A Quirk Regarding Type Assertions and Switch Statements in Go

UpdatedMarch 14, 2024

I'm just a guy who loves to learn learn learn! I'm a big fan of minimalist sensibilities, including my coding environment. No need to make things complicated - less is often more.

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package main import "fmt" type Color struct { name string } type Join interface { Mix(o Color) } type Combine interface { Mix(o Color) } func (c *Color) Mix(otherColor Color) { fmt.Printf("%v mixed with %v = %v-%v!", c, otherColor, c, otherColor) } func main() { var blue Combine = &Color{"blue"} switch v := blue.(type) { case Join: fmt.Printf("%v is a Join.", v) case Combine: fmt.Printf("%v is a Combine.", v) } }

func main() { var blue Combine = &Color{"blue"} switch v := blue.(type) { case Join: fmt.Printf("%v is a Join.", v) case Combine: fmt.Printf("%v is a Combine.", v) } }

Command Palette

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