Enum Hyphens 

#[non_exhaustive]
pub enum Hyphens {
    Allow,
    CheckFirstLast,
    Check,
}

The CheckHyphens mode.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Allow

CheckHyphens=false: Do not place positional restrictions on hyphens.

This mode is used by the WHATWG URL Standard for normal User Agent processing (i.e. not conformance checking).

CheckFirstLast

Prohibit hyphens in the first and last position in the label but allow in the third and fourth position.

Note that this mode rejects real-world names, including some GitHub user pages.

Check

CheckHyphens=true: Prohibit hyphens in the first, third, fourth, and last position in the label.

Note that this mode rejects real-world names, including YouTube CDN nodes and some GitHub user pages.

Trait Implementations

impl Clone for Hyphens

fn clone(&self) -> Hyphens

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl PartialEq for Hyphens

fn eq(&self, other: &Hyphens) -> 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 Copy for Hyphens

impl Eq for Hyphens

impl StructuralPartialEq for Hyphens

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 1 byte

Size for each variant:

• Allow: 0 bytes
• CheckFirstLast: 0 bytes
• Check: 0 bytes