Trait std::fmt::Debug

#[lang = "debug_trait"]
pub trait Debug {
    fn fmt(&self, f: &mut Formatter) -> Result<(), Error>;
}

? 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 ).

Examples

Deriving an implementation:

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

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

println!("The origin is: {:?}", origin);

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 {
        write!(f, "Point {{ x: {}, y: {} }}", self.x, self.y)
    }
}

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

println!("The origin is: {:?}", origin);

This outputs:

The origin is: Point { x: 0, y: 0 }

There are a number of debug_* methods on Formatter to help you with manual implementations, such as debug_struct.

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 };

println!("The origin is: {:#?}", origin);

This outputs:

The origin is: Point {
    x: 0,
    y: 0
}

Required Methods

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 {
        write!(f, "({:?}, {:?})", self.longitude, self.latitude)
    }
}

assert_eq!("(1.987, 2.983)".to_owned(),
           format!("{:?}", Position { longitude: 1.987, latitude: 2.983, }));

Implementations on Foreign Types

impl Debug for __m256d

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

impl Debug for CannotReallocInPlace

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

impl Debug for Layout

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

impl Debug for InvalidSequence

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

impl Debug for TryFromSliceError

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

impl Debug for __m128d

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

impl Debug for __m64

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

impl Debug for AllocErr

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

impl Debug for __m256i

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

impl Debug for __m128i

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

impl Debug for Excess

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

impl<T> Debug for NonZero<T> where     T: Zeroable + Debug,

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

impl Debug for Alignment

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

impl Debug for __m128

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

impl Debug for __m256

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

impl<'a> Debug for Utf8LossyChunk<'a>

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

impl Debug for Utf8Lossy

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

Implementors

• impl Debug for Utf8Error

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

• impl Debug for i8x8

• impl Debug for char

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

• impl Debug for u8x64

• impl<'a> Debug for Location<'a>

• impl<Ret, A, B> Debug for unsafe fn(A, B) -> Ret

• impl<T> Debug for [T; 17] where     T: Debug,

• impl Debug for ParseFloatError

• impl Debug for i16

• impl<'a> Debug for Arguments<'a>

• impl<Ret, A, B, C> Debug for unsafe extern "C" fn(A, B, C, ...) -> Ret

• impl Debug for i16x8

• impl Debug for b8x4

• impl<T> Debug for [T; 22] where     T: Debug,

• impl Debug for u16

• impl<Ret, A, B, C, D, E, F, G> Debug for unsafe extern "C" fn(A, B, C, D, E, F, G, ...) -> Ret

• impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Debug for unsafe fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret

• impl Debug for f32x16

• impl<Ret, A, B, C, D> Debug for unsafe extern "C" fn(A, B, C, D) -> Ret

• impl<T> Debug for [T; 10] where     T: Debug,

• impl<Ret, A, B, C, D, E> Debug for unsafe extern "C" fn(A, B, C, D, E) -> Ret

• impl<Ret, A, B> Debug for extern "C" fn(A, B) -> Ret

• impl Debug for SearchStep

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

• impl Debug for f64

• impl<T5, T6, T7, T8, T9, T10, T11> Debug for (T5, T6, T7, T8, T9, T10, T11) where     T10: Debug,     T11: Debug + ?Sized,     T5: Debug,     T6: Debug,     T7: Debug,     T8: Debug,     T9: Debug,

• impl<T> Debug for [T; 29] where     T: Debug,

• impl<'a, T, P> Debug for std::slice::RSplitN<'a, T, P> where     P: FnMut(&T) -> bool,     T: 'a + Debug,

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

• impl Debug for f64x2

• impl Debug for u16x16

• impl<Ret, A, B, C, D, E, F> Debug for unsafe extern "C" fn(A, B, C, D, E, F, ...) -> Ret

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

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

• impl Debug for CollectionAllocErr

• impl Debug for b8x2

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

• impl Debug for AtomicI8

• impl<'a> Debug for CharIndices<'a>

• impl Debug for u16x2

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

• impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Debug for unsafe fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret

• impl Debug for i128

• impl<A> Debug for std::option::IntoIter<A> where     A: Debug,

• impl<Ret, A, B, C, D, E, F, G> Debug for extern "C" fn(A, B, C, D, E, F, G) -> Ret

