# Enum futures::Async [−] [src]

    pub enum Async<T> {
        Ready(T),
        NotReady,
    }

Return type of future, indicating whether a value is ready or not.

## Variants

`Ready(T)`

Represents that a value is immediately ready.

`NotReady`

Represents that a value is not ready yet, but may be so later.

## Methods

### `impl<T> Async<T>`
[src]

#### `pub fn map<F, U>(self, f: F) -> Async<U> where
F: FnOnce(T) -> U,`
[src]

Change the success value of this `Async` with the closure provided

#### `pub fn is_ready(&self) -> bool`
[src]

Returns whether this is `Async::Ready`

#### `pub fn is_not_ready(&self) -> bool`
[src]

Returns whether this is `Async::NotReady`

## Trait Implementations

### `impl<T: Copy> Copy for Async<T>`
[src]

### `impl<T: Clone> Clone for Async<T>`
[src]

#### `fn clone(&self) -> Async<T>`
[src]

Returns a copy of the value. Read more

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

Performs copy-assignment from `source`. Read more

### `impl<T: Debug> Debug for Async<T>`
[src]

#### `fn fmt(&self, __arg_0: &mut Formatter) -> Result`
[src]

Formats the value using the given formatter. Read more

### `impl<T: PartialEq> PartialEq for Async<T>`
[src]

#### `fn eq(&self, __arg_0: &Async<T>) -> bool`
[src]

This method tests for `self` and `other` values to be equal, and is used by `==`. Read more

#### `fn ne(&self, __arg_0: &Async<T>) -> bool`
[src]

This method tests for `!=`.

### `impl<T> From<T> for Async<T>`
[src]

#### `fn from(t: T) -> Async<T>`
[src]

Performs the conversion.

# 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`)