Struct salsa::InternId [−][src]
pub struct InternId { /* fields omitted */ }
Expand description
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);
Implementations
impl InternId
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impl InternId
[src]Trait Implementations
impl InternKey for InternId
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impl InternKey for InternId
[src]fn from_intern_id(v: InternId) -> InternId
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fn from_intern_id(v: InternId) -> InternId
[src]Create an instance of the intern-key from a u32
value.
fn as_intern_id(&self) -> InternId
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fn as_intern_id(&self) -> InternId
[src]Extract the u32
with which the intern-key was created.
impl Ord for InternId
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impl Ord for InternId
[src]impl PartialOrd<InternId> for InternId
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impl PartialOrd<InternId> for InternId
[src]fn partial_cmp(&self, other: &InternId) -> Option<Ordering>
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fn partial_cmp(&self, other: &InternId) -> Option<Ordering>
[src]This method returns an ordering between self
and other
values if one exists. Read more
#[must_use]fn lt(&self, other: &Rhs) -> bool
1.0.0[src]
#[must_use]fn lt(&self, other: &Rhs) -> bool
1.0.0[src]This method tests less than (for self
and other
) and is used by the <
operator. Read more
#[must_use]fn le(&self, other: &Rhs) -> bool
1.0.0[src]
#[must_use]fn le(&self, other: &Rhs) -> bool
1.0.0[src]This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
impl Copy for InternId
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impl Eq for InternId
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impl StructuralEq for InternId
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impl StructuralPartialEq for InternId
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Auto Trait Implementations
impl RefUnwindSafe for InternId
impl Send for InternId
impl Sync for InternId
impl Unpin for InternId
impl UnwindSafe for InternId
Blanket Implementations
impl<T> BorrowMut<T> for T where
T: ?Sized,
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impl<T> BorrowMut<T> for T where
T: ?Sized,
[src]pub fn borrow_mut(&mut self) -> &mut T
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pub fn borrow_mut(&mut self) -> &mut T
[src]Mutably borrows from an owned value. Read more
impl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
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impl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
[src]pub fn equivalent(&self, key: &K) -> bool
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pub fn equivalent(&self, key: &K) -> bool
[src]Compare self to key
and return true
if they are equal.
impl<T> ToOwned for T where
T: Clone,
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impl<T> ToOwned for T where
T: Clone,
[src]type Owned = T
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn to_owned(&self) -> T
[src]Creates owned data from borrowed data, usually by cloning. Read more
pub fn clone_into(&self, target: &mut T)
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pub fn clone_into(&self, target: &mut T)
[src]🔬 This is a nightly-only experimental API. (toowned_clone_into
)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more