Trait otter_api_tests::imports::failure::_core::default::Default

pub trait Default {
    pub fn default() -> Self;
}

A trait for giving a type a useful default value.

Sometimes, you want to fall back to some kind of default value, and don’t particularly care what it is. This comes up often with structs that define a set of options:

struct SomeOptions {
    foo: i32,
    bar: f32,
}

How can we define some default values? You can use Default:

#[derive(Default)]
struct SomeOptions {
    foo: i32,
    bar: f32,
}

fn main() {
    let options: SomeOptions = Default::default();
}

Now, you get all of the default values. Rust implements Default for various primitives types.

If you want to override a particular option, but still retain the other defaults:

fn main() {
    let options = SomeOptions { foo: 42, ..Default::default() };
}

Derivable

This trait can be used with #[derive] if all of the type’s fields implement Default. When derived, it will use the default value for each field’s type.

How can I implement Default?

Provide an implementation for the default() method that returns the value of your type that should be the default:

enum Kind {
    A,
    B,
    C,
}

impl Default for Kind {
    fn default() -> Self { Kind::A }
}

Examples

#[derive(Default)]
struct SomeOptions {
    foo: i32,
    bar: f32,
}

Required methods

pub fn default() -> Self

Returns the “default value” for a type.

Default values are often some kind of initial value, identity value, or anything else that may make sense as a default.

Examples

Using built-in default values:

let i: i8 = Default::default();
let (x, y): (Option<String>, f64) = Default::default();
let (a, b, (c, d)): (i32, u32, (bool, bool)) = Default::default();

Making your own:

enum Kind {
    A,
    B,
    C,
}

impl Default for Kind {
    fn default() -> Self { Kind::A }
}

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Implementations on Foreign Types

impl Default for OsString

pub fn default() -> OsString

Constructs an empty OsString.

impl<T> Default for SyncLazy<T, fn() -> T> where
    T: Default, 

pub fn default() -> SyncLazy<T, fn() -> T>

Creates a new lazy value using Default as the initializing function.

impl Default for CString

pub fn default() -> CString

Creates an empty CString.

impl<T> Default for Mutex<T> where
    T: Default + ?Sized, 

pub fn default() -> Mutex<T>

Creates a Mutex<T>, with the Default value for T.

impl<T> Default for SyncOnceCell<T>

pub fn default() -> SyncOnceCell<T>

impl<T> Default for RwLock<T> where
    T: Default, 

pub fn default() -> RwLock<T>

Creates a new RwLock<T>, with the Default value for T.

impl Default for Box<CStr, Global>

pub fn default() -> Box<CStr, Global>

impl Default for Box<OsStr, Global>

pub fn default() -> Box<OsStr, Global>

impl<'_> Default for &'_ CStr

pub fn default() -> &'_ CStr

impl Default for System

pub fn default() -> System

impl Default for Condvar

pub fn default() -> Condvar

Creates a Condvar which is ready to be waited on and notified.

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

pub fn default() -> [T; 9]

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

pub fn default() -> [T; 19]

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

pub fn default() -> [T; 2]

impl Default for f64

pub fn default() -> f64

Returns the default value of 0.0

impl<A, B, C, D, E, F, G, H, I, J> Default for (A, B, C, D, E, F, G, H, I, J) where
    C: Default,
    B: Default,
    E: Default,
    A: Default,
    I: Default,
    F: Default,
    G: Default,
    D: Default,
    H: Default,
    J: Default, 

pub fn default() -> (A, B, C, D, E, F, G, H, I, J)

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

pub fn default() -> [T; 24]

impl<'_> Default for &'_ mut str

pub fn default() -> &'_ mut str

Creates an empty mutable str

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

pub fn default() -> [T; 7]

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

pub fn default() -> [T; 15]

impl Default for f32

pub fn default() -> f32

Returns the default value of 0.0

impl Default for i32

pub fn default() -> i32

Returns the default value of 0

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

pub fn default() -> [T; 8]

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

pub fn default() -> [T; 28]

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

pub fn default() -> [T; 29]

impl Default for isize

pub fn default() -> isize

Returns the default value of 0

impl<A, B, C> Default for (A, B, C) where
    C: Default,
    B: Default,
    A: Default, 

pub fn default() -> (A, B, C)

impl Default for char

pub fn default() -> char

Returns the default value of \x00

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

pub fn default() -> [T; 31]

impl<'_, T> Default for &'_ mut [T]

pub fn default() -> &'_ mut [T]

Creates a mutable empty slice.

