I, F, const N: usize> Freeze for MapWindows<I, F, N>
where F: Freeze, I: Freeze, <I as Iterator>::Item: Freeze,

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impl<I, G> Freeze for IntersperseWith<I, G>
where G: Freeze, I: Freeze, <I as Iterator>::Item: Freeze,

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

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

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

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

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

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

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impl<I, const N: usize> Freeze for core::iter::ArrayChunks<I, N>
where I: Freeze, <I as Iterator>::Item: Freeze,

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impl<Idx> Freeze for Range<Idx>
where Idx: Freeze,

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impl<Idx> Freeze for RangeFrom<Idx>
where Idx: Freeze,

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impl<Idx> Freeze for RangeInclusive<Idx>
where Idx: Freeze,

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impl<Idx> Freeze for RangeTo<Idx>
where Idx: Freeze,

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impl<Idx> Freeze for RangeToInclusive<Idx>
where Idx: Freeze,

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impl<Ptr> Freeze for Pin<Ptr>
where Ptr: Freeze,

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impl<Ret, T> Freeze for fn(T₁, T₂, …, Tₙ) -> Ret

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impl<T> !Freeze for Cell<T>

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impl<T> !Freeze for OnceCell<T>

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impl<T> !Freeze for RefCell<T>

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impl<T> !Freeze for SyncUnsafeCell<T>

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impl<T> !Freeze for AtomicPtr<T>

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impl<T> Freeze for Bound<T>
where T: Freeze,

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impl<T> Freeze for Option<T>
where T: Freeze,

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impl<T> Freeze for Poll<T>
where T: Freeze,

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impl<T> Freeze for [T]
where T: Freeze,

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impl<T> Freeze for (T₁, T₂, …, Tₙ)
where T: Freeze,

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impl<T> Freeze for Reverse<T>
where T: Freeze,

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impl<T> Freeze for Pending<T>

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impl<T> Freeze for Ready<T>
where T: Freeze,

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impl<T> Freeze for Empty<T>

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impl<T> Freeze for Once<T>
where T: Freeze,

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impl<T> Freeze for Rev<T>
where T: Freeze,

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impl<T> Freeze for Discriminant<T>

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impl<T> Freeze for NonZero<T>
where T: Freeze,

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impl<T> Freeze for Saturating<T>
where T: Freeze,

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impl<T> Freeze for Wrapping<T>
where T: Freeze,

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impl<T> Freeze for Yeet<T>
where T: Freeze,

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impl<T> Freeze for AssertUnwindSafe<T>
where T: Freeze,

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impl<T> Freeze for core::result::IntoIter<T>
where T: Freeze,

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impl<T> Freeze for MaybeUninit<T>
where T: Freeze,

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

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

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

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impl<T, const N: usize> Freeze for [T; N]
where T: Freeze,

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impl<T, const N: usize> Freeze for core::array::IntoIter<T, N>
where T: Freeze,

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impl<T, const N: usize> Freeze for Mask<T, N>
where T: Freeze,

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impl<T, const N: usize> Freeze for Simd<T, N>
where T: Freeze,

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impl<T, const N: usize> Freeze for [MaybeUninit<T>; N]
where T: Freeze,

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impl<T: ?Sized> Freeze for ManuallyDrop<T>
where T: Freeze,

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impl<T: ?Sized> Freeze for NonNull<T>

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impl<T: ?Sized> Freeze for Exclusive<T>
where T: Freeze,

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

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impl<const N: usize> Freeze for LaneCount<N>

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impl<const N: usize> Freeze for GetManyMutError<N>

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impl<const N: usize> Freeze for [u8; N]