Trait alloc::fmt::Debug

1.0.0 · source ·
pub trait Debug {
    // Required method
    fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>;
}
Expand description

? formatting.

Debug should format the output in a programmer-facing, debugging context.

Generally speaking, you should just derive a Debug implementation.

When used with the alternate format specifier #?, the output is pretty-printed.

For more information on formatters, see the module-level documentation.

This trait can be used with #[derive] if all fields implement Debug. When derived for structs, it will use the name of the struct, then {, then a comma-separated list of each field’s name and Debug value, then }. For enums, it will use the name of the variant and, if applicable, (, then the Debug values of the fields, then ).

Stability

Derived Debug formats are not stable, and so may change with future Rust versions. Additionally, Debug implementations of types provided by the standard library (std, core, alloc, etc.) are not stable, and may also change with future Rust versions.

Examples

Deriving an implementation:

#[derive(Debug)]
struct Point {
    x: i32,
    y: i32,
}

let origin = Point { x: 0, y: 0 };

assert_eq!(format!("The origin is: {origin:?}"), "The origin is: Point { x: 0, y: 0 }");
Run

Manually implementing:

use std::fmt;

struct Point {
    x: i32,
    y: i32,
}

impl fmt::Debug for Point {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_struct("Point")
         .field("x", &self.x)
         .field("y", &self.y)
         .finish()
    }
}

let origin = Point { x: 0, y: 0 };

assert_eq!(format!("The origin is: {origin:?}"), "The origin is: Point { x: 0, y: 0 }");
Run

There are a number of helper methods on the Formatter struct to help you with manual implementations, such as debug_struct.

Types that do not wish to use the standard suite of debug representations provided by the Formatter trait (debug_struct, debug_tuple, debug_list, debug_set, debug_map) can do something totally custom by manually writing an arbitrary representation to the Formatter.

impl fmt::Debug for Point {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "Point [{} {}]", self.x, self.y)
    }
}
Run

Debug implementations using either derive or the debug builder API on Formatter support pretty-printing using the alternate flag: {:#?}.

Pretty-printing with #?:

#[derive(Debug)]
struct Point {
    x: i32,
    y: i32,
}

let origin = Point { x: 0, y: 0 };

assert_eq!(format!("The origin is: {origin:#?}"),
"The origin is: Point {
    x: 0,
    y: 0,
}");
Run

Required Methods§

source

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

Examples
use std::fmt;

struct Position {
    longitude: f32,
    latitude: f32,
}

impl fmt::Debug for Position {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_tuple("")
         .field(&self.longitude)
         .field(&self.latitude)
         .finish()
    }
}

let position = Position { longitude: 1.987, latitude: 2.983 };
assert_eq!(format!("{position:?}"), "(1.987, 2.983)");

assert_eq!(format!("{position:#?}"), "(
    1.987,
    2.983,
)");
Run

Implementors§

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impl Debug for AsciiChar

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impl Debug for core::cmp::Ordering

1.34.0 · source§

impl Debug for Infallible

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impl Debug for Which

1.16.0 · source§

impl Debug for c_void

1.7.0 · source§

impl Debug for IpAddr

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impl Debug for Ipv6MulticastScope

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impl Debug for SocketAddr

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impl Debug for FpCategory

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impl Debug for IntErrorKind

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impl Debug for core::sync::atomic::Ordering

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impl Debug for TryReserveErrorKind

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impl Debug for FromBytesWithNulErrorKind

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impl Debug for SearchStep

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impl Debug for alloc::fmt::Alignment

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impl Debug for bool

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impl Debug for char

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impl Debug for f32

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impl Debug for f64

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impl Debug for i8

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impl Debug for i16

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impl Debug for i32

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impl Debug for i64

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impl Debug for i128

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impl Debug for isize

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impl Debug for !

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impl Debug for str

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impl Debug for u8

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impl Debug for u16

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impl Debug for u32

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impl Debug for u64

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impl Debug for u128

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impl Debug for ()

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impl Debug for usize

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impl Debug for TypeId

1.34.0 · source§

impl Debug for TryFromSliceError

1.16.0 · source§

impl Debug for core::ascii::EscapeDefault

1.13.0 · source§

impl Debug for BorrowError

1.13.0 · source§

impl Debug for BorrowMutError

1.34.0 · source§

impl Debug for CharTryFromError

1.20.0 · source§

impl Debug for ParseCharError

1.9.0 · source§

impl Debug for DecodeUtf16Error

1.20.0 · source§

impl Debug for core::char::EscapeDebug

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impl Debug for core::char::EscapeDefault

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impl Debug for core::char::EscapeUnicode

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impl Debug for ToLowercase

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impl Debug for ToUppercase

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impl Debug for TryFromCharError

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impl Debug for CpuidResult

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impl Debug for __m128

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impl Debug for __m128bh

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impl Debug for __m128d

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impl Debug for __m128i

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impl Debug for __m256

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impl Debug for __m256bh

1.27.0 · source§

impl Debug for __m256d

1.27.0 · source§

impl Debug for __m256i

1.73.0-nightly · source§

impl Debug for __m512

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impl Debug for __m512bh

1.73.0-nightly · source§

impl Debug for __m512d

1.73.0-nightly · source§

impl Debug for __m512i

1.3.0 · source§

impl Debug for CStr

1.69.0 · source§

impl Debug for FromBytesUntilNulError

1.64.0 · source§

impl Debug for FromBytesWithNulError

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impl Debug for SipHasher

1.33.0 · source§

impl Debug for PhantomPinned

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impl Debug for Assume

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impl Debug for Ipv4Addr

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impl Debug for Ipv6Addr

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impl Debug for AddrParseError