impl<A, B, C, D, E, F, G> Default for (A, B, C, D, E, F, G) where
    C: Default,
    B: Default,
    E: Default,
    A: Default,
    F: Default,
    G: Default,
    D: Default, 

pub fn default() -> (A, B, C, D, E, F, G)

impl Default for u16

pub fn default() -> u16

Returns the default value of 0

impl Default for usize

pub fn default() -> usize

Returns the default value of 0

impl Default for u8

pub fn default() -> u8

Returns the default value of 0

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

pub fn default() -> [T; 4]

impl<A, B, C, D, E, F, G, H> Default for (A, B, C, D, E, F, G, H) where
    C: Default,
    B: Default,
    E: Default,
    A: Default,
    F: Default,
    G: Default,
    D: Default,
    H: Default, 

pub fn default() -> (A, B, C, D, E, F, G, H)

impl<A, B, C, D, E> Default for (A, B, C, D, E) where
    C: Default,
    B: Default,
    E: Default,
    A: Default,
    D: Default, 

pub fn default() -> (A, B, C, D, E)

impl Default for u32

pub fn default() -> u32

Returns the default value of 0

impl<A, B, C, D, E, F, G, H, I> Default for (A, B, C, D, E, F, G, H, I) where
    C: Default,
    B: Default,
    E: Default,
    A: Default,
    I: Default,
    F: Default,
    G: Default,
    D: Default,
    H: Default, 

pub fn default() -> (A, B, C, D, E, F, G, H, I)

impl Default for bool

pub fn default() -> bool

Returns the default value of false

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

pub fn default() -> [T; 23]

impl<A, B, C, D, E, F, G, H, I, J, K, L> Default for (A, B, C, D, E, F, G, H, I, J, K, L) where
    C: Default,
    L: Default,
    B: Default,
    E: Default,
    A: Default,
    K: Default,
    I: Default,
    F: Default,
    G: Default,
    D: Default,
    H: Default,
    J: Default, 

pub fn default() -> (A, B, C, D, E, F, G, H, I, J, K, L)

impl Default for u64

pub fn default() -> u64

Returns the default value of 0

impl<A, B, C, D> Default for (A, B, C, D) where
    C: Default,
    B: Default,
    A: Default,
    D: Default, 

pub fn default() -> (A, B, C, D)

impl<A, B> Default for (A, B) where
    B: Default,
    A: Default, 

pub fn default() -> (A, B)

impl Default for u128

pub fn default() -> u128

Returns the default value of 0

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

pub fn default() -> [T; 16]

impl Default for i8

pub fn default() -> i8

Returns the default value of 0

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

pub fn default() -> [T; 14]

impl<A, B, C, D, E, F, G, H, I, J, K> Default for (A, B, C, D, E, F, G, H, I, J, K) where
    C: Default,
    B: Default,
    E: Default,
    A: Default,
    K: Default,
    I: Default,
    F: Default,
    G: Default,
    D: Default,
    H: Default,
    J: Default, 

pub fn default() -> (A, B, C, D, E, F, G, H, I, J, K)

impl Default for i16

pub fn default() -> i16

Returns the default value of 0

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

pub fn default() -> [T; 17]

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

pub fn default() -> [T; 1]

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

pub fn default() -> [T; 3]

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

pub fn default() -> [T; 26]

impl Default for i128

pub fn default() -> i128

Returns the default value of 0

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

pub fn default() -> [T; 22]

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

pub fn default() -> [T; 21]

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

pub fn default() -> [T; 5]

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

pub fn default() -> [T; 12]

impl Default for ()

pub fn default()

Returns the default value of ()

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

pub fn default() -> [T; 18]

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

pub fn default() -> [T; 32]

impl<T> Default for [T; 0]

pub fn default() -> [T; 0]

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

pub fn default() -> [T; 25]

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

pub fn default() -> [T; 6]

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

pub fn default() -> [T; 30]

impl<'_> Default for &'_ str

pub fn default() -> &'_ str

Creates an empty str

impl<A> Default for (A,) where
    A: Default, 

pub fn default() -> (A,)

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

pub fn default() -> [T; 27]

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

pub fn default() -> [T; 13]

impl<A, B, C, D, E, F> Default for (A, B, C, D, E, F) where
    C: Default,
    B: Default,
    E: Default,
    A: Default,
    F: Default,
    D: Default, 

pub fn default() -> (A, B, C, D, E, F)

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

pub fn default() -> [T; 20]

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

pub fn default() -> [T; 11]

impl Default for i64

pub fn default() -> i64

Returns the default value of 0

impl<'_, T> Default for &'_ [T]

pub fn default() -> &'_ [T]

Creates an empty slice.

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

pub fn default() -> [T; 10]

impl<T> Default for LinkedList<T>

pub fn default() -> LinkedList<T>

Creates an empty LinkedList<T>.

impl<T> Default for Vec<T, Global>

pub fn default() -> Vec<T, Global>

Creates an empty Vec<T>.

impl<T> Default for BinaryHeap<T> where
    T: Ord, 

pub fn default() -> BinaryHeap<T>

Creates an empty BinaryHeap<T>.

impl<T> Default for Rc<T> where
    T: Default, 

pub fn default() -> Rc<T>

Creates a new Rc<T>, with the Default value for T.

Examples

use std::rc::Rc;

let x: Rc<i32> = Default::default();
assert_eq!(*x, 0);

impl<T> Default for Weak<T>

pub fn default() -> Weak<T>

Constructs a new Weak<T>, without allocating memory. Calling upgrade on the return value always gives None.

Examples

use std::sync::Weak;

let empty: Weak<i64> = Default::default();
assert!(empty.upgrade().is_none());

impl<T> Default for Weak<T>

pub fn default() -> Weak<T>

Constructs a new Weak<T>, without allocating any memory. Calling upgrade on the return value always gives None.

