Struct Epoch

pub struct Epoch(pub NonZeroUsize);

An epoch of a package

Epoch is used to indicate the downgrade of a package and is prepended to a version, delimited by a ":" (e.g. 1: is added to 0.10.0-1 to form 1:0.10.0-1 which then orders newer than 1.0.0-1).

An Epoch wraps a usize that is guaranteed to be greater than 0.

Examples

use std::str::FromStr;

use alpm_types::Epoch;

assert!(Epoch::from_str("1").is_ok());
assert!(Epoch::from_str("0").is_err());

Tuple Fields

0: NonZeroUsize

Implementations

impl Epoch

pub fn new(epoch: NonZeroUsize) -> Self

Create a new Epoch

Trait Implementations

impl Clone for Epoch

fn clone(&self) -> Epoch

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Epoch

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

Formats the value using the given formatter.

impl Display for Epoch

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

Formats the value using the given formatter.

impl FromStr for Epoch

fn from_str(s: &str) -> Result<Self, Self::Err>

Create an Epoch from a string and return it in a Result

type Err = Error

The associated error which can be returned from parsing.

impl Ord for Epoch

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

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Epoch

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Epoch

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

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl Copy for Epoch

impl Eq for Epoch

impl StructuralPartialEq for Epoch