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

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

• impl Debug for BorrowMutError

• impl<T> Debug for [T; 30] where     T: Debug,

• impl<T> Debug for [T; 8] where     T: Debug,

• impl<'a> Debug for LinesAny<'a>

• impl Debug for std::ascii::EscapeDefault

• impl<'a, T, P> Debug for std::slice::Split<'a, T, P> where     P: FnMut(&T) -> bool,     T: 'a + Debug,

• impl Debug for i32x2

• impl Debug for AtomicBool

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

• impl Debug for ()

• impl<Ret, A, B> Debug for extern "C" fn(A, B, ...) -> Ret

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

• impl<T> Debug for [T; 9] where     T: Debug,

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

• impl Debug for AtomicU32

• impl<'a> Debug for std::str::Chars<'a>

• impl Debug for f32x4

• impl Debug for u64x2

• impl<Ret, A, B, C> Debug for unsafe fn(A, B, C) -> Ret

• impl<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> Debug for (T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11) where     T1: Debug,     T10: Debug,     T11: Debug + ?Sized,     T2: Debug,     T3: Debug,     T4: Debug,     T5: Debug,     T6: Debug,     T7: Debug,     T8: Debug,     T9: Debug,

• impl Debug for std::sync::atomic::Ordering

• impl Debug for u32x16

• impl<Ret, A, B, C, D, E> Debug for unsafe fn(A, B, C, D, E) -> Ret

• impl Debug for u8x2

• impl<T> Debug for std::iter::Once<T> where     T: Debug,

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

• impl<Ret, A, B, C, D, E, F, G, H> Debug for unsafe fn(A, B, C, D, E, F, G, H) -> Ret

• impl<T> Debug for [T; 12] where     T: Debug,

• impl Debug for EscapeUnicode

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

• impl<Ret, A> Debug for extern "C" fn(A, ...) -> Ret

• impl<T10, T11> Debug for (T10, T11) where     T10: Debug,     T11: Debug + ?Sized,

• impl Debug for i32x8

• impl<Ret, A, B, C, D, E, F, G> Debug for fn(A, B, C, D, E, F, G) -> Ret

• impl<'a> Debug for std::str::Lines<'a>

• impl<T> Debug for [T; 19] where     T: Debug,

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

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

• impl<T> Debug for [T; 4] where     T: Debug,

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

• impl Debug for u8x8

• impl<Ret, A, B, C, D, E, F, G, H> Debug for extern "C" fn(A, B, C, D, E, F, G, H) -> Ret

• impl<T8, T9, T10, T11> Debug for (T8, T9, T10, T11) where     T10: Debug,     T11: Debug + ?Sized,     T8: Debug,     T9: Debug,

• impl Debug for TryFromIntError

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

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

• impl Debug for AtomicU8

• impl Debug for i32x4

• impl<Ret, A, B, C, D> Debug for fn(A, B, C, D) -> Ret

• impl Debug for i64x4

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

• impl Debug for i8x2

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

• impl<Ret, A, B, C, D> Debug for extern "C" fn(A, B, C, D) -> Ret

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

• impl<Ret, A, B, C, D, E, F, G> Debug for extern "C" fn(A, B, C, D, E, F, G, ...) -> Ret

• impl Debug for f32x8

• impl Debug for EscapeDebug

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

• impl<'a> Debug for std::str::Bytes<'a>

• impl Debug for std::cmp::Ordering

• impl Debug for u32

• impl<T> Debug for [T; 18] where     T: Debug,

• impl<Ret, A, B, C, D, E> Debug for extern "C" fn(A, B, C, D, E, ...) -> Ret

• impl<Ret, A, B, C, D, E, F, G, H, I> Debug for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, ...) -> Ret

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

• impl<Ret> Debug for extern "C" fn() -> Ret

• impl Debug for NonZeroI64

• impl<T4, T5, T6, T7, T8, T9, T10, T11> Debug for (T4, T5, T6, T7, T8, T9, T10, T11) where     T10: Debug,     T11: Debug + ?Sized,     T4: Debug,     T5: Debug,     T6: Debug,     T7: Debug,     T8: Debug,     T9: Debug,

• impl<Ret> Debug for unsafe extern "C" fn() -> Ret

• impl<Ret, A, B, C, D, E, F, G, H, I, J> Debug for extern "C" fn(A, B, C, D, E, F, G, H, I, J, ...) -> Ret