Examples

use std::rc::Weak;

let empty: Weak<i64> = Default::default();
assert!(empty.upgrade().is_none());

impl Default for Box<str, Global>

pub fn default() -> Box<str, Global>

impl<T> Default for Box<T, Global> where
    T: Default, 

pub fn default() -> Box<T, Global>

Creates a Box<T>, with the Default value for T.

impl Default for String

pub fn default() -> String

Creates an empty String.

impl Default for Global

pub fn default() -> Global

impl<T> Default for Box<[T], Global>

pub fn default() -> Box<[T], Global>

impl Default for Buffer

pub fn default() -> Buffer

impl Default for Buffer

pub fn default() -> Buffer

impl<T, FORMAT> Default for OneOrMany<T, FORMAT> where
    T: Default,
    FORMAT: Default + Format, 

pub fn default() -> OneOrMany<T, FORMAT>

impl Default for Same

pub fn default() -> Same

impl<FORMAT, STRICTNESS> Default for TimestampNanoSeconds<FORMAT, STRICTNESS> where
    FORMAT: Default + Format,
    STRICTNESS: Default + Strictness, 

pub fn default() -> TimestampNanoSeconds<FORMAT, STRICTNESS>

impl<FORMAT, STRICTNESS> Default for DurationNanoSeconds<FORMAT, STRICTNESS> where
    FORMAT: Default + Format,
    STRICTNESS: Default + Strictness, 

pub fn default() -> DurationNanoSeconds<FORMAT, STRICTNESS>

impl<FORMAT, STRICTNESS> Default for DurationSecondsWithFrac<FORMAT, STRICTNESS> where
    FORMAT: Default + Format,
    STRICTNESS: Default + Strictness, 

pub fn default() -> DurationSecondsWithFrac<FORMAT, STRICTNESS>

impl<T> Default for As<T> where
    T: Default + ?Sized, 

pub fn default() -> As<T>

impl<FORMAT, STRICTNESS> Default for TimestampMicroSeconds<FORMAT, STRICTNESS> where
    FORMAT: Default + Format,
    STRICTNESS: Default + Strictness, 

pub fn default() -> TimestampMicroSeconds<FORMAT, STRICTNESS>

impl<FORMAT, STRICTNESS> Default for DurationMilliSeconds<FORMAT, STRICTNESS> where
    FORMAT: Default + Format,
    STRICTNESS: Default + Strictness, 

pub fn default() -> DurationMilliSeconds<FORMAT, STRICTNESS>

impl Default for PreferMany

pub fn default() -> PreferMany

impl Default for Lowercase

pub fn default() -> Lowercase

impl<FORMAT, STRICTNESS> Default for DurationNanoSecondsWithFrac<FORMAT, STRICTNESS> where
    FORMAT: Default + Format,
    STRICTNESS: Default + Strictness, 

pub fn default() -> DurationNanoSecondsWithFrac<FORMAT, STRICTNESS>

impl Default for Strict

pub fn default() -> Strict

impl Default for Flexible

pub fn default() -> Flexible

impl Default for Uppercase

pub fn default() -> Uppercase

impl<T> Default for PickFirst<T> where
    T: Default, 

pub fn default() -> PickFirst<T>

impl<FORMAT, STRICTNESS> Default for TimestampMicroSecondsWithFrac<FORMAT, STRICTNESS> where
    FORMAT: Default + Format,
    STRICTNESS: Default + Strictness, 

pub fn default() -> TimestampMicroSecondsWithFrac<FORMAT, STRICTNESS>

impl<T> Default for DefaultOnNull<T> where
    T: Default, 

pub fn default() -> DefaultOnNull<T>

impl Default for NoneAsEmptyString

pub fn default() -> NoneAsEmptyString

impl<Sep, T> Default for StringWithSeparator<Sep, T> where
    T: Default,
    Sep: Default, 

pub fn default() -> StringWithSeparator<Sep, T>

impl Default for SpaceSeparator

pub fn default() -> SpaceSeparator

impl<FORMAT, STRICTNESS> Default for TimestampSeconds<FORMAT, STRICTNESS> where
    FORMAT: Default + Format,
    STRICTNESS: Default + Strictness, 

pub fn default() -> TimestampSeconds<FORMAT, STRICTNESS>

impl Default for DisplayFromStr

pub fn default() -> DisplayFromStr

impl<FORMAT, STRICTNESS> Default for DurationMicroSecondsWithFrac<FORMAT, STRICTNESS> where
    FORMAT: Default + Format,
    STRICTNESS: Default + Strictness, 

pub fn default() -> DurationMicroSecondsWithFrac<FORMAT, STRICTNESS>

impl<FORMAT, STRICTNESS> Default for DurationSeconds<FORMAT, STRICTNESS> where
    FORMAT: Default + Format,
    STRICTNESS: Default + Strictness, 

pub fn default() -> DurationSeconds<FORMAT, STRICTNESS>

impl<FORMAT, STRICTNESS> Default for TimestampNanoSecondsWithFrac<FORMAT, STRICTNESS> where
    FORMAT: Default + Format,
    STRICTNESS: Default + Strictness, 

pub fn default() -> TimestampNanoSecondsWithFrac<FORMAT, STRICTNESS>

impl<FORMAT, STRICTNESS> Default for DurationMicroSeconds<FORMAT, STRICTNESS> where
    FORMAT: Default + Format,
    STRICTNESS: Default + Strictness, 

