Struct flatcontainer::impls::result::ResultRegion

pub struct ResultRegion<T, E> { /* private fields */ }

A region to hold Results.

Examples

Add results to a result region:

use flatcontainer::{Containerized, CopyOnto, Region, ResultRegion};
let mut r =
    <ResultRegion<<() as Containerized>::Region, <String as Containerized>::Region>>::default();

let ok_index = Result::<(), String>::Ok(()).copy_onto(&mut r);
let err_index = Result::<(), String>::Err("Error".to_string()).copy_onto(&mut r);

assert_eq!(Ok(()), r.index(ok_index));
assert_eq!(Err("Error"), r.index(err_index));

Trait Implementations

impl<T: Clone, E: Clone> Clone for ResultRegion<T, E>

fn clone(&self) -> ResultRegion<T, E>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a, T: 'a, TC, E: 'a, EC> CopyOnto<ResultRegion<TC, EC>> for &'a Result<T, E>

where TC: Region, EC: Region, &'a T: CopyOnto<TC>, &'a E: CopyOnto<EC>,

fn copy_onto( self, target: &mut ResultRegion<TC, EC> ) -> <ResultRegion<TC, EC> as Region>::Index

Copy self into the target container, returning an index that allows to look up the corresponding read item.

impl<T, TC, E, EC> CopyOnto<ResultRegion<TC, EC>> for Result<T, E>

where TC: Region, EC: Region, T: CopyOnto<TC>, E: CopyOnto<EC>,

fn copy_onto( self, target: &mut ResultRegion<TC, EC> ) -> <ResultRegion<TC, EC> as Region>::Index

Copy self into the target container, returning an index that allows to look up the corresponding read item.

impl<T: Debug, E: Debug> Debug for ResultRegion<T, E>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: Default, E: Default> Default for ResultRegion<T, E>

fn default() -> ResultRegion<T, E>

Returns the “default value” for a type.

impl<'de, T, E> Deserialize<'de> for ResultRegion<T, E>

where T: Deserialize<'de>, E: Deserialize<'de>,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T, E> Region for ResultRegion<T, E>

where T: Region, E: Region,

type ReadItem<'a> = Result<<T as Region>::ReadItem<'a>, <E as Region>::ReadItem<'a>> where Self: 'a

The type of the data that one gets out of the container.

type Index = Result<<T as Region>::Index, <E as Region>::Index>

The type to index into the container. Should be treated as an opaque type, even if known.

fn merge_regions<'a>(regions: impl Iterator<Item = &'a Self> + Clone) -> Self

where Self: 'a,

Construct a region that can absorb the contents of regions in the future.

fn index(&self, index: Self::Index) -> Self::ReadItem<'_>

Index into the container. The index must be obtained by pushing data into the container.

fn reserve_regions<'a, I>(&mut self, regions: I)

where Self: 'a, I: Iterator<Item = &'a Self> + Clone,

Ensure that the region can absorb the items of regions without reallocation

fn clear(&mut self)

Remove all elements from this region, but retain allocations if possible.

fn heap_size<F: FnMut(usize, usize)>(&self, callback: F)

Heap size, size - capacity

impl<'a, T: 'a, TC, E: 'a, EC> ReserveItems<ResultRegion<TC, EC>> for &'a Result<T, E>

where TC: Region, EC: Region, &'a T: ReserveItems<TC>, &'a E: ReserveItems<EC>,

fn reserve_items<I>(target: &mut ResultRegion<TC, EC>, items: I)

where I: Iterator<Item = Self> + Clone,

Ensure that the region can absorb items without reallocation.

impl<T, E> Serialize for ResultRegion<T, E>

where T: Serialize, E: Serialize,

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.