# Trait ethcore_util::standard::HeapSizeOf [−]

    pub trait HeapSizeOf {
        fn heap_size_of_children(&self) -> usize;
    }

## Required Methods

### `fn heap_size_of_children(&self) -> usize`

Measure the size of any heap-allocated structures that hang off this value, but not the space taken up by the value itself (i.e. what size_of::<T> measures, more or less); that space is handled by the implementation of HeapSizeOf for Box<T> below.

## Implementors

- `impl HeapSizeOf for U128`
- `impl HeapSizeOf for U256`
- `impl<T> HeapSizeOf for Box<T> where T: HeapSizeOf + ?Sized`
- `impl<T> HeapSizeOf for [T] where T: HeapSizeOf`
- `impl HeapSizeOf for String`
- `impl<'a, T> HeapSizeOf for &'a T where T: ?Sized`
- `impl<T> HeapSizeOf for Option<T> where T: HeapSizeOf`
- `impl<T, E> HeapSizeOf for Result<T, E> where E: HeapSizeOf, T: HeapSizeOf`
- `impl<'a, B> HeapSizeOf for Cow<'a, B> where B: ToOwned + ?Sized, B::Owned: HeapSizeOf`
- `impl HeapSizeOf for ()`
- `impl<T1, T2> HeapSizeOf for (T1, T2) where T1: HeapSizeOf, T2: HeapSizeOf`
- `impl<T1, T2, T3> HeapSizeOf for (T1, T2, T3) where T1: HeapSizeOf, T2: HeapSizeOf, T3: HeapSizeOf`
- `impl<T1, T2, T3, T4> HeapSizeOf for (T1, T2, T3, T4) where T1: HeapSizeOf, T2: HeapSizeOf, T3: HeapSizeOf, T4: HeapSizeOf`
- `impl<T1, T2, T3, T4, T5> HeapSizeOf for (T1, T2, T3, T4, T5) where T1: HeapSizeOf, T2: HeapSizeOf, T3: HeapSizeOf, T4: HeapSizeOf, T5: HeapSizeOf`
- `impl<T> HeapSizeOf for Arc<T> where T: HeapSizeOf`
- `impl<T> HeapSizeOf for RefCell<T> where T: HeapSizeOf`
- `impl<T> HeapSizeOf for Cell<T> where T: Copy + HeapSizeOf`
- `impl<T> HeapSizeOf for Vec<T> where T: HeapSizeOf`
- `impl<T> HeapSizeOf for VecDeque<T> where T: HeapSizeOf`
- `impl<T> HeapSizeOf for Vec<Rc<T>>`
- `impl<T, S> HeapSizeOf for HashSet<T, S> where S: BuildHasher, T: HeapSizeOf + Eq + Hash`
- `impl<K, V, S> HeapSizeOf for HashMap<K, V, S> where K: HeapSizeOf + Eq + Hash, S: BuildHasher, V: HeapSizeOf`
- `impl<T> HeapSizeOf for PhantomData<T>`
- `impl<T> HeapSizeOf for LinkedList<T> where T: HeapSizeOf`
- `impl<K, V> HeapSizeOf for BTreeMap<K, V> where K: HeapSizeOf, V: HeapSizeOf`
- `impl HeapSizeOf for char`
- `impl HeapSizeOf for str`
- `impl HeapSizeOf for u8`
- `impl HeapSizeOf for u16`
- `impl HeapSizeOf for u32`
- `impl HeapSizeOf for u64`
- `impl HeapSizeOf for usize`
- `impl HeapSizeOf for i8`
- `impl HeapSizeOf for i16`
- `impl HeapSizeOf for i32`
- `impl HeapSizeOf for i64`
- `impl HeapSizeOf for isize`
- `impl HeapSizeOf for bool`
- `impl HeapSizeOf for f32`
- `impl HeapSizeOf for f64`
- `impl HeapSizeOf for AtomicBool`
- `impl HeapSizeOf for AtomicIsize`
- `impl HeapSizeOf for AtomicUsize`
- `impl HeapSizeOf for Ipv4Addr`
- `impl HeapSizeOf for Ipv6Addr`
- `impl HeapSizeOf for H32`
- `impl HeapSizeOf for H64`
- `impl HeapSizeOf for H128`
- `impl HeapSizeOf for H160`
- `impl HeapSizeOf for H256`
- `impl HeapSizeOf for H264`
- `impl HeapSizeOf for H512`
- `impl HeapSizeOf for H520`
- `impl HeapSizeOf for H1024`
- `impl HeapSizeOf for H2048`
- `impl<T> HeapSizeOf for ElasticArray2<T> where T: HeapSizeOf`
- `impl<T> HeapSizeOf for ElasticArray4<T> where T: HeapSizeOf`
- `impl<T> HeapSizeOf for ElasticArray8<T> where T: HeapSizeOf`
- `impl<T> HeapSizeOf for ElasticArray16<T> where T: HeapSizeOf`
- `impl<T> HeapSizeOf for ElasticArray32<T> where T: HeapSizeOf`
- `impl<T> HeapSizeOf for ElasticArray36<T> where T: HeapSizeOf`
- `impl<T> HeapSizeOf for ElasticArray64<T> where T: HeapSizeOf`
- `impl<T> HeapSizeOf for ElasticArray128<T> where T: HeapSizeOf`
- `impl<T> HeapSizeOf for ElasticArray256<T> where T: HeapSizeOf`
- `impl<T> HeapSizeOf for ElasticArray512<T> where T: HeapSizeOf`
- `impl<T> HeapSizeOf for ElasticArray1024<T> where T: HeapSizeOf`
- `impl<T> HeapSizeOf for ElasticArray2048<T> where T: HeapSizeOf`

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