• impl<T> Debug for [T; 13] where     T: Debug,

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

• impl<T> Debug for [T; 32] where     T: Debug,

• impl<'a, T, P> Debug for std::slice::SplitN<'a, T, P> where     P: FnMut(&T) -> bool,     T: 'a + Debug,

• impl<Ret, A, B, C> Debug for extern "C" fn(A, B, C) -> Ret

• impl<T11> Debug for (T11,) where     T11: Debug + ?Sized,

• impl Debug for i8x64

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

• impl Debug for AtomicUsize

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

• impl Debug for ParseIntError

• impl Debug for NonZeroU16

• impl Debug for NonZeroU32

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

• impl Debug for AtomicIsize

• impl Debug for str

• impl<Ret, A, B, C, D, E, F, G, H, I, J> Debug for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J) -> Ret

• impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Debug for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret

• impl<T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> Debug for (T2, T3, T4, T5, T6, T7, T8, T9, T10, T11) where     T10: Debug,     T11: Debug + ?Sized,     T2: Debug,     T3: Debug,     T4: Debug,     T5: Debug,     T6: Debug,     T7: Debug,     T8: Debug,     T9: Debug,

• impl<Ret> Debug for fn() -> Ret

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

• impl<T> Debug for [T; 0] where     T: Debug,

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

• impl<I> Debug for DecodeUtf8<I> where     I: Iterator<Item = u8> + Debug,

• impl<T3, T4, T5, T6, T7, T8, T9, T10, T11> Debug for (T3, T4, T5, T6, T7, T8, T9, T10, T11) where     T10: Debug,     T11: Debug + ?Sized,     T3: Debug,     T4: Debug,     T5: Debug,     T6: Debug,     T7: Debug,     T8: Debug,     T9: Debug,

• impl Debug for i8

• impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Debug for fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret

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

• impl<Ret, A> Debug for unsafe fn(A) -> Ret

• impl<'a> Debug for CharSearcher<'a>

• impl<Ret, A> Debug for unsafe extern "C" fn(A, ...) -> Ret

• impl<Ret, A, B, C, D, E, F, G, H> Debug for unsafe extern "C" fn(A, B, C, D, E, F, G, H, ...) -> Ret

• impl Debug for AtomicI64

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

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

• impl Debug for u16x32

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

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

• impl<Ret, A, B, C, D, E, F, G, H, I> Debug for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I) -> Ret

• impl<T> Debug for [T; 24] where     T: Debug,

• impl<Ret, A, B, C, D, E, F> Debug for unsafe extern "C" fn(A, B, C, D, E, F) -> Ret

• impl<'a, T> Debug for std::slice::IterMut<'a, T> where     T: 'a + Debug,

• impl Debug for NonZeroI32

• impl Debug for NoneError

• impl Debug for i8x4

• impl<T> Debug for AtomicPtr<T>

• impl Debug for i32

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

• impl<T> Debug for [T; 7] where     T: Debug,

• impl Debug for b8x64

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

• impl Debug for std::fmt::Error

• impl<A, B> Debug for std::iter::Chain<A, B> where     A: Debug,     B: Debug,

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

• impl<'a, T> Debug for &'a T where     T: Debug + ?Sized,

• impl Debug for u8x32

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

• impl<I> Debug for std::iter::Take<I> where     I: Debug,

• impl Debug for NonZeroUsize

• impl Debug for i64

• impl Debug for CharTryFromError

• impl<T6, T7, T8, T9, T10, T11> Debug for (T6, T7, T8, T9, T10, T11) where     T10: Debug,     T11: Debug + ?Sized,     T6: Debug,     T7: Debug,     T8: Debug,     T9: Debug,

• impl<Ret, A, B, C, D, E, F, G, H, I> Debug for unsafe fn(A, B, C, D, E, F, G, H, I) -> Ret

• impl Debug for u8x16

• impl Debug for FpCategory

• impl Debug for ParseCharError

• impl<Ret, A, B, C, D, E, F, G, H> Debug for fn(A, B, C, D, E, F, G, H) -> Ret

• impl Debug for AtomicI16

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

• impl Debug for NonZeroI128

• impl<'a, T> Debug for Pin<'a, T> where     T: Debug + ?Sized,

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

• impl<T> Debug for Unique<T> where     T: ?Sized,

• impl<T> Debug for [T; 27] where     T: Debug,

• impl<Ret, A, B, C, D, E, F, G, H, I, J> Debug for extern "C" fn(A, B, C, D, E, F, G, H, I, J) -> Ret

