swiftui - an instance calls a static method? - Stack Overflow

The following SwiftUI code works in Swift Playgrounds:

Circle()
    .fill(.blue.shadow(.drop(radius: 10)))

but I can't figure out why it really works, here are my questions:

1. .blue is an instance of type Color, right?
2. why can it call the ShapeStyle.shadow() method, isn't it a static method?

I have chatted with ChatGPT, Gemini, Claude, Perplexity, but no one can give me a reasonable explanation, please help.

The following SwiftUI code works in Swift Playgrounds:

Circle()
    .fill(.blue.shadow(.drop(radius: 10)))

but I can't figure out why it really works, here are my questions:

1. .blue is an instance of type Color, right?
2. why can it call the ShapeStyle.shadow() method, isn't it a static method?

I have chatted with ChatGPT, Gemini, Claude, Perplexity, but no one can give me a reasonable explanation, please help.

• swiftui

Share Improve this question Follow asked Jan 2 at 21:54 Pegasus RoePegasus Roe 1922 bronze badges 2

• 2 It's an instance method, not a static function. See shadow(_:) – Benzy Neez Commented Jan 2 at 22:03
• Thanks a lot, I thought there was just a static shadow(_:) method. – Pegasus Roe Commented Jan 3 at 0:19

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Thanks to @BenzyNeez, now I know there are TWO .shadow() methods in ShapeStyle:

• type method: .shadow()
• instance method: .shadow()