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Swift's approach to this is pretty good. Arguments have a fixed order, and whether or not they are named at the call-site is explicitly decided by the author of the function signature.

In practice the order and identity of the arguments is quite clear in Swift.

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As someone who kind of jumped into Swift coming from other languages, I still find this kind of stuff confusing.

Is there a good intro to Swift that goes through only what is unique/peculiar about Swift and explains that in a good way to someone that already knows how to program?

I don't know if you tried reading The Swift Programming Language book ( https://docs.swift.org/swift-book/LanguageGuide/TheBasics.ht... ). It's a fairly quick read and has brief explanations with simple examples. You can skip some sections if you have prior programming experience, but if you're confused about Swift's function arguments, you may want to skim even the basics since a few things like control flow (e.g. the switch statement) are unique compared to C/C++/Java/C#.

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