[][src]Struct srml_indices::EnumSet

pub struct EnumSet<T: Trait>(_);

The enumeration sets.

Trait Implementations

impl<T: Trait> StorageMap<<T as Trait>::AccountIndex, Vec<<T as Trait>::AccountId>> for EnumSet<T>[src]

type Query = Vec<T::AccountId>

The type that get/take returns.

type Hasher = Blake2_256

fn prefix() -> &'static [u8][src]

Get the prefix key in storage.

fn key_for(x: &T::AccountIndex) -> Vec<u8>[src]

Get the storage key used to fetch a value corresponding to a specific key.

fn get<S: HashedStorage<Blake2_256>>(
    key: &T::AccountIndex,
    storage: &S
) -> Self::Query
[src]

Load the value associated with the given key from the map.

fn take<S: HashedStorage<Blake2_256>>(
    key: &T::AccountIndex,
    storage: &mut S
) -> Self::Query
[src]

Take the value, reading and removing it.

fn mutate<R, F, S>(key: &T::AccountIndex, f: F, storage: &mut S) -> R where
    F: FnOnce(&mut Self::Query) -> R,
    S: HashedStorage<Blake2_256>, 
[src]

Mutate the value under a key

fn exists<S>(key: &K, storage: &S) -> bool where
    S: HashedStorage<Self::Hasher>, 
[src]

true if the value is defined in storage.

fn insert<S>(key: &K, val: &V, storage: &mut S) where
    S: HashedStorage<Self::Hasher>, 
[src]

Store a value to be associated with the given key from the map.

fn insert_ref<Arg, S>(key: &K, val: &Arg, storage: &mut S) where
    Arg: Encode + ?Sized,
    S: HashedStorage<Twox128>,
    V: AsRef<Arg>, 
[src]

Store a value under this key into the provided storage instance; this can take any reference type that derefs to T (and has Encode implemented). Store a value under this key into the provided storage instance. Read more

fn remove<S>(key: &K, storage: &mut S) where
    S: HashedStorage<Self::Hasher>, 
[src]

Remove the value under a key.

impl<T: Trait> AppendableStorageMap<<T as Trait>::AccountIndex, Vec<<T as Trait>::AccountId>> for EnumSet<T>[src]

fn append<S, I>(
    key: &K,
    items: &[I],
    storage: &mut S
) -> Result<(), &'static str> where
    I: Encode,
    S: HashedStorage<Self::Hasher>,
    V: EncodeAppend<Item = I>, 
[src]

Append the given items to the value in the storage. Read more

Auto Trait Implementations

impl<T> Unpin for EnumSet<T> where
    T: Unpin

impl<T> Sync for EnumSet<T> where
    T: Sync

impl<T> Send for EnumSet<T> where
    T: Send

impl<T> RefUnwindSafe for EnumSet<T> where
    T: RefUnwindSafe

impl<T> UnwindSafe for EnumSet<T> where
    T: UnwindSafe

Blanket Implementations

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<S, T> UncheckedInto<T> for S where
    T: UncheckedFrom<S>, 
[src]

impl<K, V, U> StorageMap<K, V> for U where
    K: Codec,
    U: StorageMap<K, V>,
    V: Codec
[src]

type Query = <U as StorageMap<K, V>>::Query

The type that get/take return.

impl<K, V, U> AppendableStorageMap<K, V> for U where
    K: Codec,
    U: AppendableStorageMap<K, V>,
    V: Codec
[src]

impl<T> Erased for T[src]

impl<T, S> UniqueSaturatedInto<T> for S where
    S: TryInto<T>,
    T: Bounded
[src]

impl<T> SaturatedConversion for T[src]

fn saturated_from<T>(t: T) -> Self where
    Self: UniqueSaturatedFrom<T>, 
[src]

Convert from a value of T into an equivalent instance of Self. Read more

fn saturated_into<T>(self) -> T where
    Self: UniqueSaturatedInto<T>, 
[src]

Consume self to return an equivalent value of T. Read more

impl<T> CheckedConversion for T[src]

fn checked_from<T>(t: T) -> Option<Self> where
    Self: TryFrom<T>, 
[src]

Convert from a value of T into an equivalent instance of Option<Self>. Read more

fn checked_into<T>(self) -> Option<T> where
    Self: TryInto<T>, 
[src]

Consume self to return Some equivalent value of Option<T>. Read more

impl<T> Same<T> for T[src]

type Output = T

Should always be Self