pub fn default() -> DurationMicroSeconds<FORMAT, STRICTNESS>

impl<FORMAT, STRICTNESS> Default for TimestampMilliSeconds<FORMAT, STRICTNESS> where
    FORMAT: Default + Format,
    STRICTNESS: Default + Strictness, 

pub fn default() -> TimestampMilliSeconds<FORMAT, STRICTNESS>

impl Default for CommaSeparator

pub fn default() -> CommaSeparator

impl<FORMAT, STRICTNESS> Default for DurationMilliSecondsWithFrac<FORMAT, STRICTNESS> where
    FORMAT: Default + Format,
    STRICTNESS: Default + Strictness, 

pub fn default() -> DurationMilliSecondsWithFrac<FORMAT, STRICTNESS>

impl Default for Bytes

pub fn default() -> Bytes

impl Default for PreferOne

pub fn default() -> PreferOne

impl<T> Default for DefaultOnError<T> where
    T: Default, 

pub fn default() -> DefaultOnError<T>

impl<FORMAT, STRICTNESS> Default for TimestampSecondsWithFrac<FORMAT, STRICTNESS> where
    FORMAT: Default + Format,
    STRICTNESS: Default + Strictness, 

pub fn default() -> TimestampSecondsWithFrac<FORMAT, STRICTNESS>

impl<FORMAT, STRICTNESS> Default for TimestampMilliSecondsWithFrac<FORMAT, STRICTNESS> where
    FORMAT: Default + Format,
    STRICTNESS: Default + Strictness, 

pub fn default() -> TimestampMilliSecondsWithFrac<FORMAT, STRICTNESS>

impl Default for BytesOrString

pub fn default() -> BytesOrString

impl Default for AhoCorasickBuilder

pub fn default() -> AhoCorasickBuilder

impl Default for Config

pub fn default() -> Config

impl Default for MatchKind

The default match kind is MatchKind::Standard.

pub fn default() -> MatchKind

impl Default for MatchKind

pub fn default() -> MatchKind

impl Default for Builder

pub fn default() -> Builder

impl Default for TranslatorBuilder

pub fn default() -> TranslatorBuilder

impl Default for ParserBuilder

pub fn default() -> ParserBuilder

impl Default for ClassBytesRange

pub fn default() -> ClassBytesRange

impl Default for ClassUnicodeRange

pub fn default() -> ClassUnicodeRange

impl Default for ParserBuilder

pub fn default() -> ParserBuilder

impl Default for ColorSpec

pub fn default() -> ColorSpec

impl Default for Backtrace

pub fn default() -> Backtrace

impl<R> Default for DebugLocLists<R> where
    R: Default, 

pub fn default() -> DebugLocLists<R>

impl<R> Default for DebugLoc<R> where
    R: Default, 

pub fn default() -> DebugLoc<R>

impl<R> Default for DebugTypes<R> where
    R: Default, 

pub fn default() -> DebugTypes<R>

impl Default for BaseAddresses

pub fn default() -> BaseAddresses

impl<R> Default for DebugInfo<R> where
    R: Default, 

pub fn default() -> DebugInfo<R>

impl<R> Default for DebugAbbrev<R> where
    R: Default, 

pub fn default() -> DebugAbbrev<R>

impl Default for RunTimeEndian

pub fn default() -> RunTimeEndian

impl Default for LineEncoding

pub fn default() -> LineEncoding

impl<R> Default for RangeLists<R> where
    R: Default, 

pub fn default() -> RangeLists<R>

impl<R> Default for DebugLineStr<R> where
    R: Default, 

pub fn default() -> DebugLineStr<R>

impl<R> Default for UninitializedUnwindContext<R> where
    R: Reader, 

pub fn default() -> UninitializedUnwindContext<R>

impl<R> Default for DebugStrOffsets<R> where
    R: Default, 

pub fn default() -> DebugStrOffsets<R>

impl Default for Pointer

pub fn default() -> Pointer

impl<R> Default for DebugAddr<R> where
    R: Default, 

pub fn default() -> DebugAddr<R>

impl<R> Default for DebugLine<R> where
    R: Default, 

pub fn default() -> DebugLine<R>

impl Default for DwarfFileType

pub fn default() -> DwarfFileType

impl<R> Default for DebugStr<R> where
    R: Default, 

pub fn default() -> DebugStr<R>

impl Default for Augmentation

pub fn default() -> Augmentation

impl<R> Default for DebugRanges<R> where
    R: Default, 

pub fn default() -> DebugRanges<R>

impl Default for BigEndian

pub fn default() -> BigEndian

impl Default for Abbreviations

pub fn default() -> Abbreviations

impl<R> Default for RangeIter<R> where
    R: Reader, 

pub fn default() -> RangeIter<R>

impl<'input, Endian> Default for EndianSlice<'input, Endian> where
    Endian: Default + Endianity, 

