BigEndian

Struct BigEndian 

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pub struct BigEndian<T: EndianConvert>(/* private fields */);
Expand description

A wrapper type that stores a value in big-endian (network) byte order.

This type ensures that the wrapped value is always stored in big-endian format, regardless of the system’s native endianness. This is particularly useful for:

  • Network protocols (which typically use big-endian/“network byte order”)
  • File formats that specify big-endian storage
  • Cross-platform binary data interchange

The wrapper is #[repr(transparent)], meaning it has the same memory layout as its inner byte array, making it safe to use in packed structs.

§Type Parameters

  • T - The underlying numeric type that implements EndianConvert

§Examples

§Basic usage

use byteable::{BigEndian, IntoByteArray};

let value = BigEndian::new(0x12345678u32);

// The bytes are always stored in big-endian order
assert_eq!(value.into_byte_array(), [0x12, 0x34, 0x56, 0x78]);

// Get back the native value
assert_eq!(value.get(), 0x12345678u32);

§In a struct for network protocols

use byteable::{BigEndian, IntoByteArray};

#[derive(byteable::UnsafeByteableTransmute, Debug)]
#[repr(C, packed)]
struct TcpHeader {
    source_port: BigEndian<u16>,      // Network byte order
    dest_port: BigEndian<u16>,        // Network byte order
    sequence: BigEndian<u32>,         // Network byte order
}

let header = TcpHeader {
    source_port: 80.into(),
    dest_port: 8080.into(),
    sequence: 12345.into(),
};

§Comparison and hashing

use byteable::BigEndian;
use std::collections::HashMap;

let a = BigEndian::new(100u32);
let b = BigEndian::new(100u32);
let c = BigEndian::new(200u32);

assert_eq!(a, b);
assert!(a < c);

// Can be used as HashMap keys
let mut map = HashMap::new();
map.insert(a, "one hundred");
assert_eq!(map.get(&b), Some(&"one hundred"));

Implementations§

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impl<T: EndianConvert> BigEndian<T>

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pub fn new(value: T) -> Self

Creates a new BigEndian value from a native value.

The value is converted to big-endian byte order upon construction.

§Examples
use byteable::{BigEndian, IntoByteArray};

let be = BigEndian::new(0x1234u16);
assert_eq!(be.into_byte_array(), [0x12, 0x34]);
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pub fn get(self) -> T

Extracts the native value from this BigEndian wrapper.

The bytes are converted from big-endian to the system’s native byte order.

§Examples
use byteable::BigEndian;

let be = BigEndian::new(42u32);
assert_eq!(be.get(), 42);

Trait Implementations§

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impl<T: EndianConvert> AssociatedByteArray for BigEndian<T>

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type ByteArray = <T as AssociatedByteArray>::ByteArray

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const BYTE_SIZE: usize = <Self::ByteArray>::BYTE_SIZE

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impl<T: Clone + EndianConvert> Clone for BigEndian<T>

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fn clone(&self) -> BigEndian<T>

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<T: Debug + EndianConvert> Debug for BigEndian<T>

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

Formats the value using the given formatter. Read more
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impl<T: EndianConvert + Default> Default for BigEndian<T>

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<T: EndianConvert> From<T> for BigEndian<T>

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fn from(value: T) -> Self

Converts to this type from the input type.
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impl<T: EndianConvert> FromByteArray for BigEndian<T>

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fn from_byte_array(byte_array: Self::ByteArray) -> Self

Constructs a value from its byte array representation. Read more
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impl<T: Hash + EndianConvert> Hash for BigEndian<T>

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fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher. Read more
1.3.0 · Source§

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<T: EndianConvert> IntoByteArray for BigEndian<T>

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fn into_byte_array(self) -> Self::ByteArray

Converts self into its byte array representation. Read more
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impl<T: Ord + EndianConvert> Ord for BigEndian<T>

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fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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impl<T: PartialEq + EndianConvert> PartialEq for BigEndian<T>

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fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<T: PartialOrd + EndianConvert> PartialOrd for BigEndian<T>

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fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · Source§

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl<T: Copy + EndianConvert> Copy for BigEndian<T>

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impl<T: Eq + EndianConvert> Eq for BigEndian<T>

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impl ValidBytecastMarker for BigEndian<f32>

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impl ValidBytecastMarker for BigEndian<f64>

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impl ValidBytecastMarker for BigEndian<i128>

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impl ValidBytecastMarker for BigEndian<i16>

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impl ValidBytecastMarker for BigEndian<i32>

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impl ValidBytecastMarker for BigEndian<i64>

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impl ValidBytecastMarker for BigEndian<u128>

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impl ValidBytecastMarker for BigEndian<u16>

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impl ValidBytecastMarker for BigEndian<u32>

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impl ValidBytecastMarker for BigEndian<u64>

Auto Trait Implementations§

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

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impl<T> RefUnwindSafe for BigEndian<T>
where T: RefUnwindSafe,

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impl<T> Send for BigEndian<T>
where T: Send,

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impl<T> Sync for BigEndian<T>
where T: Sync,

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impl<T> Unpin for BigEndian<T>
where T: Unpin,

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impl<T> UnwindSafe for BigEndian<T>
where T: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T> TryFromByteArray for T
where T: FromByteArray,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from_byte_array( byte_array: <T as AssociatedByteArray>::ByteArray, ) -> Result<T, <T as TryFromByteArray>::Error>

Attempts to construct a value from its byte array representation.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> TryIntoByteArray for T
where T: IntoByteArray,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_into_byte_array( self, ) -> Result<<T as AssociatedByteArray>::ByteArray, <T as TryIntoByteArray>::Error>

Attempts to convert self into its byte array representation.