[][src]Struct bidir_map::ByFirst

pub struct ByFirst<'q, Q: ?Sized + 'q>(pub &'q Q);

Wrapper type for getting second keys/values with first keys/values via Index.

To assume that by-first is the "default" would be incorrect, so thus you one can wrap their indices with this and all is swell.

Examples

use bidir_map::{BidirMap, ByFirst};

let mut map = BidirMap::new();
map.insert(1, "a");
assert_eq!(map[ByFirst(&1)], "a");
assert_eq!(map[&ByFirst(&1)], "a");

Trait Implementations

impl<'q, Q: Clone + ?Sized + 'q> Clone for ByFirst<'q, Q>
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Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

impl<'q, Q: Copy + ?Sized + 'q> Copy for ByFirst<'q, Q>
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impl<'q, Q: Eq + ?Sized + 'q> Eq for ByFirst<'q, Q>
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impl<'q, Q: PartialOrd + ?Sized + 'q> PartialOrd<ByFirst<'q, Q>> for ByFirst<'q, Q>
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This method returns an ordering between self and other values if one exists. Read more

This method tests less than (for self and other) and is used by the < operator. Read more

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

This method tests greater than (for self and other) and is used by the > operator. Read more

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

impl<'q, Q: PartialEq + ?Sized + 'q> PartialEq<ByFirst<'q, Q>> for ByFirst<'q, Q>
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This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

impl<'q, Q: Ord + ?Sized + 'q> Ord for ByFirst<'q, Q>
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This method returns an Ordering between self and other. Read more

Compares and returns the maximum of two values. Read more

Compares and returns the minimum of two values. Read more

impl<'q, Q: Hash + ?Sized + 'q> Hash for ByFirst<'q, Q>
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Feeds this value into the given [Hasher]. Read more

Feeds a slice of this type into the given [Hasher]. Read more

impl<'q, Kv1: PartialEq, Kv2: PartialEq, Q: ?Sized + 'q> Index<ByFirst<'q, Q>> for BidirMap<Kv1, Kv2> where
    Kv1: Borrow<Q>,
    Q: PartialEq<Kv1>, 
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The returned type after indexing.

Performs the indexing (container[index]) operation.

impl<'a, 'q, Kv1: PartialEq, Kv2: PartialEq, Q: ?Sized + 'q> Index<&'a ByFirst<'q, Q>> for BidirMap<Kv1, Kv2> where
    Kv1: Borrow<Q>,
    Q: PartialEq<Kv1>, 
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The returned type after indexing.

Performs the indexing (container[index]) operation.

Auto Trait Implementations

impl<'q, Q: ?Sized> Send for ByFirst<'q, Q> where
    Q: Sync

impl<'q, Q: ?Sized> Sync for ByFirst<'q, Q> where
    Q: Sync

Blanket Implementations

impl<T> From for T
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Performs the conversion.

impl<T, U> Into for T where
    U: From<T>, 
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Performs the conversion.

impl<T> ToOwned for T where
    T: Clone
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Creates owned data from borrowed data, usually by cloning. Read more

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

recently added

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

impl<T, U> TryFrom for T where
    T: From<U>, 
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🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T> Borrow for T where
    T: ?Sized
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Immutably borrows from an owned value. Read more

impl<T> BorrowMut for T where
    T: ?Sized
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Mutably borrows from an owned value. Read more

impl<T, U> TryInto for T where
    U: TryFrom<T>, 
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🔬 This is a nightly-only experimental API. (try_from)

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<T> Any for T where
    T: 'static + ?Sized
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🔬 This is a nightly-only experimental API. (get_type_id)

this method will likely be replaced by an associated static

Gets the TypeId of self. Read more