pub fn default() -> EndianSlice<'input, Endian>

impl Default for LittleEndian

pub fn default() -> LittleEndian

impl Default for SectionBaseAddresses

pub fn default() -> SectionBaseAddresses

impl<R> Default for UnwindTableRow<R> where
    R: Reader, 

pub fn default() -> UnwindTableRow<R>

impl<R> Default for DebugRngLists<R> where
    R: Default, 

pub fn default() -> DebugRngLists<R>

impl<R> Default for CfaRule<R> where
    R: Reader, 

pub fn default() -> CfaRule<R>

impl<R> Default for Dwarf<R> where
    R: Default, 

pub fn default() -> Dwarf<R>

impl<R> Default for LocationLists<R> where
    R: Default, 

pub fn default() -> LocationLists<R>

impl<'data, Elf> Default for SectionTable<'data, Elf> where
    Elf: Default + FileHeader,
    <Elf as FileHeader>::SectionHeader: Default, 

pub fn default() -> SectionTable<'data, Elf>

impl<'data> Default for Bytes<'data>

pub fn default() -> Bytes<'data>

impl<E> Default for I16Bytes<E> where
    E: Default + Endian, 

pub fn default() -> I16Bytes<E>

impl Default for LittleEndian

pub fn default() -> LittleEndian

impl<E> Default for I64Bytes<E> where
    E: Default + Endian, 

pub fn default() -> I64Bytes<E>

impl<'data> Default for StringTable<'data>

pub fn default() -> StringTable<'data>

impl<E> Default for U16Bytes<E> where
    E: Default + Endian, 

pub fn default() -> U16Bytes<E>

impl<E> Default for CompressionHeader64<E> where
    E: Default + Endian, 

pub fn default() -> CompressionHeader64<E>

impl<T> Default for SymbolMap<T> where
    T: Default + SymbolMapEntry, 

pub fn default() -> SymbolMap<T>

impl<'data, Mach> Default for SymbolTable<'data, Mach> where
    Mach: MachHeader, 

pub fn default() -> SymbolTable<'data, Mach>

impl<E> Default for CompressionHeader32<E> where
    E: Default + Endian, 

pub fn default() -> CompressionHeader32<E>

impl<'data> Default for ObjectMapEntry<'data>

pub fn default() -> ObjectMapEntry<'data>

impl<E> Default for U32Bytes<E> where
    E: Default + Endian, 

pub fn default() -> U32Bytes<E>

impl<'data, 'file> Default for PeRelocationIterator<'data, 'file>

pub fn default() -> PeRelocationIterator<'data, 'file>

impl Default for BigEndian

pub fn default() -> BigEndian

impl<'data> Default for SectionTable<'data>

pub fn default() -> SectionTable<'data>

impl<'data> Default for ObjectMap<'data>

pub fn default() -> ObjectMap<'data>

impl Default for Endianness

pub fn default() -> Endianness

impl<'data, Elf> Default for SymbolTable<'data, Elf> where
    Elf: FileHeader, 

pub fn default() -> SymbolTable<'data, Elf>

impl<E> Default for U64Bytes<E> where
    E: Default + Endian, 

pub fn default() -> U64Bytes<E>

impl<E> Default for I32Bytes<E> where
    E: Default + Endian, 

pub fn default() -> I32Bytes<E>

impl Default for InflateState

pub fn default() -> InflateState

impl Default for DecompressorOxide

pub fn default() -> DecompressorOxide

Create a new tinfl_decompressor with all fields set to 0.

impl Default for CompressorOxide

pub fn default() -> CompressorOxide

Initialize the compressor with a level of 4, zlib wrapper and the default strategy.

impl Default for Adler32

pub fn default() -> Adler32

impl Default for Style

pub fn default() -> Style

impl<T> Default for Paint<T> where
    T: Default, 

pub fn default() -> Paint<T>

impl Default for Color

pub fn default() -> Color

impl<T> Default for Slab<T>

pub fn default() -> Slab<T>

impl<T> Default for Timer<T>

pub fn default() -> Timer<T>

impl Default for Builder

pub fn default() -> Builder

impl<T> Default for LazyCell<T>

pub fn default() -> LazyCell<T>

impl<T> Default for AtomicLazyCell<T>

pub fn default() -> AtomicLazyCell<T>

impl<I, A> Default for Box<IndexSlice<I, [A]>, Global> where
    I: Idx, 

pub fn default() -> Box<IndexSlice<I, [A]>, Global>

impl Default for UnparkResult

pub fn default() -> UnparkResult

impl Default for SpinWait

pub fn default() -> SpinWait

impl<A> Default for SmallVec<A> where
    A: Array, 

pub fn default() -> SmallVec<A>

impl Default for BigEndian

pub fn default() -> BigEndian

impl Default for LittleEndian

pub fn default() -> LittleEndian

impl Default for ThreadRng

pub fn default() -> ThreadRng

impl Default for OsRng

pub fn default() -> OsRng

impl Default for vec128_storage

pub fn default() -> vec128_storage

impl Default for vec256_storage

pub fn default() -> vec256_storage

impl Default for vec512_storage

pub fn default() -> vec512_storage

impl Default for Idna

pub fn default() -> Idna

impl Default for Errors

pub fn default() -> Errors

impl Default for Config

The defaults are that of https://url.spec.whatwg.org/#idna

pub fn default() -> Config

impl<A> Default for ArrayVec<A> where
    A: Array, 

pub fn default() -> ArrayVec<A>

impl<A> Default for TinyVec<A> where
    A: Array, 

#[must_use]

