Struct solana_sdk::sysvar::stake_history::StakeHistory[][src]

#[repr(C)]pub struct StakeHistory(_);

Implementations

impl StakeHistory[src]

pub fn get(&self, epoch: &u64) -> Option<&StakeHistoryEntry>[src]

pub fn add(&mut self, epoch: u64, entry: StakeHistoryEntry)[src]

Methods from Deref<Target = Vec<(u64, StakeHistoryEntry), Global>>

pub fn capacity(&self) -> usize1.0.0[src]

Returns the number of elements the vector can hold without reallocating.

Examples

let vec: Vec<i32> = Vec::with_capacity(10);
assert_eq!(vec.capacity(), 10);

pub fn as_slice(&self) -> &[T]1.7.0[src]

Extracts a slice containing the entire vector.

Equivalent to &s[..].

Examples

use std::io::{self, Write};
let buffer = vec![1, 2, 3, 5, 8];
io::sink().write(buffer.as_slice()).unwrap();

pub fn as_ptr(&self) -> *const T1.37.0[src]

Returns a raw pointer to the vector’s buffer.

The caller must ensure that the vector outlives the pointer this function returns, or else it will end up pointing to garbage. Modifying the vector may cause its buffer to be reallocated, which would also make any pointers to it invalid.

The caller must also ensure that the memory the pointer (non-transitively) points to is never written to (except inside an UnsafeCell) using this pointer or any pointer derived from it. If you need to mutate the contents of the slice, use as_mut_ptr.

Examples

let x = vec![1, 2, 4];
let x_ptr = x.as_ptr();

unsafe {
    for i in 0..x.len() {
        assert_eq!(*x_ptr.add(i), 1 << i);
    }
}

pub fn allocator(&self) -> &A[src]

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

Returns a reference to the underlying allocator.

pub fn len(&self) -> usize1.0.0[src]

Returns the number of elements in the vector, also referred to as its ‘length’.

Examples

let a = vec![1, 2, 3];
assert_eq!(a.len(), 3);

pub fn is_empty(&self) -> bool1.0.0[src]

Returns true if the vector contains no elements.

Examples

let mut v = Vec::new();
assert!(v.is_empty());

v.push(1);
assert!(!v.is_empty());

Trait Implementations

impl Clone for StakeHistory[src]

impl Debug for StakeHistory[src]

impl Default for StakeHistory[src]

impl Deref for StakeHistory[src]

type Target = Vec<(u64, StakeHistoryEntry), Global>

The resulting type after dereferencing.

impl<'de> Deserialize<'de> for StakeHistory[src]

impl Eq for StakeHistory[src]

impl PartialEq<StakeHistory> for StakeHistory[src]

impl Serialize for StakeHistory[src]

impl StructuralEq for StakeHistory[src]

impl StructuralPartialEq for StakeHistory[src]

impl Sysvar for StakeHistory[src]

impl SysvarId for StakeHistory[src]

Auto Trait Implementations

impl RefUnwindSafe for StakeHistory

impl Send for StakeHistory

impl Sync for StakeHistory

impl Unpin for StakeHistory

impl UnwindSafe for StakeHistory

Blanket Implementations

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

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

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

impl<T> DeserializeOwned for T where
    T: for<'de> Deserialize<'de>, 
[src]

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

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

impl<T> MaybeDebug for T where
    T: Debug
[src]

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

type Output = T

Should always be Self

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T

The resulting type after obtaining ownership.

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> Typeable for T where
    T: Any

impl<V, T> VZip<V> for T where
    V: MultiLane<T>, 
[src]