• impl<T> Debug for Discriminant<T>

• impl<Ret, A> Debug for unsafe extern "C" fn(A) -> Ret

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

• impl<Ret, A, B, C> Debug for extern "C" fn(A, B, C, ...) -> Ret

• impl Debug for i16x32

• impl Debug for u32x8

• impl<Ret, A, B, C, D, E, F, G> Debug for unsafe extern "C" fn(A, B, C, D, E, F, G) -> Ret

• impl<T> Debug for std::iter::Empty<T>

• impl<T> Debug for [T; 26] where     T: Debug,

• impl<T> Debug for [T; 25] where     T: Debug,

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

• impl<H> Debug for BuildHasherDefault<H>

• impl Debug for NonZeroU64

• impl<'a, T, P> Debug for std::slice::RSplit<'a, T, P> where     P: FnMut(&T) -> bool,     T: 'a + Debug,

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

• impl Debug for i16x4

• impl Debug for u64x8

• impl<Ret, A, B, C, D, E, F, G, H, I, J> Debug for fn(A, B, C, D, E, F, G, H, I, J) -> Ret

• impl Debug for bool

• impl Debug for u64

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

• impl<T> Debug for [T; 11] where     T: Debug,

• impl Debug for b8x16

• impl<T> Debug for [T; 16] where     T: Debug,

• impl Debug for i8x16

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

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

• impl Debug for std::char::EscapeDefault

• impl<T> Debug for [T; 14] where     T: Debug,

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

• impl<Ret, A, B, C, D, E, F> Debug for unsafe fn(A, B, C, D, E, F) -> Ret

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

• impl<Ret> Debug for unsafe fn() -> Ret

• impl Debug for AtomicU64

• impl<Ret, A, B, C, D, E> Debug for extern "C" fn(A, B, C, D, E) -> Ret

• impl Debug for u8x4

• impl<Ret, A, B, C, D, E, F, G, H, I> Debug for extern "C" fn(A, B, C, D, E, F, G, H, I) -> Ret

• impl<T> Debug for [T; 31] where     T: Debug,

• impl Debug for usize

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

• impl Debug for NonZeroIsize

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

• impl<T> Debug for ManuallyDrop<T> where     T: Debug,

• impl Debug for Duration

• impl<Ret, A, B> Debug for unsafe extern "C" fn(A, B) -> Ret

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

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

• impl<T> Debug for [T; 28] where     T: Debug,

• impl<Ret, A, B, C, D> Debug for unsafe fn(A, B, C, D) -> Ret

• impl<Ret, A, B> Debug for unsafe extern "C" fn(A, B, ...) -> Ret

• impl<Ret, A, B, C> Debug for unsafe extern "C" fn(A, B, C) -> Ret

• impl Debug for Any + 'static + Send

• impl<T> Debug for [T; 6] where     T: Debug,

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

• impl Debug for u16x8

• impl<Ret, A, B, C, D, E> Debug for unsafe extern "C" fn(A, B, C, D, E, ...) -> Ret

• impl Debug for f64x8

• impl Debug for u64x4

• impl Debug for i16x2

• impl<Ret, A, B, C, D, E, F, G, H, I> Debug for fn(A, B, C, D, E, F, G, H, I) -> Ret

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

• impl<Ret, A, B, C, D, E, F> Debug for fn(A, B, C, D, E, F) -> Ret

• impl Debug for u8

• impl<T> Debug for [T; 23] where     T: Debug,

• impl<T> Debug for [T; 21] where     T: Debug,

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

• impl Debug for NonZeroU8

• impl Debug for b8x32

• impl<Ret, A, B, C, D, E, F, G, H> Debug for extern "C" fn(A, B, C, D, E, F, G, H, ...) -> Ret

• impl Debug for isize

• impl<Ret, A, B, C, D, E> Debug for fn(A, B, C, D, E) -> Ret

• impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Debug for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L, ...) -> Ret

• impl<T7, T8, T9, T10, T11> Debug for (T7, T8, T9, T10, T11) where     T10: Debug,     T11: Debug + ?Sized,     T7: Debug,     T8: Debug,     T9: Debug,