pub fn default() -> TinyVec<A>

impl<'s, T> Default for SliceVec<'s, T>

#[must_use]

pub fn default() -> SliceVec<'s, T>

impl Default for WS

pub fn default() -> WS

impl Default for Context

pub fn default() -> Context

impl Default for Tera

pub fn default() -> Tera

impl Default for Pattern

pub fn default() -> Pattern

impl Default for MatchOptions

pub fn default() -> MatchOptions

impl Default for SentenceBreak

pub fn default() -> SentenceBreak

impl Default for GraphemeClusterBreak

pub fn default() -> GraphemeClusterBreak

impl Default for WordBreak

pub fn default() -> WordBreak

impl<V> Default for CharDataTable<V>

pub fn default() -> CharDataTable<V>

impl Default for UnicodeVersion

pub fn default() -> UnicodeVersion

impl<'a, 'b> Default for Builder<'a, 'b>

pub fn default() -> Builder<'a, 'b>

impl<'a> Default for Values<'a>

Creates an empty iterator.

pub fn default() -> Values<'a>

impl<'a, 'b> Default for Arg<'a, 'b> where
    'a: 'b, 

pub fn default() -> Arg<'a, 'b>

impl<'a> Default for OsValues<'a>

Creates an empty iterator.

pub fn default() -> OsValues<'a>

impl<'a> Default for ArgMatches<'a>

pub fn default() -> ArgMatches<'a>

impl<'a> Default for ArgGroup<'a>

pub fn default() -> ArgGroup<'a>

impl Default for Style

pub fn default() -> Style

Returns a style with no properties set. Formatting text using this style returns the exact same text.

use ansi_term::Style;
assert_eq!(None,  Style::default().foreground);
assert_eq!(None,  Style::default().background);
assert_eq!(false, Style::default().is_bold);
assert_eq!("txt", Style::default().paint("txt").to_string());

impl<V> Default for VecMap<V>

pub fn default() -> VecMap<V>

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Implementors

impl Default for OccultationKindGeneral<(OccDisplacement, ZCoord)>

pub fn default() -> OccultationKindGeneral<(OccDisplacement, ZCoord)>

impl Default for PieceAngle

pub fn default() -> PieceAngle

impl Default for PieceMoveable

pub fn default() -> PieceMoveable

impl Default for PresentationLayout

pub fn default() -> PresentationLayout

impl Default for Value

The default value is Value::Null.

This is useful for handling omitted Value fields when deserializing.

Examples

use serde_json::Value;

#[derive(Deserialize)]
struct Settings {
    level: i32,
    #[serde(default)]
    extras: Value,
}

let data = r#" { "level": 42 } "#;
let s: Settings = serde_json::from_str(data)?;

assert_eq!(s.level, 42);
assert_eq!(s.extras, Value::Null);

pub fn default() -> Value

impl Default for PieceLabelPlace

pub fn default() -> PieceLabelPlace

impl Default for Target

pub fn default() -> Target

impl Default for TimestampPrecision

The default timestamp precision is seconds.

pub fn default() -> TimestampPrecision

impl Default for WriteStyle

pub fn default() -> WriteStyle

impl Default for DeferredNow

pub fn default() -> DeferredNow

impl Default for LogSpecBuilder

pub fn default() -> LogSpecBuilder

impl Default for Error

pub fn default() -> Error

impl Default for DefaultHasher

pub fn default() -> DefaultHasher

Creates a new DefaultHasher using new. See its documentation for more.

impl Default for RandomState

pub fn default() -> RandomState

Constructs a new RandomState.

