# Type Definition futures::Poll [−] [src]

    type Poll<T, E> = Result<Async<T>, E>;

Return type of the `Future::poll` method, indicates whether a future's value is ready or not.

- `Ok(Async::Ready(t))` means that a future has successfully resolved
- `Ok(Async::NotReady)` means that a future is not ready to complete yet
- `Err(e)` means that a future has completed with the given failure

# Help

## Keyboard Shortcuts

`?`
  Show this help dialog
`S`
  Focus the search field
`↑`
  Move up in search results
`↓`
  Move down in search results
`↹`
  Switch tab
`⏎`
  Go to active search result
`+`
  Expand all sections
`-`
  Collapse all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g. `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g. `vec -> usize` or `* -> vec`)