Struct Purpose 

pub struct Purpose(/* private fields */);

A validated purpose label for a code or form token (RFC-019).

Prevents mixing up purpose strings between operations; not a secret.

Implementations

impl Purpose

pub fn new(value: impl Into<String>) -> Option<Self>

Wrap a purpose string. Must be non-empty; returns None otherwise.

pub fn as_str(&self) -> &str

Borrow the purpose string.

Trait Implementations

impl Clone for Purpose

fn clone(&self) -> Purpose

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Purpose

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

Formats the value using the given formatter.

impl Display for Purpose

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

Formats the value using the given formatter.

impl Eq for Purpose

impl Hash for Purpose

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

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Purpose

fn eq(&self, other: &Purpose) -> 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 StructuralPartialEq for Purpose