• impl Debug for AtomicI32

• impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Debug for fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret

• impl Debug for BorrowError

• impl Debug for Any + 'static

• impl<T> Debug for [T; 5] where     T: Debug,

• impl<Ret, A, B, C, D, E, F> Debug for extern "C" fn(A, B, C, D, E, F) -> Ret

• impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Debug for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, ...) -> Ret

• impl<Ret, A, B, C, D> Debug for unsafe extern "C" fn(A, B, C, D, ...) -> Ret

• impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Debug for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L, ...) -> Ret

• impl Debug for SipHasher

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

• impl Debug for b8x8

• impl Debug for NonZeroI8

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

• impl Debug for u32x2

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

• impl Debug for i64x8

• impl Debug for NonZeroI16

• impl Debug for f64x4

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

• impl Debug for !

• impl<Ret, A, B, C, D, E, F, G, H, I, J> Debug for unsafe fn(A, B, C, D, E, F, G, H, I, J) -> Ret

• impl<T> Debug for [T; 1] where     T: Debug,

• impl<T> Debug for [T; 15] where     T: Debug,

• impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Debug for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, ...) -> Ret

• impl Debug for i64x2

• impl Debug for u16x4

• impl<T> Debug for [T; 20] where     T: Debug,

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

• impl Debug for u128

• impl<T> Debug for [T; 3] where     T: Debug,

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

• impl Debug for TypeId

• impl<Ret, A, B, C, D> Debug for extern "C" fn(A, B, C, D, ...) -> Ret

• impl Debug for AtomicU16

• impl Debug for i32x16

• impl<T> Debug for std::result::IntoIter<T> where     T: Debug,

• impl<'a, T> Debug for std::slice::Iter<'a, T> where     T: 'a + Debug,

• impl Debug for u32x4

• impl Debug for i8x32

• impl<Ret, A> Debug for extern "C" fn(A) -> Ret

• impl<'a> Debug for PanicInfo<'a>

• impl<Idx> Debug for std::ops::Range<Idx> where     Idx: Debug,

• impl<Ret, A> Debug for fn(A) -> Ret

• impl Debug for i16x16

• impl<Ret, A, B, C, D, E, F, G, H> Debug for unsafe extern "C" fn(A, B, C, D, E, F, G, H) -> Ret

• impl<'a, T> Debug for &'a mut T where     T: Debug + ?Sized,

• impl<Ret, A, B, C> Debug for fn(A, B, C) -> Ret

• impl<T> Debug for [T; 2] where     T: Debug,

• impl<Ret, A, B> Debug for fn(A, B) -> Ret

• impl<Ret, A, B, C, D, E, F, G, H, I, J, K, L> Debug for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L) -> Ret

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

• impl<Ret, A, B, C, D, E, F> Debug for extern "C" fn(A, B, C, D, E, F, ...) -> Ret

• impl<T9, T10, T11> Debug for (T9, T10, T11) where     T10: Debug,     T11: Debug + ?Sized,     T9: Debug,

• impl<Ret, A, B, C, D, E, F, G, H, I, J> Debug for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, ...) -> Ret

• impl<Ret, A, B, C, D, E, F, G> Debug for unsafe fn(A, B, C, D, E, F, G) -> Ret

• impl Debug for ParseBoolError

• impl<F> Debug for RepeatWith<F> where     F: Debug,

• impl Debug for f32

• impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11> Debug for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11) where     T0: Debug,     T1: Debug,     T10: Debug,     T11: Debug + ?Sized,     T2: Debug,     T3: Debug,     T4: Debug,     T5: Debug,     T6: Debug,     T7: Debug,     T8: Debug,     T9: Debug,

• impl Debug for RangeFull

• impl<Ret, A, B, C, D, E, F, G, H, I> Debug for extern "C" fn(A, B, C, D, E, F, G, H, I, ...) -> Ret

• impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Debug for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret

• impl<Ret, A, B, C, D, E, F, G, H, I, J, K> Debug for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret

• impl Debug for f32x2

• impl Debug for NonZeroU128

• impl<A> Debug for std::iter::Repeat<A> where     A: Debug,

• impl Debug for Heap

• impl<'a, K, V> Debug for std::collections::btree_map::ValuesMut<'a, K, V> where     K: 'a + Debug,     V: 'a + Debug,