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impl Debug for SocketAddrV4

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impl Debug for SocketAddrV6

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impl Debug for ParseFloatError

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impl Debug for ParseIntError

1.34.0 · source§

impl Debug for TryFromIntError

1.34.0 · source§

impl Debug for NonZeroI8

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impl Debug for NonZeroI16

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impl Debug for NonZeroI32

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impl Debug for NonZeroI64

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impl Debug for NonZeroI128

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impl Debug for NonZeroIsize

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impl Debug for NonZeroU8

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impl Debug for NonZeroU16

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impl Debug for NonZeroU32

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impl Debug for NonZeroU64

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impl Debug for NonZeroU128

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impl Debug for NonZeroUsize

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impl Debug for RangeFull

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impl Debug for core::ptr::alignment::Alignment

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impl Debug for TimSortRun

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impl Debug for AtomicBool

1.34.0 · source§

impl Debug for AtomicI8

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impl Debug for AtomicI16

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impl Debug for AtomicI32

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impl Debug for AtomicI64

1.3.0 · source§

impl Debug for AtomicIsize

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impl Debug for AtomicU8

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impl Debug for AtomicU16

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impl Debug for AtomicU32

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impl Debug for AtomicU64

1.3.0 · source§

impl Debug for AtomicUsize

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impl Debug for Context<'_>

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impl Debug for RawWaker

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impl Debug for RawWakerVTable

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impl Debug for Waker

1.27.0 · source§

impl Debug for Duration

1.66.0 · source§

impl Debug for TryFromFloatSecsError

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impl Debug for AllocError

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impl Debug for Global

1.28.0 · source§

impl Debug for Layout

1.50.0 · source§

impl Debug for LayoutError

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impl Debug for SetValZST

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impl Debug for TryReserveError

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impl Debug for CString

1.64.0 · source§

impl Debug for FromVecWithNulError

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impl Debug for IntoStringError

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impl Debug for NulError

1.38.0 · source§

impl Debug for Chars<'_>

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impl Debug for EncodeUtf16<'_>

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impl Debug for ParseBoolError

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impl Debug for Utf8Chunks<'_>

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impl Debug for Utf8Error

1.17.0 · source§

impl Debug for alloc::string::Drain<'_>

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impl Debug for FromUtf8Error

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impl Debug for FromUtf16Error

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impl Debug for String

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impl Debug for Arguments<'_>

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impl Debug for Error

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impl Debug for StringError

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impl Debug for dyn Any

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impl Debug for dyn Any + Send

1.28.0 · source§

impl Debug for dyn Any + Sync + Send

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impl<'a> Debug for Demand<'a>

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impl<'a> Debug for Source<'a>

1.10.0 · source§

impl<'a> Debug for Location<'a>

1.10.0 · source§

impl<'a> Debug for PanicInfo<'a>

1.60.0 · source§

impl<'a> Debug for EscapeAscii<'a>

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impl<'a> Debug for CharSearcher<'a>

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impl<'a> Debug for Bytes<'a>

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impl<'a> Debug for CharIndices<'a>

1.34.0 · source§

impl<'a> Debug for alloc::str::EscapeDebug<'a>

1.34.0 · source§

impl<'a> Debug for alloc::str::EscapeDefault<'a>

1.34.0 · source§

impl<'a> Debug for alloc::str::EscapeUnicode<'a>

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impl<'a> Debug for Lines<'a>

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impl<'a> Debug for LinesAny<'a>

1.34.0 · source§

impl<'a> Debug for SplitAsciiWhitespace<'a>

1.1.0 · source§

impl<'a> Debug for SplitWhitespace<'a>

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impl<'a> Debug for Utf8Chunk<'a>

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

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

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

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impl<'a, 'f> Debug for VaList<'a, 'f>where 'f: 'a,

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impl<'a, A> Debug for core::option::Iter<'a, A>where A: Debug + 'a,

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impl<'a, A> Debug for core::option::IterMut<'a, A>where A: Debug + 'a,

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impl<'a, I> Debug for ByRefSized<'a, I>where I: Debug,

1.21.0 · source§

impl<'a, I: Debug + Iterator + 'a, A: Debug + Allocator + 'a> Debug for Splice<'a, I, A>where I::Item: Debug,

1.5.0 · source§

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

1.2.0 · source§

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

1.5.0 · source§

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

1.2.0 · source§

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

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impl<'a, P> Debug for alloc::str::RSplit<'a, P>where P: Pattern<'a>, <P as Pattern<'a>>::Searcher: Debug,

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impl<'a, P> Debug for alloc::str::RSplitN<'a, P>where P: Pattern<'a>, <P as Pattern<'a>>::Searcher: Debug,

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

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impl<'a, P> Debug for alloc::str::Split<'a, P>where P: Pattern<'a>, <P as Pattern<'a>>::Searcher: Debug,

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impl<'a, P> Debug for alloc::str::SplitInclusive<'a, P>where P: Pattern<'a>, <P as Pattern<'a>>::Searcher: Debug,

