Enum VersionReq 

pub enum VersionReq {
    Latest,
    Spec(VersionSpec),
}

Represents a version requirement.

Variants

Latest

Used when the latest version is desired.

Spec(VersionSpec)

Used when a specific version is required, or one that matches a predicate.

Implementations

impl VersionReq

pub fn parse(s: &str) -> Result<Self, ParseVersionReqError>

Parses a string into a VersionReq.

Examples

let exact_req = VersionReq::parse("= 1.2.3")?;
let latest = VersionReq::parse("")?;

Trait Implementations

impl Clone for VersionReq

fn clone(&self) -> VersionReq

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VersionReq

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

Formats the value using the given formatter.

impl Display for VersionReq

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

Formats the value using the given formatter.

impl From<VersionReq> for VersionReq

fn from(value: VersionReq) -> Self

Converts to this type from the input type.

impl FromStr for VersionReq

type Err = ParseVersionReqError

The associated error which can be returned from parsing.

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

Parses a string s to return a value of this type.

impl PartialEq for VersionReq

fn eq(&self, other: &VersionReq) -> 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 TryFrom<VersionReq> for VersionReq

type Error = ParseVersionReqError

The type returned in the event of a conversion error.

fn try_from(value: VersionReq) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for VersionReq

impl Eq for VersionReq

impl StructuralPartialEq for VersionReq