• impl<T> Debug for std::collections::binary_heap::IntoIter<T> where     T: Debug,

• impl<'a> Debug for EncodeUtf16<'a>

• impl<'a, T> Debug for std::vec::PlaceBack<'a, T> where     T: 'a + Debug,

• impl<'a, T, F> Debug for std::vec::DrainFilter<'a, T, F> where     F: Debug + FnMut(&mut T) -> bool,     T: 'a + Debug,

• impl<'a, T> Debug for std::collections::binary_heap::Iter<'a, T> where     T: 'a + Debug,

• impl<'a, K, V> Debug for std::collections::btree_map::Entry<'a, K, V> where     K: 'a + Ord + Debug,     V: 'a + Debug,

• impl<T> Debug for LinkedList<T> where     T: Debug,

• impl<'a, T> Debug for std::vec::Drain<'a, T> where     T: 'a + Debug,

• impl<'a, T> Debug for std::collections::btree_set::Intersection<'a, T> where     T: 'a + Debug,

• impl Debug for FromUtf16Error

• impl<'a, I> Debug for Splice<'a, I> where     I: 'a + Iterator + Debug,     <I as Iterator>::Item: Debug,

• impl<'a, T, F> Debug for std::collections::linked_list::DrainFilter<'a, T, F> where     F: FnMut(&mut T) -> bool,     T: 'a + Debug,

• impl<'a, T> Debug for std::collections::vec_deque::IterMut<'a, T> where     T: 'a + Debug,

• impl<T> Debug for Vec<T> where     T: Debug,

• impl<'a, K, V> Debug for std::collections::btree_map::Range<'a, K, V> where     K: 'a + Debug,     V: 'a + Debug,

• impl<T> Debug for std::collections::btree_set::IntoIter<T> where     T: Debug,

• impl<'a, T> Debug for std::collections::vec_deque::Drain<'a, T> where     T: 'a + Debug,

• impl<K, V> Debug for BTreeMap<K, V> where     K: Debug,     V: Debug,

• impl<'a, T> Debug for std::collections::btree_set::SymmetricDifference<'a, T> where     T: 'a + Debug,

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

• impl<T> Debug for std::collections::vec_deque::IntoIter<T> where     T: Debug,

• impl<T> Debug for BinaryHeap<T> where     T: Ord + Debug,

• impl<'a, T> Debug for std::collections::linked_list::IterMut<'a, T> where     T: 'a + Debug,

• impl<'a, K, V> Debug for std::collections::btree_map::Keys<'a, K, V> where     K: 'a + Debug,     V: 'a,

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

• impl<'a, T> Debug for std::collections::vec_deque::Iter<'a, T> where     T: 'a + Debug,

• impl<'a, T> Debug for std::collections::btree_set::Union<'a, T> where     T: 'a + Debug,

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

• impl<'a, T> Debug for std::collections::binary_heap::Drain<'a, T> where     T: 'a + Debug,

• impl Debug for ParseError

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

• impl<T> Debug for std::collections::linked_list::IntoIter<T> where     T: Debug,

• impl<T> Debug for std::vec::IntoIter<T> where     T: Debug,

• impl<K, V> Debug for std::collections::btree_map::IntoIter<K, V> where     K: Debug,     V: Debug,

• impl<T> Debug for std::sync::Weak<T> where     T: Debug + ?Sized,

• impl<'a, T> Debug for std::collections::btree_set::Range<'a, T> where     T: 'a + Debug,

• impl<'a, T> Debug for BinaryHeapPlace<'a, T> where     T: Ord + Clone + Debug,

• impl<T> Debug for std::rc::Weak<T> where     T: Debug + ?Sized,

• impl<'a, T> Debug for std::collections::vec_deque::PlaceBack<'a, T> where     T: 'a + Debug,

• impl<T> Debug for BTreeSet<T> where     T: Debug,

• impl<'a, K, V> Debug for std::collections::btree_map::OccupiedEntry<'a, K, V> where     K: 'a + Ord + Debug,     V: 'a + Debug,

• impl<'a, K, V> Debug for std::collections::btree_map::Iter<'a, K, V> where     K: 'a + Debug,     V: 'a + Debug,

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

• impl<'a, K, V> Debug for std::collections::btree_map::Values<'a, K, V> where     K: 'a,     V: 'a + Debug,

