Struct git_hash::owned::Digest

pub struct Digest(_);

An owned hash identifying objects, most commonly Sha1

Implementations

impl Digest

Access and conversion

pub fn kind(&self) -> Kind

Returns the kind of hash used in this Digest

pub fn to_borrowed(&self) -> Digest<'_>

Return a borrowed version of this instance

pub fn as_slice(&self) -> &[u8]

Return the raw byte slice representing this hash

pub fn as_mut_slice(&mut self) -> &mut [u8]

Return the raw mutable byte slice representing this hash

pub fn write_hex_to(&self, mut out: impl Write) -> Result<()>

Write ourselves to out in hexadecimal notation

impl Digest

Sha1 hash specific methods

pub fn from_40_bytes_in_hex(buffer: &[u8]) -> Result<Digest, Error>

Create an instance from a buffer of 40 bytes encoded with hexadecimal notation.

Such a buffer can be obtained using write_hex_to(buffer)

pub fn sha1(&self) -> &[u8; 20]

Returns ourselves as slice of 20 bytes.

Panics if this instance is not a sha1 hash.

pub fn to_sha1_hex(&self) -> [u8; 40]

Return ourselves as array of 40 hexadecimal bytes.

Panics if this instance is not a sha1 hash.

pub fn to_sha1_hex_string(&self) -> String

Return ourselves as hexadecimal string with a length of 40 bytes.

Panics if this instance is not a sha1 hash.

pub fn new_sha1(id: [u8; 20]) -> Self

Instantiate an Digest from 20 bytes of a Sha1 digest.

pub fn from_20_bytes(b: &[u8]) -> Digest

Instantiate an Digest from a slice 20 borrowed bytes of a Sha1 digest.

Panics of the slice doesn't have a length of 20.

pub fn from_borrowed_sha1(b: &[u8; 20]) -> Digest

Instantiate an Digest from a borrowed array of 20 bytes of a Sha1 digest.

pub fn null_sha1() -> Digest

Returns an Digest representing a Sha1 with whose memory is zeroed.

Methods from Deref<Target = [u8; 20]>

pub fn as_slice(&self) -> &[T]

🔬 This is a nightly-only experimental API. (array_methods)

Returns a slice containing the entire array. Equivalent to &s[..].

pub fn each_ref(&self) -> [&T; N]

🔬 This is a nightly-only experimental API. (array_methods)

Borrows each element and returns an array of references with the same size as self.

Example

#![feature(array_methods)]

let floats = [3.1, 2.7, -1.0];
let float_refs: [&f64; 3] = floats.each_ref();
assert_eq!(float_refs, [&3.1, &2.7, &-1.0]);

This method is particularly useful if combined with other methods, like map. This way, you can can avoid moving the original array if its elements are not Copy.

#![feature(array_methods, array_map)]

let strings = ["Ferris".to_string(), "♥".to_string(), "Rust".to_string()];
let is_ascii = strings.each_ref().map(|s| s.is_ascii());
assert_eq!(is_ascii, [true, false, true]);

// We can still access the original array: it has not been moved.
assert_eq!(strings.len(), 3);

Trait Implementations

impl Clone for Digest

pub fn clone(&self) -> Digest

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Digest

impl Debug for Digest

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

Formats the value using the given formatter.

impl Deref for Digest

type Target = [u8; 20]

The resulting type after dereferencing.

pub fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'de> Deserialize<'de> for Digest

pub fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl Display for Digest

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

Formats the value using the given formatter.

impl Eq for Digest

impl From<[u8; 20]> for Digest

pub fn from(v: [u8; 20]) -> Self

Performs the conversion.

impl<'a> From<Digest<'a>> for Digest

pub fn from(v: Digest<'a>) -> Self

Performs the conversion.

impl Hash for Digest

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl Ord for Digest

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

This method returns an Ordering between self and other.

#[must_use]pub fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]pub fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]pub fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<Digest> for Digest

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

This method tests for self and other values to be equal, and is used by ==.

pub fn ne(&self, other: &Digest) -> bool

This method tests for !=.

impl PartialOrd<Digest> for Digest

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

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

pub fn le(&self, other: &Digest) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

pub fn gt(&self, other: &Digest) -> bool

This method tests greater than (for self and other) and is used by the > operator.

pub fn ge(&self, other: &Digest) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for Digest

pub fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl StructuralEq for Digest

impl StructuralPartialEq for Digest