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impl<'a, P> Debug for alloc::str::SplitN<'a, P>where P: Pattern<'a>, <P as Pattern<'a>>::Searcher: Debug,

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

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impl<'a, T> Debug for core::result::Iter<'a, T>where T: Debug + 'a,

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impl<'a, T> Debug for core::result::IterMut<'a, T>where T: Debug + 'a,

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impl<'a, T> Debug for Chunks<'a, T>where T: Debug + 'a,

1.31.0 · source§

impl<'a, T> Debug for ChunksExact<'a, T>where T: Debug + 'a,

1.31.0 · source§

impl<'a, T> Debug for ChunksExactMut<'a, T>where T: Debug + 'a,

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impl<'a, T> Debug for ChunksMut<'a, T>where T: Debug + 'a,

1.31.0 · source§

impl<'a, T> Debug for RChunks<'a, T>where T: Debug + 'a,

1.31.0 · source§

impl<'a, T> Debug for RChunksExact<'a, T>where T: Debug + 'a,

1.31.0 · source§

impl<'a, T> Debug for RChunksExactMut<'a, T>where T: Debug + 'a,

1.31.0 · source§

impl<'a, T> Debug for RChunksMut<'a, T>where T: Debug + 'a,

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impl<'a, T> Debug for Windows<'a, T>where T: Debug + 'a,

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impl<'a, T, P> Debug for GroupBy<'a, T, P>where T: 'a + Debug,

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impl<'a, T, P> Debug for GroupByMut<'a, T, P>where T: 'a + Debug,

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impl<'a, T, const N: usize> Debug for alloc::slice::ArrayChunks<'a, T, N>where T: Debug + 'a,

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impl<'a, T, const N: usize> Debug for ArrayChunksMut<'a, T, N>where T: Debug + 'a,

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impl<'a, T, const N: usize> Debug for ArrayWindows<'a, T, N>where T: Debug + 'a,

1.17.0 · source§

impl<'a, T: Debug + 'a> Debug for alloc::collections::btree::set::Range<'a, T>

1.6.0 · source§

impl<'a, T: Debug + 'a, A: Debug + Allocator> Debug for alloc::collections::binary_heap::Drain<'a, T, A>

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impl<'a, T: Debug + Ord, A: Debug + Allocator> Debug for DrainSorted<'a, T, A>

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impl<'a, T: Debug, F, A: Debug + Allocator> Debug for alloc::vec::extract_if::ExtractIf<'a, T, F, A>where F: FnMut(&mut T) -> bool + Debug,

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

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impl<'f> Debug for VaListImpl<'f>

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

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

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

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

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impl<A, Z, Y, X, W, V, U, T> Debug for (A, Z, Y, X, W, V, U, T)where A: Debug, Z: Debug, Y: Debug, X: Debug, W: Debug, V: Debug, U: Debug, T: Debug + ?Sized,

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impl<B> Debug for Cow<'_, B>where B: Debug + ToOwned<Owned: Debug> + ?Sized,

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impl<B, A, Z, Y, X, W, V, U, T> Debug for (B, A, Z, Y, X, W, V, U, T)where B: Debug, A: Debug, Z: Debug, Y: Debug, X: Debug, W: Debug, V: Debug, U: Debug, T: Debug + ?Sized,

1.55.0 · source§

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

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impl<C, B, A, Z, Y, X, W, V, U, T> Debug for (C, B, A, Z, Y, X, W, V, U, T)where C: Debug, B: Debug, A: Debug, Z: Debug, Y: Debug, X: Debug, W: Debug, V: Debug, U: Debug, T: Debug + ?Sized,

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impl<D, C, B, A, Z, Y, X, W, V, U, T> Debug for (D, C, B, A, Z, Y, X, W, V, U, T)where D: Debug, C: Debug, B: Debug, A: Debug, Z: Debug, Y: Debug, X: Debug, W: Debug, V: Debug, U: Debug, T: Debug + ?Sized,

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impl<Dyn> Debug for DynMetadata<Dyn>where Dyn: ?Sized,

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impl<E, D, C, B, A, Z, Y, X, W, V, U, T> Debug for (E, D, C, B, A, Z, Y, X, W, V, U, T)where E: Debug, D: Debug, C: Debug, B: Debug, A: Debug, Z: Debug, Y: Debug, X: Debug, W: Debug, V: Debug, U: Debug, T: Debug + ?Sized,

1.64.0 · source§

impl<F> Debug for PollFn<F>

1.34.0 · source§

impl<F> Debug for FromFn<F>

1.68.0 · source§

impl<F> Debug for OnceWith<F>

1.68.0 · source§

impl<F> Debug for RepeatWith<F>

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impl<F> Debug for CharPredicateSearcher<'_, F>where F: FnMut(char) -> bool,

1.4.0 · source§

impl<F> Debug for Fwhere F: FnPtr,

1.9.0 · source§

impl<H> Debug for BuildHasherDefault<H>

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

1.9.0 · source§

impl<I> Debug for DecodeUtf16<I>where I: Debug + Iterator<Item = u16>,

1.1.0 · source§

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

1.36.0 · source§

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

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

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

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

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impl<I> Debug for Intersperse<I>where I: Debug + Iterator, <I as Iterator>::Item: Clone + Debug,

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

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

1.28.0 · source§

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

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

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impl<I> Debug for MergeIterInner<I>where I: Debug + Iterator, I::Item: Debug,