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

• impl<'a, K, V> Debug for RangeMut<'a, K, V> where     K: 'a + Debug,     V: 'a + Debug,

• impl Debug for String

• impl<'a, T> Debug for PeekMut<'a, T> where     T: Ord + Debug,

• impl<'a, T> Debug for std::collections::btree_set::Iter<'a, T> where     T: 'a + Debug,

• impl<'a> Debug for std::string::Drain<'a>

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

• impl<'a, K, V> Debug for std::collections::btree_map::IterMut<'a, K, V> where     K: 'a + Debug,     V: 'a + Debug,

• impl<'a, T> Debug for std::collections::linked_list::Iter<'a, T> where     T: 'a + Debug,

• impl Debug for FromUtf8Error

• impl<'a, T> Debug for std::collections::btree_set::Difference<'a, T> where     T: 'a + Debug,

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

• impl<'a, K, V> Debug for std::collections::btree_map::VacantEntry<'a, K, V> where     K: 'a + Ord + Debug,     V: 'a,

• impl<T> Debug for VecDeque<T> where     T: Debug,

• impl Debug for ToUppercase

• impl Debug for DecodeUtf16Error

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

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

• impl Debug for UnicodeVersion

• impl Debug for ToLowercase

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

• impl Debug for AccessError

• impl Debug for Builder

• impl Debug for ThreadId

• impl Debug for Thread

• impl<T> Debug for JoinHandle<T>

• impl<K, V, S> Debug for HashMap<K, V, S> where     K: Eq + Hash + Debug,     V: Debug,     S: BuildHasher,

• impl<'a, K: Debug, V: Debug> Debug for std::collections::hash_map::Iter<'a, K, V>

• impl<'a, K: Debug, V> Debug for std::collections::hash_map::Keys<'a, K, V>

• impl<'a, K, V: Debug> Debug for std::collections::hash_map::Values<'a, K, V>

• impl<'a, K: 'a + Debug, V: 'a + Debug> Debug for std::collections::hash_map::Entry<'a, K, V>

• impl<'a, K: 'a + Debug, V: 'a + Debug> Debug for std::collections::hash_map::OccupiedEntry<'a, K, V>

• impl<'a, K: 'a + Debug, V: 'a> Debug for std::collections::hash_map::VacantEntry<'a, K, V>

• impl<'a, K, V> Debug for std::collections::hash_map::IterMut<'a, K, V> where     K: Debug,     V: Debug,

• impl<K: Debug, V: Debug> Debug for std::collections::hash_map::IntoIter<K, V>

• impl<'a, K, V> Debug for std::collections::hash_map::ValuesMut<'a, K, V> where     K: Debug,     V: Debug,

• impl<'a, K, V> Debug for std::collections::hash_map::Drain<'a, K, V> where     K: Debug,     V: Debug,

• impl<'a, K: 'a + Debug, V: 'a + Debug> Debug for EntryPlace<'a, K, V>

• impl Debug for DefaultHasher

• impl Debug for RandomState

• impl<T, S> Debug for HashSet<T, S> where     T: Eq + Hash + Debug,     S: BuildHasher,

• impl<'a, K: Debug> Debug for std::collections::hash_set::Iter<'a, K>

• impl<K: Debug> Debug for std::collections::hash_set::IntoIter<K>

• impl<'a, K: Debug> Debug for std::collections::hash_set::Drain<'a, K>

• impl<'a, T, S> Debug for std::collections::hash_set::Intersection<'a, T, S> where     T: Debug + Eq + Hash,     S: BuildHasher,

• impl<'a, T, S> Debug for std::collections::hash_set::Difference<'a, T, S> where     T: Debug + Eq + Hash,     S: BuildHasher,

• impl<'a, T, S> Debug for std::collections::hash_set::SymmetricDifference<'a, T, S> where     T: Debug + Eq + Hash,     S: BuildHasher,

• impl<'a, T, S> Debug for std::collections::hash_set::Union<'a, T, S> where     T: Debug + Eq + Hash,     S: BuildHasher,

