# Struct bitflags::__core::boxed::ExchangeHeapSingleton [−] [src]

    pub struct ExchangeHeapSingleton {
        // some fields omitted
    }

Unstable (`box_heap`)

: may be renamed; uncertain about custom allocator design

This the singleton type used solely for `boxed::HEAP`.

## Trait Implementations

### `impl<T> Placer<T> for ExchangeHeapSingleton`

#### `type Place = IntermediateBox<T>`

Unstable (`placement_in`)

: placement box design is still being worked out.

#### `fn make_place(self) -> IntermediateBox<T>`

Unstable (`placement_in`)

: placement box design is still being worked out.

### Derived Implementations

### `impl Clone for ExchangeHeapSingleton`

#### `fn clone(&self) -> ExchangeHeapSingleton`

Unstable (`box_heap`)

: may be renamed; uncertain about custom allocator design

#### `fn clone_from(&mut self, source: &Self)`1.0.0

### `impl Copy for ExchangeHeapSingleton`

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