1.9.0 · source§

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

1.9.0 · source§

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

1.9.0 · source§

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

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

1.9.0 · source§

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

1.57.0 · source§

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

1.9.0 · source§

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

1.9.0 · source§

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

1.9.0 · source§

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

1.29.0 · source§

impl<I, U> Debug for Flatten<I>where I: Debug + Iterator, <I as Iterator>::Item: IntoIterator<IntoIter = U, Item = <U as Iterator>::Item>, U: Debug + Iterator,

1.9.0 · source§

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

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impl<I, const N: usize> Debug for core::iter::adapters::array_chunks::ArrayChunks<I, N>where I: Debug + Iterator, <I as Iterator>::Item: Debug,

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impl<I: Debug + Iterator> Debug for Peeked<I>where I::Item: Debug,

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impl<Idx> Debug for core::ops::range::Range<Idx>where Idx: Debug,

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

1.26.0 · source§

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

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

1.26.0 · source§

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

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impl<K, V, F> Debug for alloc::collections::btree::map::ExtractIf<'_, K, V, F>where K: Debug, V: Debug, F: FnMut(&K, &mut V) -> bool,

1.17.0 · source§

impl<K, V: Debug> Debug for Values<'_, K, V>

1.10.0 · source§

impl<K, V: Debug> Debug for ValuesMut<'_, K, V>

1.54.0 · source§

impl<K, V: Debug, A: Allocator + Clone> Debug for IntoValues<K, V, A>

1.12.0 · source§

impl<K: Debug + Ord, V, A: Allocator + Clone> Debug for VacantEntry<'_, K, V, A>

1.12.0 · source§

impl<K: Debug + Ord, V: Debug, A: Allocator + Clone> Debug for Entry<'_, K, V, A>

1.12.0 · source§

impl<K: Debug + Ord, V: Debug, A: Allocator + Clone> Debug for OccupiedEntry<'_, K, V, A>

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impl<K: Debug + Ord, V: Debug, A: Allocator + Clone> Debug for OccupiedError<'_, K, V, A>

1.17.0 · source§

impl<K: Debug, V> Debug for Keys<'_, K, V>

1.54.0 · source§

impl<K: Debug, V, A: Allocator + Clone> Debug for IntoKeys<K, V, A>

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impl<K: Debug, V: Debug> Debug for alloc::collections::btree::map::Cursor<'_, K, V>

1.17.0 · source§

impl<K: Debug, V: Debug> Debug for alloc::collections::btree::map::Iter<'_, K, V>

1.17.0 · source§

impl<K: Debug, V: Debug> Debug for alloc::collections::btree::map::IterMut<'_, K, V>

1.17.0 · source§

impl<K: Debug, V: Debug> Debug for alloc::collections::btree::map::Range<'_, K, V>

1.17.0 · source§

impl<K: Debug, V: Debug> Debug for RangeMut<'_, K, V>

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impl<K: Debug, V: Debug, A> Debug for alloc::collections::btree::map::CursorMut<'_, K, V, A>

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impl<K: Debug, V: Debug, A: Allocator + Clone> Debug for BTreeMap<K, V, A>

1.17.0 · source§

impl<K: Debug, V: Debug, A: Allocator + Clone> Debug for alloc::collections::btree::map::IntoIter<K, V, A>

1.33.0 · source§

impl<P> Debug for Pin<P>where P: Debug,

1.17.0 · source§

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

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

1.36.0 · source§

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

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impl<T> Debug for *const Twhere T: ?Sized,

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impl<T> Debug for *mut Twhere T: ?Sized,

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impl<T> Debug for &Twhere T: Debug + ?Sized,

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impl<T> Debug for &mut Twhere T: Debug + ?Sized,

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

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impl<T> Debug for (T₁, T₂, …, Tₙ)where T: Debug + ?Sized,

This trait is implemented for tuples up to twelve items long.

1.70.0 · source§

impl<T> Debug for OnceCell<T>where T: Debug,

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impl<T> Debug for Cell<T>where T: Copy + Debug,

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impl<T> Debug for Ref<'_, T>where T: Debug + ?Sized,

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impl<T> Debug for RefCell<T>where T: Debug + ?Sized,

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impl<T> Debug for RefMut<'_, T>where T: Debug + ?Sized,

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impl<T> Debug for SyncUnsafeCell<T>where T: ?Sized,

1.9.0 · source§

impl<T> Debug for UnsafeCell<T>where T: ?Sized,

1.19.0 · source§

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

1.48.0 · source§

impl<T> Debug for Pending<T>

1.48.0 · source§

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

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

1.9.0 · source§

impl<T> Debug for Empty<T>

1.2.0 · source§

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

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impl<T> Debug for PhantomData<T>where T: ?Sized,

1.20.0 · source§

impl<T> Debug for ManuallyDrop<T>where T: Debug + ?Sized,

1.21.0 · source§

impl<T> Debug for Discriminant<T>

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

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

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

1.16.0 · source§

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

1.25.0 · source§

impl<T> Debug for NonNull<T>where T: ?Sized,

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

1.3.0 · source§

impl<T> Debug for AtomicPtr<T>

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

1.9.0 · source§

impl<T> Debug for alloc::slice::Iter<'_, T>where T: Debug,

1.9.0 · source§

impl<T> Debug for alloc::slice::IterMut<'_, T>where T: Debug,

1.41.0 · source§

impl<T> Debug for MaybeUninit<T>

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

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impl<T, F> Debug for LazyCell<T, F>where T: Debug,