• impl Debug for Vars

• impl Debug for VarsOs

• impl Debug for VarError

• impl<'a> Debug for SplitPaths<'a>

• impl Debug for JoinPathsError

• impl Debug for Args

• impl Debug for ArgsOs

• impl Debug for NulError

• impl Debug for FromBytesWithNulError

• impl Debug for IntoStringError

• impl Debug for CString

• impl Debug for CStr

• impl Debug for OsString

• impl Debug for OsStr

• impl Debug for ReadDir

• impl Debug for OpenOptions

• impl Debug for Permissions

• impl Debug for FileType

• impl Debug for DirBuilder

• impl Debug for File

• impl Debug for Metadata

• impl Debug for DirEntry

• impl<R> Debug for BufReader<R> where     R: Debug,

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

• impl<W: Write> Debug for BufWriter<W> where     W: Debug,

• impl<W: Write> Debug for LineWriter<W> where     W: Debug,

• impl<T: Debug> Debug for Cursor<T>

• impl Debug for std::io::Error

• impl Debug for ErrorKind

• impl Debug for std::io::Empty

• impl Debug for std::io::Repeat

• impl Debug for Sink

• impl Debug for Stdin

• impl<'a> Debug for StdinLock<'a>

• impl Debug for Stdout

• impl<'a> Debug for StdoutLock<'a>

• impl Debug for Stderr

• impl<'a> Debug for StderrLock<'a>

• impl Debug for Initializer

• impl Debug for SeekFrom

• impl<T: Debug, U: Debug> Debug for std::io::Chain<T, U>

• impl<T: Debug> Debug for std::io::Take<T>

• impl<R: Debug> Debug for std::io::Bytes<R>

• impl<R: Debug> Debug for std::io::Chars<R>

• impl Debug for CharsError

• impl<B: Debug> Debug for std::io::Split<B>

• impl<B: Debug> Debug for std::io::Lines<B>

• impl Debug for IpAddr

• impl Debug for Ipv6MulticastScope

• impl Debug for Ipv4Addr

• impl Debug for Ipv6Addr

• impl Debug for std::net::SocketAddr

• impl Debug for SocketAddrV4

• impl Debug for SocketAddrV6

• impl<'a> Debug for std::net::Incoming<'a>

• impl Debug for TcpStream

• impl Debug for TcpListener

• impl Debug for UdpSocket

• impl Debug for AddrParseError

• impl Debug for Shutdown

• impl Debug for LookupHost

• impl Debug for c_void

• impl<T: Debug> Debug for AssertUnwindSafe<T>

• impl<'a> Debug for Prefix<'a>

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

• impl<'a> Debug for Component<'a>

• impl<'a> Debug for Components<'a>

• impl<'a> Debug for std::path::Iter<'a>

• impl<'a> Debug for Ancestors<'a>

• impl Debug for PathBuf

• impl Debug for StripPrefixError

• impl Debug for Path

• impl<'a> Debug for Display<'a>

• impl Debug for Child

• impl Debug for ChildStdin

• impl Debug for ChildStdout

• impl Debug for ChildStderr

• impl Debug for Command

• impl Debug for Output

• impl Debug for Stdio

• impl Debug for ExitStatus

• impl Debug for ExitCode

• impl Debug for Select

• impl<'rx, T: Send + 'rx> Debug for Handle<'rx, T>

• impl<'a, T: Debug + 'a> Debug for std::sync::mpsc::Iter<'a, T>

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

• impl<T: Debug> Debug for std::sync::mpsc::IntoIter<T>

• impl Debug for RecvError

• impl Debug for TryRecvError

• impl Debug for RecvTimeoutError

• impl<T> Debug for Sender<T>

• impl<T> Debug for SyncSender<T>

• impl<T> Debug for Receiver<T>

• impl<T> Debug for SendError<T>

• impl<T> Debug for TrySendError<T>

• impl Debug for Barrier

• impl Debug for BarrierWaitResult

• impl Debug for WaitTimeoutResult

• impl Debug for Condvar

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

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

• impl Debug for OnceState

• impl Debug for std::sync::Once

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

• impl<'a, T: Debug> Debug for RwLockReadGuard<'a, T>

• impl<'a, T: Debug> Debug for RwLockWriteGuard<'a, T>

• impl Debug for SystemTimeError

• impl Debug for Instant

• impl Debug for SystemTime

• impl<T> Debug for PoisonError<T>

• impl<T> Debug for TryLockError<T>

• impl Debug for std::os::unix::net::SocketAddr

• impl Debug for UnixStream

• impl Debug for UnixListener

• impl<'a> Debug for std::os::unix::net::Incoming<'a>

• impl Debug for UnixDatagram