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Pair

scheme_rs::lists

Struct Pair

pub struct Pair(/* private fields */);

Expand description

A pair of Scheme Values. Has a head (the car) and a tail (the cdr).

Implementations§

impl Pair

pub fn new(car: Value, cdr: Value, mutable: bool) -> Self

Construct a new Pair from a car and cdr

pub fn car(&self) -> Value

Extract the car (aka the head) from the Pair.

pub fn head(&self) -> Value

Alias for car

pub fn cdr(&self) -> Value

Extract the cdr (aka the tail) from the Pair.

pub fn tail(&self) -> Value

Alias for cdr

pub fn set_car(&self, new_car: Value) -> Result<(), Exception>

Set the car of the Pair. Returns an error if pair is immutable.

pub fn set_cdr(&self, new_cdr: Value) -> Result<(), Exception>

Set the cdr of the Pair. Returns an error if pair is immutable.

Trait Implementations§

impl Clone for Pair

fn clone(&self) -> Pair

Returns a duplicate of the value. Read more

1.0.0 · Source§

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

Performs copy-assignment from source. Read more

impl From<Pair> for (Value, Value)

fn from(value: Pair) -> Self

Converts to this type from the input type.

impl From<Pair> for UnpackedValue

fn from(v: Pair) -> Self

Converts to this type from the input type.

impl From<Pair> for Value

fn from(v: Pair) -> Self

Converts to this type from the input type.

impl Trace for Pair

unsafe fn visit_children(&self, visitor: &mut dyn FnMut(OpaqueGcPtr))

Safety Read more

unsafe fn finalize(&mut self)

Safety Read more

impl TryFrom<&Value> for Pair

type Error = Exception

The type returned in the event of a conversion error.

fn try_from(v: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<UnpackedValue> for Pair

type Error = Exception

The type returned in the event of a conversion error.

fn try_from(v: UnpackedValue) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for Pair

type Error = Exception

The type returned in the event of a conversion error.

fn try_from(v: Value) -> Result<Self, Self::Error>

Performs the conversion.

Auto Trait Implementations§

impl Freeze for Pair

impl !RefUnwindSafe for Pair

impl Send for Pair

impl Sync for Pair

impl Unpin for Pair

impl !UnwindSafe for Pair

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

impl<T, U> ExactFrom<T> for U
where U: TryFrom<T>,

fn exact_from(value: T) -> U

impl<T, U> ExactInto<U> for T
where U: ExactFrom<T>,

fn exact_into(self) -> U

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> IntoEither for T

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

impl<T, U> OverflowingInto<U> for T
where U: OverflowingFrom<T>,

fn overflowing_into(self) -> (U, bool)

impl<T, U> RoundingInto<U> for T
where U: RoundingFrom<T>,

fn rounding_into(self, rm: RoundingMode) -> (U, Ordering)

impl<T> Same for T

type Output = T

Should always be Self

impl<T, U> SaturatingInto<U> for T
where U: SaturatingFrom<T>,

fn saturating_into(self) -> U

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom<U> for T
where 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>

Performs the conversion.

impl<T, U> TryInto<U> for T
where 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>

Performs the conversion.

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

fn vzip(self) -> V

impl<T, U> WrappingInto<U> for T
where U: WrappingFrom<T>,

fn wrapping_into(self) -> U