pub struct Expr { /* private fields */ }
Expand description
An expression.
This is an effectively-immutable (see SymbolTable
example) expression tree for a value of any type.
It is completely opaque to users.
Users cannot directly create an instance of this type.
Instead, this should be created from ExprData
or Value
via into()
.
Note that Value
has its own From<T>
conversions so that primitive types can be used; e.g., let v: Expr = 2.into()
.
Trait Implementations
Auto Trait Implementations
impl !RefUnwindSafe for Expr
impl Send for Expr
impl !Sync for Expr
impl Unpin for Expr
impl UnwindSafe for Expr
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> CheckedAs for T
impl<T> CheckedAs for T
sourcepub fn checked_as<Dst>(self) -> Option<Dst> where
T: CheckedCast<Dst>,
pub fn checked_as<Dst>(self) -> Option<Dst> where
T: CheckedCast<Dst>,
Casts the value.
sourceimpl<Src, Dst> CheckedCastFrom<Src> for Dst where
Src: CheckedCast<Dst>,
impl<Src, Dst> CheckedCastFrom<Src> for Dst where
Src: CheckedCast<Dst>,
sourcepub fn checked_cast_from(src: Src) -> Option<Dst>
pub fn checked_cast_from(src: Src) -> Option<Dst>
Casts the value.
sourceimpl<T> OverflowingAs for T
impl<T> OverflowingAs for T
sourcepub fn overflowing_as<Dst>(self) -> (Dst, bool) where
T: OverflowingCast<Dst>,
pub fn overflowing_as<Dst>(self) -> (Dst, bool) where
T: OverflowingCast<Dst>,
Casts the value.
sourceimpl<Src, Dst> OverflowingCastFrom<Src> for Dst where
Src: OverflowingCast<Dst>,
impl<Src, Dst> OverflowingCastFrom<Src> for Dst where
Src: OverflowingCast<Dst>,
sourcepub fn overflowing_cast_from(src: Src) -> (Dst, bool)
pub fn overflowing_cast_from(src: Src) -> (Dst, bool)
OverflowingCasts the value.
sourceimpl<T> SaturatingAs for T
impl<T> SaturatingAs for T
sourcepub fn saturating_as<Dst>(self) -> Dst where
T: SaturatingCast<Dst>,
pub fn saturating_as<Dst>(self) -> Dst where
T: SaturatingCast<Dst>,
Casts the value.
sourceimpl<Src, Dst> SaturatingCastFrom<Src> for Dst where
Src: SaturatingCast<Dst>,
impl<Src, Dst> SaturatingCastFrom<Src> for Dst where
Src: SaturatingCast<Dst>,
sourcepub fn saturating_cast_from(src: Src) -> Dst
pub fn saturating_cast_from(src: Src) -> Dst
Casts the value.
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcepub fn to_owned(&self) -> T
pub fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
sourcepub fn clone_into(&self, target: &mut T)
pub fn clone_into(&self, target: &mut T)
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more
sourceimpl<T> UnwrappedAs for T
impl<T> UnwrappedAs for T
sourcepub fn unwrapped_as<Dst>(self) -> Dst where
T: UnwrappedCast<Dst>,
pub fn unwrapped_as<Dst>(self) -> Dst where
T: UnwrappedCast<Dst>,
Casts the value.
sourceimpl<Src, Dst> UnwrappedCastFrom<Src> for Dst where
Src: UnwrappedCast<Dst>,
impl<Src, Dst> UnwrappedCastFrom<Src> for Dst where
Src: UnwrappedCast<Dst>,
sourcepub fn unwrapped_cast_from(src: Src) -> Dst
pub fn unwrapped_cast_from(src: Src) -> Dst
UnwrappedCasts the value.
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
pub fn vzip(self) -> V
sourceimpl<T> WrappingAs for T
impl<T> WrappingAs for T
sourcepub fn wrapping_as<Dst>(self) -> Dst where
T: WrappingCast<Dst>,
pub fn wrapping_as<Dst>(self) -> Dst where
T: WrappingCast<Dst>,
Casts the value.
sourceimpl<Src, Dst> WrappingCastFrom<Src> for Dst where
Src: WrappingCast<Dst>,
impl<Src, Dst> WrappingCastFrom<Src> for Dst where
Src: WrappingCast<Dst>,
sourcepub fn wrapping_cast_from(src: Src) -> Dst
pub fn wrapping_cast_from(src: Src) -> Dst
WrappingCasts the value.