Trait alloc::fmt::Debug

[+] Expand attributes
#[lang = "debug_trait"]
pub trait Debug {
    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 ).

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

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

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

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

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

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

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

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

impl Debug for InvalidSequence

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

impl Debug for CharTryFromError

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

impl Debug for AtomicU16

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

impl Debug for Any + 'static + Send

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

impl Debug for AtomicBool

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

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

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

impl Debug for FpCategory

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

impl Debug for AtomicUsize

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

impl Debug for TypeId

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

impl Debug for EscapeDebug

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

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

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

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

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

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

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

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

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

impl Debug for AtomicIsize

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

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

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

impl Debug for AtomicU8

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

impl Debug for TryFromIntError

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

impl Debug for BorrowError

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

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

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

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

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

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

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

impl Debug for AtomicI16

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

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

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

impl Debug for AtomicI8

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

impl Debug for Ordering

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

impl Debug for SipHasher

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

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

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

impl Debug for AtomicU32

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

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

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

impl Debug for AtomicU64

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

impl<T> Debug for Empty<T>

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

impl Debug for SipHasher13

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

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

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

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

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

impl Debug for Ordering

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

impl Debug for Alignment

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

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

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

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

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

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

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

impl Debug for TryFromSliceError

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

impl Debug for RangeFull

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

impl Debug for Infallible

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

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

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

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

