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Backpressure is an advanced topic and as Apple keeps their implementations of publishers and subscribers private, the complexity of this management is hidden from developers. Understanding the principle of backpressure makes customization for publishers and subscribers possible. One particular use case for this is CombineCocoa by CombineCommunity, which makes integration of Combine when using UIControls much more convenient. However, Apple strongly encourages that developers use the built-in convenience publishers and subjects instead of implementing custom ones, so it is important to look for simple solutions before tempting to overengineer to avoid bringing complexity and potential bugs to your projects.
Since Combine only supports iOS 13 onwards, it may be a bit early for most of current projects to adopt. Nevertheless, it’s never too soon to learn new tech and start experimenting with it to get yourself comfortable and “relevant”. The framework itself is still under development and improvement, so don’t forget to check back in future WWDCs for any cool new updates. I hope this article inspires you to dive deeper and learn more about Combine. I would like to give my thanks to Donny Wals for his book Practical Combine, as well as all the resources listed in the References section for making this article possible. In the meantime, you can also check out RxCombine to discover the possiblities of bridging between the two frameworks. Have fun!
CombineCommunity/rxswift-to-combine-cheatsheet
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