1.34.0 · source§

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

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impl<T, F, A: Allocator + Clone> Debug for alloc::collections::btree::set::ExtractIf<'_, T, F, A>where T: Debug, F: FnMut(&T) -> bool,

1.27.0 · source§

impl<T, P> Debug for alloc::slice::RSplit<'_, T, P>where T: Debug, P: FnMut(&T) -> bool,

1.27.0 · source§

impl<T, P> Debug for RSplitMut<'_, T, P>where T: Debug, P: FnMut(&T) -> bool,

1.9.0 · source§

impl<T, P> Debug for alloc::slice::RSplitN<'_, T, P>where T: Debug, P: FnMut(&T) -> bool,

1.9.0 · source§

impl<T, P> Debug for RSplitNMut<'_, T, P>where T: Debug, P: FnMut(&T) -> bool,

1.9.0 · source§

impl<T, P> Debug for alloc::slice::Split<'_, T, P>where T: Debug, P: FnMut(&T) -> bool,

1.51.0 · source§

impl<T, P> Debug for alloc::slice::SplitInclusive<'_, T, P>where T: Debug, P: FnMut(&T) -> bool,

1.51.0 · source§

impl<T, P> Debug for SplitInclusiveMut<'_, T, P>where T: Debug, P: FnMut(&T) -> bool,

1.9.0 · source§

impl<T, P> Debug for SplitMut<'_, T, P>where T: Debug, P: FnMut(&T) -> bool,

1.9.0 · source§

impl<T, P> Debug for alloc::slice::SplitN<'_, T, P>where T: Debug, P: FnMut(&T) -> bool,

1.9.0 · source§

impl<T, P> Debug for SplitNMut<'_, T, P>where T: Debug, P: FnMut(&T) -> bool,

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impl<T, const LANES: usize> Debug for Mask<T, LANES>where T: MaskElement + Debug, LaneCount<LANES>: SupportedLaneCount,

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impl<T, const LANES: usize> Debug for Simd<T, LANES>where LaneCount<LANES>: SupportedLaneCount, T: SimdElement + Debug,

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

1.40.0 · source§

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

1.17.0 · source§

impl<T: Ord + Debug, A: Allocator> Debug for PeekMut<'_, T, A>

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impl<T: Debug + ?Sized, A: Allocator> Debug for Box<T, A>

1.17.0 · source§

impl<T: Debug> Debug for alloc::collections::binary_heap::Iter<'_, T>

1.17.0 · source§

impl<T: Debug> Debug for alloc::collections::btree::set::Iter<'_, T>

1.17.0 · source§

impl<T: Debug> Debug for SymmetricDifference<'_, T>

1.17.0 · source§

impl<T: Debug> Debug for Union<'_, T>

1.17.0 · source§

impl<T: Debug> Debug for alloc::collections::linked_list::Iter<'_, T>

1.17.0 · source§

impl<T: Debug> Debug for alloc::collections::linked_list::IterMut<'_, T>

1.17.0 · source§

impl<T: Debug> Debug for alloc::collections::vec_deque::iter::Iter<'_, T>

1.17.0 · source§

impl<T: Debug> Debug for alloc::collections::vec_deque::iter_mut::IterMut<'_, T>

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impl<T: Debug> Debug for UniqueRc<T>

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impl<T: Debug, A: Allocator + Clone> Debug for DifferenceInner<'_, T, A>

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impl<T: Debug, A: Allocator + Clone> Debug for IntersectionInner<'_, T, A>

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impl<T: Debug, A: Allocator + Clone> Debug for BTreeSet<T, A>

1.17.0 · source§

impl<T: Debug, A: Allocator + Clone> Debug for Difference<'_, T, A>

1.17.0 · source§

impl<T: Debug, A: Allocator + Clone> Debug for Intersection<'_, T, A>

1.4.0 · source§

impl<T: Debug, A: Allocator> Debug for BinaryHeap<T, A>

1.17.0 · source§

impl<T: Debug, A: Allocator> Debug for alloc::collections::binary_heap::IntoIter<T, A>

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impl<T: Debug, A: Allocator> Debug for alloc::collections::linked_list::Cursor<'_, T, A>

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impl<T: Debug, A: Allocator> Debug for alloc::collections::linked_list::CursorMut<'_, T, A>

1.17.0 · source§

impl<T: Debug, A: Allocator> Debug for alloc::collections::linked_list::IntoIter<T, A>

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impl<T: Debug, A: Allocator> Debug for LinkedList<T, A>

1.17.0 · source§

impl<T: Debug, A: Allocator> Debug for alloc::collections::vec_deque::drain::Drain<'_, T, A>

1.17.0 · source§

impl<T: Debug, A: Allocator> Debug for alloc::collections::vec_deque::into_iter::IntoIter<T, A>

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impl<T: Debug, A: Allocator> Debug for VecDeque<T, A>

1.17.0 · source§

impl<T: Debug, A: Allocator> Debug for alloc::vec::drain::Drain<'_, T, A>

1.13.0 · source§

impl<T: Debug, A: Allocator> Debug for alloc::vec::into_iter::IntoIter<T, A>

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impl<T: Debug, A: Allocator> Debug for Vec<T, A>

