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Instance Method

flatten(_:)

Returns a new EventLoopFuture that succeeds only when all the provided futures succeed, ignoring the resolved values.
func flatten(_ futures: [EventLoopFuture<Void>]) -> EventLoopFuture<Void>

Parameters

futures

An array of futures to wait for.

Return Value

A new EventLoopFuture.

Discussion

The returned EventLoopFuture will fail if any of the provided futures fails. All remaining EventLoopFuture objects will be ignored.

See Also

EventLoop and EventLoopGroup

  • flatten(_:)
    Returns a new EventLoopFuture that succeeds only when all the provided futures succeed. The new EventLoopFuture contains an array of results, maintaining same ordering as the futures.
  • future()
    Creates a new, succeeded EventLoopFuture from the worker’s event loop with a Void value.
  • future(error:)
    Creates a new, failed EventLoopFuture from the worker’s event loop.
  • future(_:)
    Creates a new, succeeded EventLoopFuture from the worker’s event loop.
  • future(result:)
    Creates a new Future from the worker’s event loop, succeeded or failed based on the input Result.
  • tryFuture(_:)
    An alternate name for this would be future(catching:), but with that name, trailing closure syntax just looks like el.future { ... }, which does not indicate to readers of the code that it is the error-capturing version. Since such an indication is highly desirable, a slightly less idiomatic name is used instead.