impl Default for otter_api_tests::serde_json::Map<String, Value>

pub fn default() -> Map<String, Value>

impl Default for PlHeld

pub fn default() -> PlHeld

impl Default for PlHist

pub fn default() -> PlHist

impl Default for otter_api_tests::shapelib::Condvar

pub fn default() -> Condvar

impl Default for Duration

pub fn default() -> Duration

impl Default for LogSpecification

pub fn default() -> LogSpecification

impl Default for PathBuf

pub fn default() -> PathBuf

impl Default for Registry

pub fn default() -> Registry

impl Default for ZCoord

pub fn default() -> ZCoord

impl Default for AccountId

pub fn default() -> AccountId

impl Default for Accounts

pub fn default() -> Accounts

impl Default for ClientId

pub fn default() -> ClientId

impl Default for ColourSpec

pub fn default() -> ColourSpec

impl Default for CompassAngle

pub fn default() -> CompassAngle

impl Default for FaceId

pub fn default() -> FaceId

impl Default for FakeRngSpec

pub fn default() -> FakeRngSpec

impl Default for GPieces

pub fn default() -> GPieces

impl Default for GameOccults

pub fn default() -> GameOccults

impl Default for otter_api_tests::Global

pub fn default() -> Global

impl Default for IOccults

pub fn default() -> IOccults

impl Default for LinksTable

pub fn default() -> LinksTable

impl Default for Notches

pub fn default() -> Notches

impl Default for OccId

pub fn default() -> OccId

impl Default for OccultIlkId

pub fn default() -> OccultIlkId

impl Default for OccultIlks

pub fn default() -> OccultIlks

impl Default for PerPlayerIdMap

pub fn default() -> PerPlayerIdMap

impl Default for PieceAliases

pub fn default() -> PieceAliases

impl Default for PieceId

pub fn default() -> PieceId

impl Default for PieceOccult

pub fn default() -> PieceOccult

impl Default for PlayerId

pub fn default() -> PlayerId

impl Default for Timezone

pub fn default() -> Timezone

impl Default for UrlSpec

pub fn default() -> UrlSpec

impl Default for VisiblePieceId

pub fn default() -> VisiblePieceId

impl Default for WholeServerConfig

pub fn default() -> WholeServerConfig

impl Default for Parsed

pub fn default() -> Parsed

impl Default for otter_api_tests::imports::env_logger::filter::Builder

pub fn default() -> Builder

impl Default for otter_api_tests::imports::env_logger::Builder

pub fn default() -> Builder

impl Default for otter_api_tests::imports::glob::MatchOptions

pub fn default() -> MatchOptions

impl Default for otter_api_tests::imports::glob::Pattern

pub fn default() -> Pattern

impl Default for CpuSet

pub fn default() -> CpuSet

impl Default for Dqblk

pub fn default() -> Dqblk

impl Default for QuotaValidFlags

pub fn default() -> QuotaValidFlags

impl Default for FdSet

pub fn default() -> FdSet

impl Default for UnixCredentials

pub fn default() -> UnixCredentials

impl Default for FsFlags

pub fn default() -> FsFlags

impl Default for OnceBool

pub fn default() -> OnceBool

impl Default for OnceNonZeroUsize

pub fn default() -> OnceNonZeroUsize

impl Default for IgnoredAny

pub fn default() -> IgnoredAny

impl Default for Once

pub fn default() -> Once

impl Default for DefaultKey

pub fn default() -> DefaultKey

impl Default for KeyData

pub fn default() -> KeyData

impl Default for otter_api_tests::imports::toml::value::Map<String, Value>

pub fn default() -> Map<String, Value>

impl Default for UnixSocketAddr

pub fn default() -> UnixSocketAddr

impl Default for otter_api_tests::imports::failure::Backtrace

pub fn default() -> Backtrace

impl Default for SipHasher

pub fn default() -> SipHasher

impl Default for PhantomPinned

pub fn default() -> PhantomPinned

impl Default for RangeFull

pub fn default() -> RangeFull

impl Default for AtomicBool

pub fn default() -> AtomicBool

Creates an AtomicBool initialized to false.

impl Default for AtomicI8

pub fn default() -> AtomicI8

impl Default for AtomicI16

pub fn default() -> AtomicI16

impl Default for AtomicI32

pub fn default() -> AtomicI32

impl Default for AtomicI64

pub fn default() -> AtomicI64

impl Default for AtomicIsize

pub fn default() -> AtomicIsize

impl Default for AtomicU8

pub fn default() -> AtomicU8

impl Default for AtomicU16

pub fn default() -> AtomicU16

impl Default for AtomicU32

pub fn default() -> AtomicU32

impl Default for AtomicU64

pub fn default() -> AtomicU64

impl Default for AtomicUsize

pub fn default() -> AtomicUsize

impl<'_> Default for &'_ OsStr

pub fn default() -> &'_ OsStr

Creates an empty OsStr.

impl<'_> Default for Chain<'_>

pub fn default() -> Chain<'_>

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

pub fn default() -> Cow<'_, B>

Creates an owned Cow<’a, B> with the default value for the contained owned value.

impl<'_, I, T> Default for &'_ IndexSlice<I, [T]> where
    I: Idx, 

pub fn default() -> &'_ IndexSlice<I, [T]>

impl<'_, I, T> Default for &'_ mut IndexSlice<I, [T]> where
    I: Idx, 

pub fn default() -> &'_ mut IndexSlice<I, [T]>

impl<'a> Default for PrettyFormatter<'a>

pub fn default() -> PrettyFormatter<'a>

impl<'a> Default for Env<'a>

pub fn default() -> Env<'a>

impl<A> Default for otter_api_tests::shapelib::ArrayVec<A> where
    A: Array, 

pub fn default() -> ArrayVec<A>

Return an empty array

impl<A> Default for ArrayString<A> where
    A: Array<Item = u8> + Copy, 

pub fn default() -> ArrayString<A>

Return an empty ArrayString

impl<E> Default for Compat<E> where
    E: Default, 

pub fn default() -> Compat<E>

impl<H> Default for BuildHasherDefault<H>

pub fn default() -> BuildHasherDefault<H>

impl<I, T> Default for IndexVec<I, T> where
    I: Idx, 

pub fn default() -> IndexVec<I, T>

impl<Id> Default for TokenRegistry<Id> where
    Id: Default + AccessId, 

pub fn default() -> TokenRegistry<Id>

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

pub fn default() -> Range<Idx>

impl<K, V> Default for BTreeMap<K, V> where
    K: Ord, 

pub fn default() -> BTreeMap<K, V>

Creates an empty BTreeMap.

