#[repr(transparent)]pub struct Variant(_);
Expand description
A variant subtag (examples: "macos"
, "posix"
, "1996"
etc.)
Variant
represents a Unicode base language code conformat to the
unicode_variant_id
field of the Language and Locale Identifier.
Examples
use icu::locid::subtags::Variant;
let variant: Variant =
"macos".parse().expect("Failed to parse a variant subtag.");
Implementations
sourceimpl Variant
impl Variant
sourcepub const fn try_from_bytes(v: &[u8]) -> Result<Self, ParserError>
pub const fn try_from_bytes(v: &[u8]) -> Result<Self, ParserError>
sourcepub const fn try_from_bytes_manual_slice(
v: &[u8],
start: usize,
end: usize
) -> Result<Self, ParserError>
pub const fn try_from_bytes_manual_slice(
v: &[u8],
start: usize,
end: usize
) -> Result<Self, ParserError>
Equivalent to try_from_bytes(bytes[start..end])
,
but callable in a const
context (which range indexing is not).
sourcepub const fn try_from_raw(v: [u8; 8]) -> Result<Self, ParserError>
pub const fn try_from_raw(v: [u8; 8]) -> Result<Self, ParserError>
Safely creates a Variant
from its raw format
as returned by Self::into_raw
. Unlike Self::try_from_bytes
,
this constructor only takes normalized values.
sourcepub const unsafe fn from_raw_unchecked(v: [u8; 8]) -> Self
pub const unsafe fn from_raw_unchecked(v: [u8; 8]) -> Self
Unsafely creates a Variant
from its raw format
as returned by Self::into_raw
. Unlike Self::try_from_bytes
,
this constructor only takes normalized values.
Safety
This function is safe iff Self::try_from_raw
returns an Ok
. This is the case
for inputs that are correctly normalized.
sourcepub const fn into_raw(self) -> [u8; 8]
pub const fn into_raw(self) -> [u8; 8]
Deconstructs into a raw format to be consumed by
from_raw_unchecked
or
try_from_raw
.
sourcepub fn strict_cmp(self, other: &[u8]) -> Ordering
pub fn strict_cmp(self, other: &[u8]) -> Ordering
Compare with BCP-47 bytes.
The return value is equivalent to what would happen if you first converted
self
to a BCP-47 string and then performed a byte comparison.
This function is case-sensitive and results in a total order, so it is appropriate for
binary search. The only argument producing Ordering::Equal
is self.as_str().as_bytes()
.
sourcepub fn normalizing_eq(self, other: &str) -> bool
pub fn normalizing_eq(self, other: &str) -> bool
Compare with a potentially unnormalized BCP-47 string.
The return value is equivalent to what would happen if you first parsed the BCP-47 string and then performed a structural comparison.
Trait Implementations
sourceimpl<'de> Deserialize<'de> for Variant
impl<'de> Deserialize<'de> for Variant
sourcefn deserialize<D>(deserializer: D) -> Result<Self, D::Error>where
D: Deserializer<'de>,
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>where
D: Deserializer<'de>,
sourceimpl Display for Variant
impl Display for Variant
This trait is implemented for compatibility with fmt!
.
To create a string, [Writeable::write_to_string
] is usually more efficient.
sourceimpl From<Variant> for TinyAsciiStr<8>
impl From<Variant> for TinyAsciiStr<8>
sourceimpl Ord for Variant
impl Ord for Variant
1.21.0 · sourcefn max(self, other: Self) -> Self
fn max(self, other: Self) -> Self
1.21.0 · sourcefn min(self, other: Self) -> Self
fn min(self, other: Self) -> Self
1.50.0 · sourcefn clamp(self, min: Self, max: Self) -> Selfwhere
Self: PartialOrd<Self>,
fn clamp(self, min: Self, max: Self) -> Selfwhere
Self: PartialOrd<Self>,
sourceimpl PartialOrd<Variant> for Variant
impl PartialOrd<Variant> for Variant
sourcefn partial_cmp(&self, other: &Variant) -> Option<Ordering>
fn partial_cmp(&self, other: &Variant) -> Option<Ordering>
1.0.0 · sourcefn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moresourceimpl ULE for Variant
impl ULE for Variant
sourcefn validate_byte_slice(bytes: &[u8]) -> Result<(), ZeroVecError>
fn validate_byte_slice(bytes: &[u8]) -> Result<(), ZeroVecError>
&[u8]
. Read moresourcefn parse_byte_slice(bytes: &[u8]) -> Result<&[Self], ZeroVecError>
fn parse_byte_slice(bytes: &[u8]) -> Result<&[Self], ZeroVecError>
sourceunsafe fn from_byte_slice_unchecked(bytes: &[u8]) -> &[Self]ⓘNotable traits for &[u8]impl Read for &[u8]impl Write for &mut [u8]
unsafe fn from_byte_slice_unchecked(bytes: &[u8]) -> &[Self]ⓘNotable traits for &[u8]impl Read for &[u8]impl Write for &mut [u8]
&[u8]
, and return it as &[Self]
with the same lifetime, assuming
that this byte slice has previously been run through Self::parse_byte_slice()
with
success. Read moresourceimpl Writeable for Variant
impl Writeable for Variant
sourcefn write_to<W: Write + ?Sized>(&self, sink: &mut W) -> Result
fn write_to<W: Write + ?Sized>(&self, sink: &mut W) -> Result
write_to_parts
, and discards any
Part
annotations. Read moresourcefn writeable_length_hint(&self) -> LengthHint
fn writeable_length_hint(&self) -> LengthHint
sourcefn write_to_parts<S>(&self, sink: &mut S) -> Result<(), Error>where
S: PartsWrite + ?Sized,
fn write_to_parts<S>(&self, sink: &mut S) -> Result<(), Error>where
S: PartsWrite + ?Sized,
Part
annotations to the given sink. Errors from the
sink are bubbled up. The default implementation delegates to write_to
,
and doesn’t produce any Part
annotations. Read moresourcefn write_to_string(&self) -> Cow<'_, str>
fn write_to_string(&self) -> Cow<'_, str>
String
with the data from this Writeable
. Like ToString
,
but smaller and faster. Read more