{"Action":"pass","Test":"ExampleIndex"}
{"Action":"run","Test":"ExampleIndexFunc"}
{"Action":"output","Test":"ExampleIndexFunc","Output":"=== RUN   ExampleIndexFunc\n"}
{"Action":"output","Test":"ExampleIndexFunc","Output":"--- PASS: ExampleIndexFunc (0.00s)\n"}
{"Action":"pass","Test":"ExampleIndexFunc"}
{"Action":"run","Test":"ExampleIndexAny"}

	// true
}

func ExampleIndex() {
	numbers := []int{0, 42, 8}
	fmt.Println(slices.Index(numbers, 8))
	fmt.Println(slices.Index(numbers, 7))
	// Output:
	// 2
	// -1
}

func ExampleIndexFunc() {
	numbers := []int{0, 42, -10, 8}
	i := slices.IndexFunc(numbers, func(n int) bool {
		return n < 0
	})
	fmt.Println("First negative at index", i)
	// Output:
	// First negative at index 2
}

	// false
	// true
}

func ExampleIndex() {
	fmt.Println(strings.Index("chicken", "ken"))
	fmt.Println(strings.Index("chicken", "dmr"))
	// Output:
	// 4
	// -1
}

func ExampleIndexFunc() {
	f := func(c rune) bool {
		return unicode.Is(unicode.Han, c)
	}
	fmt.Println(strings.IndexFunc("Hello, 世界", f))
	fmt.Println(strings.IndexFunc("Hello, world", f))
	// Output:
	// 7
	// -1
}