impl<K, V> Default for DenseSlotMap<K, V> where
    K: Key, 

pub fn default() -> DenseSlotMap<K, V>

impl<K, V> Default for EnumMap<K, V> where
    K: Enum<V>,
    V: Default, 

pub fn default() -> EnumMap<K, V>

impl<K, V> Default for HopSlotMap<K, V> where
    K: Key, 

pub fn default() -> HopSlotMap<K, V>

impl<K, V> Default for SecondaryMap<K, V> where
    K: Key, 

pub fn default() -> SecondaryMap<K, V>

impl<K, V> Default for SlotMap<K, V> where
    K: Key, 

pub fn default() -> SlotMap<K, V>

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

pub fn default() -> HashMap<K, V, S>

Creates an empty HashMap<K, V, S>, with the Default value for the hasher.

impl<K, V, S> Default for SparseSecondaryMap<K, V, S> where
    S: BuildHasher + Default,
    K: Key, 

pub fn default() -> SparseSecondaryMap<K, V, S>

impl<P> Default for LoadedAcl<P> where
    P: Perm, 

pub fn default() -> LoadedAcl<P>

impl<P> Default for Acl<P> where
    P: Eq + Hash, 

pub fn default() -> Acl<P>

impl<R, G, T> Default for ReentrantMutex<R, G, T> where
    T: Default + ?Sized,
    R: RawMutex,
    G: GetThreadId, 

pub fn default() -> ReentrantMutex<R, G, T>

impl<R, T> Default for otter_api_tests::imports::parking_lot::lock_api::Mutex<R, T> where
    T: Default + ?Sized,
    R: RawMutex, 

pub fn default() -> Mutex<R, T>

impl<R, T> Default for otter_api_tests::imports::parking_lot::lock_api::RwLock<R, T> where
    T: Default + ?Sized,
    R: RawRwLock, 

pub fn default() -> RwLock<R, T>

impl<T> Default for Option<T>

pub fn default() -> Option<T>

Returns None.

Examples

let opt: Option<u32> = Option::default();
assert!(opt.is_none());

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

pub fn default() -> Reverse<T>

impl<T> Default for Cursor<T> where
    T: Default, 

pub fn default() -> Cursor<T>

impl<T> Default for Empty<T>

pub fn default() -> Empty<T>

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

pub fn default() -> ManuallyDrop<T>

impl<T> Default for Arc<T> where
    T: Default, 

pub fn default() -> Arc<T>

Creates a new Arc<T>, with the Default value for T.

Examples

use std::sync::Arc;

let x: Arc<i32> = Default::default();
assert_eq!(*x, 0);

impl<T> Default for BTreeSet<T> where
    T: Ord, 

pub fn default() -> BTreeSet<T>

Creates an empty BTreeSet.

impl<T> Default for OrderedFloat<T> where
    T: Default, 

pub fn default() -> OrderedFloat<T>

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

pub fn default() -> PhantomData<T>

impl<T> Default for VecDeque<T>

pub fn default() -> VecDeque<T>

Creates an empty VecDeque<T>.

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

pub fn default() -> Wrapping<T>

impl<T> Default for RefCell<T> where
    T: Default, 

pub fn default() -> RefCell<T>

Creates a RefCell<T>, with the Default value for T.

impl<T> Default for otter_api_tests::imports::lazy_init::Lazy<T>

pub fn default() -> Lazy<T>

impl<T> Default for AlgSetKey<T>

pub fn default() -> AlgSetKey<T>

impl<T> Default for OnceBox<T>

pub fn default() -> OnceBox<T>

impl<T> Default for otter_api_tests::imports::once_cell::sync::Lazy<T, fn() -> T> where
    T: Default, 

pub fn default() -> Lazy<T, fn() -> T>

Creates a new lazy value using Default as the initializing function.

impl<T> Default for otter_api_tests::imports::once_cell::sync::OnceCell<T>

pub fn default() -> OnceCell<T>

impl<T> Default for otter_api_tests::imports::once_cell::unsync::Lazy<T, fn() -> T> where
    T: Default, 

pub fn default() -> Lazy<T, fn() -> T>

Creates a new lazy value using Default as the initializing function.

impl<T> Default for otter_api_tests::imports::once_cell::unsync::OnceCell<T>

pub fn default() -> OnceCell<T>

impl<T> Default for NotNan<T> where
    T: Default, 

pub fn default() -> NotNan<T>

impl<T> Default for Cell<T> where
    T: Default, 

pub fn default() -> Cell<T>

Creates a Cell<T>, with the Default value for T.

impl<T> Default for UnsafeCell<T> where
    T: Default, 

pub fn default() -> UnsafeCell<T>

Creates an UnsafeCell, with the Default value for T.

impl<T> Default for otter_api_tests::imports::failure::_core::lazy::Lazy<T, fn() -> T> where
    T: Default, 

pub fn default() -> Lazy<T, fn() -> T>

Creates a new lazy value using Default as the initializing function.

impl<T> Default for otter_api_tests::imports::failure::_core::lazy::OnceCell<T>

pub fn default() -> OnceCell<T>

impl<T> Default for AtomicPtr<T>

pub fn default() -> AtomicPtr<T>

Creates a null AtomicPtr<T>.

impl<T, I> Default for Deque<T, I> where
    I: Offset, 

pub fn default() -> Deque<T, I>

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

pub fn default() -> HashSet<T, S>

Creates an empty HashSet<T, S> with the Default value for the hasher.

impl<T, U> Default for LazyTransform<T, U> where
    T: Default, 

pub fn default() -> LazyTransform<T, U>

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