# Publishers.MergeMany A publisher created by applying the merge function to an arbitrary number of upstream publishers. ``` struct MergeMany where Upstream : Publisher ``` ## Topics ### Creating a merge many publisher [`init(_:)`](/documentation/Combine/Publishers/MergeMany/init(_:)-1hsqd) Creates a publisher created by applying the merge function to an arbitrary number of upstream publishers. [`init(_:)`](/documentation/Combine/Publishers/MergeMany/init(_:)-3hrmo) Creates a publisher created by applying the merge function to a sequence of upstream publishers. ### Merging elements [`merge(with:)`](/documentation/Combine/Publishers/MergeMany/merge(with:)) Combines elements from this publisher with those from another publisher of the same type, delivering an interleaved sequence of elements. ### Declaring supporting types [`Publishers.MergeMany.Output`](/documentation/Combine/Publishers/MergeMany/Output) The kind of values published by this publisher. [`Publishers.MergeMany.Failure`](/documentation/Combine/Publishers/MergeMany/Failure) The kind of errors this publisher might publish. ### Inspecting publisher properties [`publishers`](/documentation/Combine/Publishers/MergeMany/publishers) The array of upstream publishers that this publisher merges together. ### Comparing publishers [`==(_:_:)`](/documentation/Combine/Publishers/MergeMany/==(_:_:)) Returns a Boolean value that indicates whether two publishers are equivalent. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)