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impl<T: Debug, A: Debug + Allocator + Clone> Debug for alloc::collections::btree::set::IntoIter<T, A>

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impl<T: Debug, A: Debug + Allocator> Debug for IntoIterSorted<T, A>

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impl<T: Debug, F> Debug for alloc::collections::linked_list::ExtractIf<'_, T, F>where F: FnMut(&mut T) -> bool,

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impl<T: ?Sized + Debug> Debug for ThinBox<T>

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impl<T: ?Sized + Debug> Debug for Rc<T>

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impl<T: ?Sized + Debug> Debug for Arc<T>

1.4.0 · source§

impl<T: ?Sized> Debug for alloc::rc::Weak<T>

1.4.0 · source§

impl<T: ?Sized> Debug for alloc::sync::Weak<T>

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impl<U, T> Debug for (U, T)where U: Debug, T: Debug + ?Sized,

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impl<V, U, T> Debug for (V, U, T)where V: Debug, U: Debug, T: Debug + ?Sized,

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impl<W, V, U, T> Debug for (W, V, U, T)where W: Debug, V: Debug, U: Debug, T: Debug + ?Sized,

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impl<X, W, V, U, T> Debug for (X, W, V, U, T)where X: Debug, W: Debug, V: Debug, U: Debug, T: Debug + ?Sized,

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impl<Y, R> Debug for GeneratorState<Y, R>where Y: Debug, R: Debug,

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impl<Y, X, W, V, U, T> Debug for (Y, X, W, V, U, T)where Y: Debug, X: Debug, W: Debug, V: Debug, U: Debug, T: Debug + ?Sized,

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impl<Z, Y, X, W, V, U, T> Debug for (Z, Y, X, W, V, U, T)where Z: Debug, Y: Debug, X: Debug, W: Debug, V: Debug, U: Debug, T: Debug + ?Sized,

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

impl Debug for Fail

impl Debug for Name

impl Debug for HasArg

impl Debug for Opt

impl Debug for Occur

impl Debug for Optval

impl Debug for Matches

impl<K: Debug, V: Debug, S, A: Allocator + Clone> Debug for RawOccupiedEntryMut<'_, K, V, S, A>

impl<T: Debug, S, A: Allocator + Clone> Debug for VacantEntry<'_, T, S, A>

impl<K, V, S, A: Allocator + Clone> Debug for RawEntryBuilderMut<'_, K, V, S, A>

impl<K: Debug, V: Debug, S, A: Allocator + Clone> Debug for OccupiedEntry<'_, K, V, S, A>

impl<K, V: Debug> Debug for ValuesMut<'_, K, V>

impl<K: Debug, V, S, A: Allocator + Clone> Debug for VacantEntry<'_, K, V, S, A>

impl<T, S, A> Debug for HashSet<T, S, A>where T: Debug, A: Allocator + Clone,

impl<K: Debug, V: Debug, A: Allocator + Clone> Debug for IntoKeys<K, V, A>

impl<K, V, S, A> Debug for HashMap<K, V, S, A>where K: Debug, V: Debug, A: Allocator + Clone,

impl<K: Debug, V> Debug for Keys<'_, K, V>

impl<T: Debug, S, A: Allocator + Clone> Debug for Entry<'_, T, S, A>

impl<K: Debug, V: Debug, A: Allocator + Clone> Debug for IntoIter<K, V, A>

impl<T, S, A> Debug for Intersection<'_, T, S, A>where T: Debug + Eq + Hash, S: BuildHasher, A: Allocator + Clone,

impl<K: Debug> Debug for Iter<'_, K>

impl<K, V, S, A: Allocator + Clone> Debug for RawEntryBuilder<'_, K, V, S, A>

impl<K: Debug, V: Debug, A: Allocator + Clone> Debug for RustcOccupiedEntry<'_, K, V, A>

impl<T, S, A> Debug for Union<'_, T, S, A>where T: Debug + Eq + Hash, S: BuildHasher, A: Allocator + Clone,

impl<K: Debug, V, A: Allocator + Clone> Debug for RustcVacantEntry<'_, K, V, A>

impl<T: Debug, S, A: Allocator + Clone> Debug for OccupiedEntry<'_, T, S, A>

impl<K, V, S, A: Allocator + Clone> Debug for RawVacantEntryMut<'_, K, V, S, A>

impl<K: Borrow<Q>, Q: ?Sized + Debug, V, S, A: Allocator + Clone> Debug for VacantEntryRef<'_, '_, K, Q, V, S, A>

impl<T, S, A> Debug for SymmetricDifference<'_, T, S, A>where T: Debug + Eq + Hash, S: BuildHasher, A: Allocator + Clone,

impl<K, V: Debug, A: Allocator + Clone> Debug for IntoValues<K, V, A>

impl<K, V, A> Debug for Drain<'_, K, V, A>where K: Debug, V: Debug, A: Allocator + Clone,

impl<K: Debug, V: Debug, S, A: Allocator + Clone> Debug for OccupiedError<'_, K, V, S, A>

impl<K, V> Debug for IterMut<'_, K, V>where K: Debug, V: Debug,

impl<K: Debug, V: Debug, S, A: Allocator + Clone> Debug for RawEntryMut<'_, K, V, S, A>