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

impl Debug for EscapeDefault

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

impl Debug for AtomicI32

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

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

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

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

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

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

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

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

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

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

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

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

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

impl Debug for ParseCharError

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

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

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

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

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

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

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

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

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

impl Debug for NoneError

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

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

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

impl Debug for AtomicI64

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

impl Debug for BorrowMutError

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

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

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

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

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

impl Debug for ParseIntError

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

impl Debug for Any + 'static

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

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

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

impl<H> Debug for BuildHasherDefault<H>

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

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

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

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

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

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

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

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

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

impl Debug for Duration

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

impl Debug for ParseFloatError

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

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

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

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

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

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

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

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

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

impl Debug for SipHasher24

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

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

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

impl<T> Debug for Discriminant<T>

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

impl Debug for EscapeUnicode

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

impl<T> Debug for AtomicPtr<T>

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

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

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

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

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

impl Debug for Utf8Lossy

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

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

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

impl Debug for DecodeUtf16Error

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

impl Debug for ToLowercase

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

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

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

impl Debug for ToUppercase

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

impl Debug for UnicodeVersion

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

Implementors

• impl Debug for Excess
• impl Debug for Layout
• impl Debug for AllocErr
• impl Debug for CannotReallocInPlace
• impl Debug for Heap
• impl<T: Debug + ?Sized> Debug for Box<T>
• impl<T: ?Sized + Debug> Debug for alloc::arc::Weak<T>
• impl<T: ?Sized + Debug> Debug for Arc<T>
• impl<T: ?Sized + Debug> Debug for Rc<T>
• impl<T: ?Sized + Debug> Debug for alloc::rc::Weak<T>
• impl<'a, T: Ord + Debug> Debug for PeekMut<'a, T>
• impl<T: Debug + Ord> Debug for BinaryHeap<T>
• impl<'a, T: 'a + Debug> Debug for alloc::binary_heap::Iter<'a, T>
• impl<T: Debug> Debug for alloc::binary_heap::IntoIter<T>
• impl<'a, T: Debug + 'a> Debug for alloc::binary_heap::Drain<'a, T>
• impl<'a, T: Clone + Ord + Debug> Debug for BinaryHeapPlace<'a, T>
• impl<'a, K: 'a + Debug, V: 'a + Debug> Debug for alloc::btree_map::Iter<'a, K, V>
• impl<'a, K: Debug + 'a, V: Debug + 'a> Debug for alloc::btree_map::IterMut<'a, K, V>
• impl<K: Debug, V: Debug> Debug for alloc::btree_map::IntoIter<K, V>
• impl<'a, K: 'a + Debug, V: 'a> Debug for Keys<'a, K, V>
• impl<'a, K: 'a, V: 'a + Debug> Debug for Values<'a, K, V>
• impl<'a, K: Debug + 'a, V: Debug + 'a> Debug for ValuesMut<'a, K, V>
• impl<'a, K: 'a + Debug, V: 'a + Debug> Debug for alloc::btree_map::Range<'a, K, V>
• impl<'a, K: 'a + Debug, V: 'a + Debug> Debug for RangeMut<'a, K, V>
• impl<'a, K: 'a + Debug + Ord, V: 'a + Debug> Debug for Entry<'a, K, V>
• impl<'a, K: 'a + Debug + Ord, V: 'a> Debug for VacantEntry<'a, K, V>
• impl<'a, K: 'a + Debug + Ord, V: 'a + Debug> Debug for OccupiedEntry<'a, K, V>
• impl<K: Debug, V: Debug> Debug for BTreeMap<K, V>
• impl<'a, T: 'a + Debug> Debug for alloc::btree_set::Iter<'a, T>
• impl<T: Debug> Debug for alloc::btree_set::IntoIter<T>
• impl<'a, T: Debug + 'a> Debug for alloc::btree_set::Range<'a, T>
• impl<'a, T: 'a + Debug> Debug for Difference<'a, T>
• impl<'a, T: 'a + Debug> Debug for SymmetricDifference<'a, T>
• impl<'a, T: 'a + Debug> Debug for Intersection<'a, T>
• impl<'a, T: 'a + Debug> Debug for Union<'a, T>
• impl<T: Debug> Debug for BTreeSet<T>
• impl<'a, F> Debug for CharPredicateSearcher<'a, F> where
    F: FnMut(char) -> bool, 
• impl Debug for u8
• impl Debug for i64
• impl<Ret, A, B, C> Debug for unsafe fn(A, B, C) -> Ret
• impl Debug for i32
• impl<Ret, A, B, C, D, E> Debug for unsafe extern "C" fn(A, B, C, D, E, ...) -> Ret
• impl<'a, T, P> Debug for alloc::slice::SplitN<'a, T, P> where
    P: FnMut(&T) -> bool,
    T: 'a + 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<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> Debug for extern "C" fn(A, ...) -> Ret
• impl<T> Debug for [T; 6] 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, 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, L> Debug for unsafe extern "C" fn(A, B, C, D, E, F, G, H, I, J, K, L, ...) -> Ret
• impl<T> Debug for [T; 16] where
    T: Debug, 
• 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<Ret> Debug for unsafe extern "C" fn() -> Ret
• 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<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<Ret, A, B> Debug for unsafe extern "C" fn(A, B, ...) -> Ret
• impl<'a, P> Debug for RSplitTerminator<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug, 
• impl<T> Debug for [T; 3] where
    T: Debug, 
• impl<'a, T, P> Debug for alloc::slice::Split<'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<T> Debug for [T; 1] where
    T: Debug, 
• impl<'a, P> Debug for Matches<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug, 
• impl<T> Debug for [T; 5] where
    T: Debug, 
• impl Debug for i8
• impl<'a> Debug for Bytes<'a>
• impl<Ret, A, B, C, D, E, F, G> Debug for unsafe extern "C" fn(A, B, C, D, E, F, G, ...) -> Ret
• impl<'a> Debug for Chars<'a>
• impl<T> Debug for [T; 20] where
    T: Debug, 
• impl<T> Debug for [T; 32] where
    T: Debug, 
• impl<T> Debug for [T; 23] where
    T: Debug, 
• 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<Ret, A, B, C, D, E> Debug for unsafe fn(A, B, C, D, E) -> Ret
• 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> Debug for extern "C" fn(A, B, C, D, E, F, G, H, I, ...) -> Ret
• impl Debug for ParseBoolError
• impl<Ret, A, B, C, D> Debug for unsafe fn(A, B, C, D) -> Ret
• impl<T> Debug for [T; 14] where
    T: Debug, 
• impl<'a> Debug for CharIndices<'a>
• 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<Ret, A, B> Debug for unsafe extern "C" fn(A, B) -> 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 Debug for ()
• 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<Ret, A, B, C, D, E, F> Debug for unsafe extern "C" fn(A, B, C, D, E, F) -> 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, T, P> Debug for alloc::slice::RSplitN<'a, T, P> where
    P: FnMut(&T) -> bool,
    T: 'a + Debug, 
• impl<'a> Debug for Arguments<'a>
• 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 bool
