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| func main() { | |
| // The type of the greetingFn variable is func(string) error | |
| var greetingFn func(string) error = EnglishGreeting | |
| // The next line doesn't care what implementation of func(string) error is used | |
| if err := greetingFn("World"); err != nil { | |
| log.Fatal(err) | |
| } | |
| } |
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