[−][src]Struct salsa::InternId
The "raw-id" is used for interned keys in salsa -- it is basically a newtype'd u32. Typically, it is wrapped in a type of your own devising. For more information about interned keys, see the interned key RFC.
Creating a InternId
InternId values can be constructed using the From
impls,
which are implemented for u32
and usize
:
let intern_id1 = InternId::from(22_u32); let intern_id2 = InternId::from(22_usize); assert_eq!(intern_id1, intern_id2);
Converting to a u32 or usize
Normally, there should be no need to access the underlying integer
in a InternId
. But if you do need to do so, you can convert to a
usize
using the as_u32
or as_usize
methods or the From
impls.
let intern_id = InternId::from(22_u32); let value = u32::from(intern_id); assert_eq!(value, 22);
Illegal values
Be warned, however, that InternId
values cannot be created from
arbitrary values -- in particular large values greater than
InternId::MAX
will panic. Those large values are reserved so that
the Rust compiler can use them as sentinel values, which means
that (for example) Option<InternId>
is represented in a single
word.
InternId::from(InternId::MAX);
Methods
impl InternId
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pub const MAX: u32
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The maximum allowed InternId
. This value can grow between
releases without affecting semver.
pub fn as_u32(self) -> u32
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Convert this raw-id into a u32 value.
let intern_id = InternId::from(22_u32); let value = intern_id.as_usize(); assert_eq!(value, 22);
pub fn as_usize(self) -> usize
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Convert this raw-id into a usize value.
let intern_id = InternId::from(22_u32); let value = intern_id.as_usize(); assert_eq!(value, 22);
Trait Implementations
impl InternKey for InternId
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fn from_intern_id(v: InternId) -> InternId
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fn as_intern_id(&self) -> InternId
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impl Clone for InternId
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fn clone(&self) -> InternId
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default fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more
impl Ord for InternId
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fn cmp(&self, other: &InternId) -> Ordering
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default fn max(self, other: Self) -> Self
1.21.0[src]
Compares and returns the maximum of two values. Read more
default fn min(self, other: Self) -> Self
1.21.0[src]
Compares and returns the minimum of two values. Read more
default fn clamp(self, min: Self, max: Self) -> Self
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clamp
)Restrict a value to a certain interval. Read more
impl Eq for InternId
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impl PartialOrd<InternId> for InternId
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fn partial_cmp(&self, other: &InternId) -> Option<Ordering>
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fn lt(&self, other: &InternId) -> bool
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fn le(&self, other: &InternId) -> bool
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fn gt(&self, other: &InternId) -> bool
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fn ge(&self, other: &InternId) -> bool
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impl Copy for InternId
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impl PartialEq<InternId> for InternId
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impl From<InternId> for u32
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impl From<InternId> for usize
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impl From<u32> for InternId
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impl From<usize> for InternId
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impl Display for InternId
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impl Debug for InternId
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impl Hash for InternId
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Auto Trait Implementations
Blanket Implementations
impl<T, U> Into for T where
U: From<T>,
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U: From<T>,
impl<T> ToString for T where
T: Display + ?Sized,
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T: Display + ?Sized,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
impl<T> From for T
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impl<T, U> TryFrom for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T> Borrow for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T, U> TryInto for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Erased for T
impl<Q, K> Equivalent for Q where
K: Borrow<Q> + ?Sized,
Q: Eq + ?Sized,
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K: Borrow<Q> + ?Sized,
Q: Eq + ?Sized,