impl<K: Borrow<Q>, Q: ?Sized + Debug, V: Debug, S, A: Allocator + Clone> Debug for EntryRef<'_, '_, K, Q, V, S, A>

impl<K: Debug, A: Allocator + Clone> Debug for Drain<'_, K, A>

impl<K: Borrow<Q>, Q: ?Sized + Debug, V: Debug, S, A: Allocator + Clone> Debug for OccupiedEntryRef<'_, '_, K, Q, V, S, A>

impl<K: Debug, V: Debug> Debug for Iter<'_, K, V>

impl<T, S, A> Debug for Difference<'_, T, S, A>where T: Debug + Eq + Hash, S: BuildHasher, A: Allocator + Clone,

impl<K: Debug, A: Allocator + Clone> Debug for IntoIter<K, A>

impl<K: Debug, V: Debug, A: Allocator + Clone> Debug for RustcEntry<'_, K, V, A>

impl<K, V: Debug> Debug for Values<'_, K, V>

impl<K: Debug, V: Debug, S, A: Allocator + Clone> Debug for Entry<'_, K, V, S, A>

impl<'a> Debug for Children<'a>

impl Debug for TokenTree

impl Debug for Span

impl Debug for Literal

impl Debug for SourceFile

impl Debug for Span

impl Debug for Punct

impl Debug for Group

impl Debug for LitKind

impl Debug for Symbol

impl Debug for Delimiter

impl Debug for Level

impl<Span: Debug> Debug for Diagnostic<Span>

impl Debug for Ident

impl Debug for Diagnostic

impl Debug for Spacing

impl Debug for LexError

impl Debug for ParseError

impl<'a> Debug for Demangle<'a>

impl<K: Debug, V> Debug for IntoKeys<K, V>

impl Debug for OsString

impl<T: Debug> Debug for Position<T>

impl Debug for FileTimes

impl Debug for Sink

impl Debug for UdpSocket

impl Debug for TcpStream

impl Debug for DebugHelper<'_>

impl<T> Debug for Key<T>

impl Debug for ArgsOs

impl<K: Debug, V> Debug for Keys<'_, K, V>

impl Debug for ExitCode

impl Debug for VarError

impl Debug for ReadDir

impl<'a> Debug for PrefixComponent<'a>

impl Debug for State

impl Debug for Output

impl Debug for UnixStream

impl<R> Debug for BufReader<R>where R: ?Sized + Debug,

impl<T, S> Debug for Intersection<'_, T, S>where T: Debug + Eq + Hash, S: BuildHasher,

impl<'a> Debug for CommandArgs<'a>

impl Debug for FileType

impl Debug for Repeat

impl Debug for Args

impl<W: Debug> Debug for IntoInnerError<W>

impl Debug for Token

impl<'a, T: Debug + 'a> Debug for Iter<'a, T>

impl<T: Debug> Debug for IntoIter<T>

impl Debug for LockedPlaceholder

impl Debug for Error

impl<'a, T: Debug + 'a> Debug for TryIter<'a, T>

impl<E> Debug for Report<E>where Report<E>: Display,

impl Debug for TcpStream

impl<'scope, T> Debug for ScopedJoinHandle<'scope, T>

impl Debug for Shutdown

impl Debug for Instant

impl Debug for Command

impl Debug for Args

impl<'a> Debug for SocketAncillary<'a>

impl<'a> Debug for SymbolName<'a>

impl<'a> Debug for Ancestors<'a>

impl<T: 'static> Debug for LocalKey<T>

impl<T: Debug> Debug for Take<T>

impl Debug for ExitStatus

impl<K: Debug, V> Debug for VacantEntry<'_, K, V>

impl<'a> Debug for IoSliceMut<'a>

impl<'a> Debug for CommandEnvs<'a>

impl Debug for Buf

impl Debug for ReadDir

impl<T> Debug for SyncSender<T>

impl Debug for Metadata

impl<K: Debug, V: Debug> Debug for IntoIter<K, V>

impl Debug for BorrowedHandle<'_>

impl Debug for Selected

impl<'a> Debug for Prefix<'a>

impl Debug for ListToken

impl<K, V> Debug for Drain<'_, K, V>where K: Debug, V: Debug,

impl Debug for Instant

impl<T> Debug for JoinHandle<T>

impl Debug for Components<'_>

impl<T> Debug for SendError<T>

impl<'a> Debug for CommandArgs<'a>

impl<K: Debug, V: Debug> Debug for Iter<'_, K, V>

impl Debug for Condvar

impl Debug for PathBuf

impl Debug for SystemTime

impl Debug for Once

impl<K, V, S> Debug for RawEntryBuilder<'_, K, V, S>

impl<K: Debug, V: Debug> Debug for Entry<'_, K, V>

impl<'a> Debug for Incoming<'a>

impl Debug for Custom

impl Debug for ExitStatus

impl Debug for ErrorKind

impl<'a> Debug for Component<'a>

impl Debug for Empty

impl Debug for Internal

impl Debug for File

impl<T> Debug for Sender<T>

impl<T> Debug for Sender<T>

impl Debug for UdpSocket

impl Debug for BorrowedFd<'_>

impl<T: ?Sized + Debug> Debug for MutexGuard<'_, T>

impl Debug for SocketAddr

impl Debug for ExitCode

impl Debug for Context

impl Debug for Path

impl Debug for Stdin

impl<B: Debug> Debug for Split<B>

impl<T: Debug, F> Debug for LazyLock<T, F>

impl<T: Debug> Debug for RwLockWriteGuard<'_, T>

impl Debug for PidFd

impl<'a> Debug for Incoming<'a>

impl Debug for StdoutLock<'_>

impl Debug for OnceState

impl<'a> Debug for IoSlice<'a>

impl<T, S> Debug for Difference<'_, T, S>where T: Debug + Eq + Hash, S: BuildHasher,

