@@ -294,8 +294,8 @@ public extension Future {
294294 /// :nodoc:
295295 @available ( * , deprecated, renamed: " flatMap " )
296296 func then< NewValue> (
297- on queue: DispatchQueue = . futures,
298- callback: @escaping ( _ value: Value ) -> Future < NewValue > ) -> Future < NewValue > {
297+ on queue: DispatchQueue = . futures,
298+ callback: @escaping ( _ value: Value ) -> Future < NewValue > ) -> Future < NewValue > {
299299 flatMap ( on: queue, callback: callback)
300300 }
301301
@@ -336,8 +336,8 @@ public extension Future {
336336 /// :nodoc:
337337 @available ( * , deprecated, renamed: " flatMapIfRejected " )
338338 func thenIfRejected(
339- on queue: DispatchQueue = . futures,
340- callback: @escaping ( Error ) -> Future < Value > ) -> Future < Value > {
339+ on queue: DispatchQueue = . futures,
340+ callback: @escaping ( Error ) -> Future < Value > ) -> Future < Value > {
341341 flatMapIfRejected ( on: queue, callback: callback)
342342 }
343343
@@ -366,8 +366,8 @@ public extension Future {
366366 /// :nodoc:
367367 @available ( * , deprecated, renamed: " flatMapThrowing " )
368368 func thenThrowing< NewValue> (
369- on queue: DispatchQueue = . futures,
370- callback: @escaping ( Value ) throws -> NewValue ) -> Future < NewValue > {
369+ on queue: DispatchQueue = . futures,
370+ callback: @escaping ( Value ) throws -> NewValue ) -> Future < NewValue > {
371371 flatMapThrowing ( on: queue, callback: callback)
372372 }
373373
@@ -440,6 +440,14 @@ public extension Future {
440440 func mapIfRejected( on queue: DispatchQueue = . futures, callback: @escaping ( Error ) -> Value ) -> Future < Value > {
441441 return recover ( on: queue, callback: callback)
442442 }
443+
444+ func print( on queue: DispatchQueue = . futures) -> Future < Value > {
445+ whenFulfilled { value in
446+ Swift . print ( value)
447+ }
448+
449+ return self
450+ }
443451}
444452
445453public extension Future {
@@ -492,11 +500,11 @@ public extension Future {
492500 with combiningFunction: @escaping ( Value , NewValue ) -> Future < Value > ) -> Future < Value >
493501 where S. Element == Future < NewValue > {
494502
495- return futures. reduce ( self ) { future1, future2 in
496- return future1. and ( future2, on: queue) . flatMap ( on: queue) { value1, value2 in
497- return combiningFunction ( value1, value2)
503+ return futures. reduce ( self ) { future1, future2 in
504+ return future1. and ( future2, on: queue) . flatMap ( on: queue) { value1, value2 in
505+ return combiningFunction ( value1, value2)
506+ }
498507 }
499- }
500508 }
501509
502510 /// Returns a new `Future<Value>` that fires only when all the provided `Future<NewValue>`s have been resolved.
@@ -521,11 +529,11 @@ public extension Future {
521529 nextPartialResult: @escaping ( Value , NewValue ) -> Value ) -> Future < Value >
522530 where S. Element == Future < NewValue > {
523531
524- let initialResult = Future < Value > ( fulfilledWith: initialResult)
532+ let initialResult = Future < Value > ( fulfilledWith: initialResult)
525533
526- return initialResult. fold ( futures, on: queue) { value1, value2 in
527- return Future ( fulfilledWith: nextPartialResult ( value1, value2) )
528- }
534+ return initialResult. fold ( futures, on: queue) { value1, value2 in
535+ return Future ( fulfilledWith: nextPartialResult ( value1, value2) )
536+ }
529537 }
530538
531539 /// Returns a new `Future<Value>` that will resolve with result of this `Future` **after**
@@ -599,18 +607,9 @@ public extension Future {
599607 /// - Returns: A future that will receive the eventual value.
600608 @discardableResult
601609 func discard( on queue: DispatchQueue = . futures) -> Future < Void > {
602-
603- let promise = Promise < Void > ( )
604-
605- whenFulfilled ( on: queue) { _ in
606- promise. fulfill ( )
607- }
608-
609- whenRejected { error in
610- promise. reject ( error)
610+ map ( on: queue) { _ in
611+ return ( )
611612 }
612-
613- return promise. future
614613 }
615614}
616615
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