• impl<'a, T, P> Debug for RSplitNMut<'a, T, P> where
    P: FnMut(&T) -> bool,
    T: 'a + Debug, 
• impl<'a, T> Debug for ChunksMut<'a, T> where
    T: 'a + Debug, 
• impl<T> Debug for [T; 27] where
    T: Debug, 
• impl<'a, T> Debug for &'a mut T where
    T: Debug + ?Sized, 
• 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> Debug for extern "C" fn(A, B, C, D) -> Ret
• impl<T> Debug for [T; 24] where
    T: Debug, 
• impl<Ret, A, B, C> Debug for extern "C" fn(A, B, C, ...) -> Ret
• impl<Ret, A, B, C, D, E, F> Debug for unsafe extern "C" fn(A, B, C, D, E, F, ...) -> Ret
• 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<T> Debug for [T; 31] where
    T: Debug, 
• impl Debug for isize
• impl Debug for str
• impl<'a, T, P> Debug for SplitNMut<'a, T, P> where
    P: FnMut(&T) -> bool,
    T: 'a + Debug, 
• impl<T> Debug for [T; 7] where
    T: 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 u128
• impl<Ret, A> Debug for unsafe extern "C" fn(A, ...) -> Ret
• impl<T> Debug for [T; 4] where
    T: Debug, 
• impl<T> Debug for [T; 21] where
    T: Debug, 
• impl<T> Debug for [T; 9] where
    T: Debug, 
• impl<Ret, A, B> Debug for extern "C" fn(A, B, ...) -> Ret
• impl Debug for char
• impl Debug for u16
• 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<T> Debug for [T; 10] where
    T: Debug, 
• impl<Ret, A, B, C> Debug for unsafe extern "C" fn(A, B, C) -> Ret
• impl<Ret, A> Debug for unsafe fn(A) -> Ret
• impl<T> Debug for [T; 8] where
    T: Debug, 
• impl<T> Debug for [T; 19] where
    T: Debug, 
• impl Debug for Utf8Error
• impl<Ret> Debug for fn() -> 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 Debug for i128
• impl<Ret, A, B, C, D, E> Debug for extern "C" fn(A, B, C, D, E, ...) -> 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<T> Debug for [T] where
    T: Debug, 
• impl<'a> Debug for Lines<'a>
• impl<Ret, A, B, C, D, E, F> Debug for fn(A, B, C, D, E, F) -> Ret
• impl Debug for Error
• impl<'a, T, P> Debug for SplitMut<'a, T, P> where
    P: FnMut(&T) -> bool,
    T: 'a + Debug, 
• impl<'a, T, P> Debug for alloc::slice::RSplit<'a, T, P> where
    P: FnMut(&T) -> bool,
    T: 'a + Debug, 
• impl<T> Debug for [T; 30] where
    T: Debug, 
• impl<'a, 'b> Debug for StrSearcher<'a, 'b>
• 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<Ret, A, B, C, D, E, F, G, H> Debug for fn(A, B, C, D, E, F, G, H) -> Ret
• 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<T11> Debug for (T11,) where
    T11: Debug + ?Sized, 
• impl<T> Debug for [T; 12] where
    T: Debug, 
• impl<Ret, A, B> Debug for extern "C" fn(A, B) -> 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<'a, T> Debug for alloc::slice::IterMut<'a, T> where
    T: 'a + Debug, 
• impl<'a, T> Debug for ExactChunksMut<'a, T> where
    T: 'a + Debug, 
• impl<'a, P> Debug for alloc::str::RSplit<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug, 
• impl<'a, T> Debug for Windows<'a, T> where
    T: 'a + Debug, 
• impl Debug for usize
• impl<'a> Debug for LinesAny<'a>
• impl<Ret> Debug for unsafe fn() -> Ret
• impl<T> Debug for [T; 11] where
    T: Debug, 
• impl<Ret, A, B> Debug for fn(A, B) -> Ret
• impl<'a, P> Debug for MatchIndices<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug, 
• impl<Ret, A> Debug for unsafe extern "C" fn(A) -> Ret
• impl<'a, T> Debug for alloc::slice::Iter<'a, T> where
    T: 'a + Debug, 
• impl<T> Debug for [T; 15] where
    T: Debug, 
• impl<Ret, A, B> Debug for unsafe fn(A, B) -> 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 u32
• impl<Ret, A> Debug for extern "C" fn(A) -> Ret
• impl Debug for i16
• impl<T> Debug for [T; 22] where
    T: Debug, 
• impl<Ret, A, B, C, D> Debug for fn(A, B, C, D) -> Ret
• 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<'a, P> Debug for alloc::str::SplitN<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug, 
• impl<Ret, A, B, C> Debug for fn(A, B, C) -> Ret
• impl<T10, T11> Debug for (T10, T11) where
    T10: Debug,
    T11: Debug + ?Sized, 
• impl<Ret, A, B, C> Debug for unsafe extern "C" fn(A, B, C, ...) -> Ret
• impl<T> Debug for [T; 13] where
    T: Debug, 
• 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<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; 2] where
    T: Debug, 
• 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> Debug for extern "C" fn(A, B, C, D, E, F, G, H, I, J, K) -> Ret
• impl<T> Debug for [T; 17] where
    T: Debug, 
• impl<'a, P> Debug for RMatches<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug, 
• impl<Ret, A, B, C, D> Debug for extern "C" fn(A, B, C, D, ...) -> Ret
• impl<'a, P> Debug for SplitTerminator<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug, 
• impl<'a, 'b> Debug for CharSliceSearcher<'a, 'b>
• impl<T> Debug for [T; 25] where
    T: Debug, 
• impl<'a, T> Debug for Chunks<'a, T> where
