Display the source code in dmd/root/optional.d from which thispage was generated on github.

If you spot a problem with this page, click here to create aBugzilla issue.

Quickly fork, edit online, and submit a pull request for this page.Requires a signed-in GitHub account. This works well for small changes.If you'd like to make larger changes you may want to consider usinglocal clone.

Struct `dmd.root.optional.Optional`

Optional type that is either empty or contains a value of type T


						
				struct Optional(T);

Constructors

Name	Description
`this` (value)	Creates an `Optional` with the given value

Fields

Name	Type	Description
`present`	`bool`	whether `value` is set
`value`	`T`	the value (if present)

Methods

Name	Description
`create` (val)	Creates an `Optional` with the given value
`get` ()
`hasValue` ()
`isEmpty` ()
`isPresent` ()

Authors

Walter Bright

License

Boost License 1.0