impl Debug for Command

impl Debug for ArrayToken

impl Debug for VarsOs

impl Debug for BorrowedBuf<'_>

impl Debug for RecvError

impl Debug for State

impl Debug for ThreadId

impl Debug for Repr

impl Debug for Stdout

impl Debug for CodePoint

impl Debug for File

impl Debug for DirEntry

impl Debug for BorrowedSocket<'_>

impl Debug for SystemTime

impl<K, V: Debug> Debug for IntoValues<K, V>

impl<'a, K, V, F> Debug for ExtractIf<'a, K, V, F>where F: FnMut(&K, &mut V) -> bool,

impl<T: Debug, U: Debug> Debug for Chain<T, U>

impl Debug for Operation

impl<K, V: Debug> Debug for ValuesMut<'_, K, V>

impl<'a> Debug for BytesOrWideString<'a>

impl Debug for OsStr

impl Debug for Wtf8Buf

impl Debug for FILETIME

impl<T: Debug> Debug for OnceLock<T>

impl Debug for FileTimes

impl Debug for Wtf8

impl Debug for Inner

impl Debug for Symbol

impl Debug for SplitPaths<'_>

impl<K: Debug> Debug for Iter<'_, K>

impl<T, S> Debug for HashSet<T, S>where T: Debug,

impl<T: ?Sized + Debug> Debug for Mutex<T>

impl<K, V, S> Debug for HashMap<K, V, S>where K: Debug, V: Debug,

impl<K: Debug> Debug for Drain<'_, K>

impl<'a> Debug for BorrowedCursor<'a>

impl Debug for Backtrace

impl Debug for ZeroToken

impl<T> Debug for Receiver<T>

impl Debug for Stdio

impl<'a, W: Debug + ?Sized + Write> Debug for LineWriterShim<'a, W>

impl<W> Debug for LineWriter<W>where W: Debug + ?Sized + Write,

impl Debug for SeekFrom

impl<T> Debug for PoisonError<T>

impl Debug for Builder

impl Debug for Barrier

impl<K: Debug, V: Debug> Debug for OccupiedEntry<'_, K, V>

impl Debug for StdinLock<'_>

impl<T> Debug for SendTimeoutError<T>

impl<'a, K, F> Debug for ExtractIf<'a, K, F>where F: FnMut(&K) -> bool,

impl<K, V, S> Debug for RawEntryBuilderMut<'_, K, V, S>

impl Debug for MustAbort

impl Debug for Iter<'_>

impl<R: Debug> Debug for Bytes<R>

impl Debug for Frame

impl<K, V, S> Debug for RawVacantEntryMut<'_, K, V, S>

impl Debug for System

impl Debug for FileType

impl Debug for Thread

impl Debug for RawFrame

impl Debug for OwnedFd

impl Debug for StderrLock<'_>

impl<T> Debug for TryLockError<T>

impl<T, S> Debug for SymmetricDifference<'_, T, S>where T: Debug + Eq + Hash, S: BuildHasher,

impl<T: ?Sized + Debug> Debug for RwLock<T>

impl Debug for Child

impl<T> Debug for Receiver<T>

impl<K, V: Debug> Debug for Values<'_, K, V>

impl Debug for DebugHelper<'_>

impl Debug for ChildStdin

impl Debug for CommandEnv

impl Debug for Stderr

impl Debug for Vars

impl<T, S> Debug for Union<'_, T, S>where T: Debug + Eq + Hash, S: BuildHasher,

impl<T> Debug for TrySendError<T>

impl<K: Debug> Debug for IntoIter<K>

impl Debug for Once

impl<K: Debug, V: Debug, S> Debug for RawEntryMut<'_, K, V, S>

impl Debug for LockedPlaceholder

impl Debug for Scope<'_, '_>

impl Debug for DirBuilder

impl Debug for Display<'_>

impl Debug for Arg

impl<B: Debug> Debug for Lines<B>

impl Debug for Slice

impl<T: Debug> Debug for RwLockReadGuard<'_, T>

impl<K, V> Debug for IterMut<'_, K, V>where K: Debug, V: Debug,

impl Debug for DirBuilder

impl<K: Debug, V: Debug> Debug for OccupiedError<'_, K, V>

impl<W> Debug for BufWriter<W>where W: Debug + ?Sized + Write,

impl<K: Debug, V: Debug, S> Debug for RawOccupiedEntryMut<'_, K, V, S>

impl<T: Debug> Debug for Cursor<T>

impl Debug for Options

impl Debug for TestOpts

impl Debug for Error

impl Debug for TestResult

impl Debug for TestType

impl Debug for Summary

impl Debug for TestDesc

impl Debug for TestFn

impl Debug for TestId

impl Debug for Metric

impl Debug for TermInfo

impl Debug for TestName

impl Debug for RunIgnored

impl Debug for TestEvent