    T: 'a + Debug, 
• impl<T> Debug for [T; 26] where
    T: Debug, 
• 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<T8, T9, T10, T11> Debug for (T8, T9, T10, T11) where
    T10: Debug,
    T11: Debug + ?Sized,
    T8: Debug,
    T9: Debug, 
• 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> Debug for unsafe fn(A, B, C, D, E, F, G) -> 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<Ret, A, B, C, D, E, F, G> Debug for extern "C" fn(A, B, C, D, E, F, G) -> Ret
• impl<Ret, A, B, C, D, E, F> Debug for unsafe fn(A, B, C, D, E, F) -> Ret
• impl<Ret, A, B, C, D, E, F, G> Debug for extern "C" fn(A, B, C, D, E, F, G, ...) -> Ret
• 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<'a, P> Debug for RMatchIndices<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug, 
• impl Debug for SearchStep
• impl<Ret, A, B, C, D, E, F> Debug for extern "C" fn(A, B, C, D, E, F, ...) -> Ret
• impl<'a, T> Debug for ExactChunks<'a, T> where
    T: 'a + Debug, 
• 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<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; 29] where
    T: Debug, 
• impl<T> Debug for [T; 0] where
    T: Debug, 
• impl<Ret, A, B, C, D, E, F, G> Debug for unsafe extern "C" fn(A, B, C, D, E, F, G) -> Ret
• impl<'a, T, P> Debug for RSplitMut<'a, T, P> where
    P: FnMut(&T) -> bool,
    T: 'a + Debug, 
• impl Debug for u64
• impl<Ret> Debug for extern "C" fn() -> Ret
• impl<'a, P> Debug for alloc::str::RSplitN<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: 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 !
• 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<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<'a, T> Debug for &'a T where
    T: Debug + ?Sized, 
• impl Debug for f32
• impl<'a, P> Debug for alloc::str::Split<'a, P> where
    P: Pattern<'a>,
    <P as Pattern<'a>>::Searcher: Debug, 
• impl<Ret, A> Debug for fn(A) -> Ret
• impl<T> Debug for *const T where
    T: ?Sized, 
• impl<Ret, A, B, C, D, E, F, G> Debug for fn(A, B, C, D, E, F, G) -> Ret
• impl<'a> Debug for CharSearcher<'a>
• impl<T> Debug for [T; 28] where
    T: Debug, 
• impl Debug for f64
• 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<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<T> Debug for *mut T where
    T: ?Sized, 
• impl<T9, T10, T11> Debug for (T9, T10, T11) where
    T10: Debug,
    T11: Debug + ?Sized,
    T9: Debug, 
• 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<'a> Debug for SplitWhitespace<'a>
• impl<'a, B: ?Sized> Debug for Cow<'a, B> where
    B: Debug + ToOwned,
    <B as ToOwned>::Owned: Debug, 
• impl<'a, T: 'a + Debug> Debug for alloc::linked_list::Iter<'a, T>
• impl<'a, T: 'a + Debug> Debug for alloc::linked_list::IterMut<'a, T>
• impl<T: Debug> Debug for alloc::linked_list::IntoIter<T>
• impl<'a, T: 'a + Debug, F> Debug for alloc::linked_list::DrainFilter<'a, T, F> where
    F: FnMut(&mut T) -> bool, 
• impl<T: Debug> Debug for LinkedList<T>
• impl<'a, T: 'a + Debug> Debug for FrontPlace<'a, T>
• impl<'a, T: 'a + Debug> Debug for BackPlace<'a, T>
• impl<'a> Debug for EncodeUtf16<'a>
• impl Debug for FromUtf8Error
• impl Debug for FromUtf16Error
• impl Debug for String
• impl Debug for ParseError
• impl<'a> Debug for alloc::string::Drain<'a>
• impl<T: Debug> Debug for Vec<T>
• impl<T: Debug> Debug for alloc::vec::IntoIter<T>
• impl<'a, T: 'a + Debug> Debug for alloc::vec::Drain<'a, T>
• impl<'a, T: Debug + 'a> Debug for alloc::vec::PlaceBack<'a, T>
• impl<'a, I: Debug + Iterator + 'a> Debug for Splice<'a, I> where
    I::Item: Debug, 
• impl<'a, T: Debug + 'a, F: Debug> Debug for alloc::vec::DrainFilter<'a, T, F> where
    F: FnMut(&mut T) -> bool, 
• impl<'a, T: 'a + Debug> Debug for alloc::vec_deque::Iter<'a, T>
• impl<'a, T: 'a + Debug> Debug for alloc::vec_deque::IterMut<'a, T>
• impl<T: Debug> Debug for alloc::vec_deque::IntoIter<T>
• impl<'a, T: 'a + Debug> Debug for alloc::vec_deque::Drain<'a, T>
• impl<T: Debug> Debug for VecDeque<T>
• impl<'a, T: Debug + 'a> Debug for alloc::vec_deque::PlaceBack<'a, T>
• impl<'a, T: Debug + 'a> Debug for PlaceFront<'a, T>
• impl<T: Debug> Debug for Bound<T>
• impl Debug for Level
• impl Debug for Diagnostic
• impl Debug for TokenStream
• impl Debug for LexError
• impl Debug for Span
• impl Debug for LineColumn
• impl Debug for SourceFile
• impl Debug for TokenTree
• impl Debug for TokenNode
• impl Debug for Delimiter
• impl Debug for Term
• impl Debug for Spacing
• impl Debug for Literal
• impl<'a> Debug for SplitWhitespace<'a>
• impl Debug for UnicodeVersion
• impl Debug for ToLowercase
• impl Debug for ToUppercase
• impl<I: Debug> Debug for DecodeUtf16<I> where
    I: Iterator<Item = u16>, 
• impl Debug for DecodeUtf16Error
• impl<'a> Debug for Utf8LossyChunk<'a>
• impl Debug for Utf8Lossy