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Fibonacci in Go
package main
import "fmt"
// fibonacci is a function that returns
// a function that returns an int.
func fibonacci() func() int {
x0, x1 := 0, 1
return func() (f int) {
f = x0 + x1
x0, x1 = x1, f
return
}
}
func main() {
f := fibonacci()
for i := 0; i < 10; i++ {
fmt.Println(f())
}
}
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