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update error of describe. (#445)
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@@ -17,7 +17,7 @@ Greeting("hello:", "Joe", "Anna", "Eileen")
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在 Greeting 函数中,变量 `who` 的值为 `[]string{"Joe", "Anna", "Eileen"}`。
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如果参数被存储在一个数组 `arr` 中,则可以通过 `arr...` 的形式来传递参数调用变参函数。
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如果参数被存储在一个 slice 类型的变量 `slice` 中,则可以通过 `slice...` 的形式来传递参数调用变参函数。
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示例 6.7 [varnumpar.go](examples/chapter_6/varnumpar.go)
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@@ -29,17 +29,17 @@ import "fmt"
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func main() {
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x := min(1, 3, 2, 0)
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fmt.Printf("The minimum is: %d\n", x)
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arr := []int{7,9,3,5,1}
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x = min(arr...)
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fmt.Printf("The minimum in the array arr is: %d", x)
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slice := []int{7,9,3,5,1}
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x = min(slice...)
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fmt.Printf("The minimum in the slice is: %d", x)
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}
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func min(a ...int) int {
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if len(a)==0 {
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func min(s ...int) int {
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if len(s)==0 {
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return 0
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}
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min := a[0]
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for _, v := range a {
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min := s[0]
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for _, v := range s {
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if v < min {
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min = v
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}
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@@ -51,7 +51,7 @@ func min(a ...int) int {
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输出:
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The minimum is: 0
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The minimum in the array arr is: 1
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The minimum in the slice is: 1
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**练习 6.3** varargs.go
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@@ -109,4 +109,4 @@ func F3(s []string) { }
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- [目录](directory.md)
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- 上一节:[函数参数与返回值](06.2.md)
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- 下一节:[defer 和追踪](06.4.md)
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- 下一节:[defer 和追踪](06.4.md)
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@@ -5,17 +5,17 @@ import "fmt"
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func main() {
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x := Min(1, 3, 2, 0)
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fmt.Printf("The minimum is: %d\n", x)
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arr := []int{7, 9, 3, 5, 1}
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x = Min(arr...)
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fmt.Printf("The minimum in the array arr is: %d", x)
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slice := []int{7, 9, 3, 5, 1}
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x = Min(slice...)
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fmt.Printf("The minimum in the slice is: %d", x)
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}
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func Min(a ...int) int {
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if len(a) == 0 {
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func Min(s ...int) int {
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if len(s) == 0 {
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return 0
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}
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min := a[0]
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for _, v := range a {
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min := s[0]
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for _, v := range s {
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if v < min {
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min = v
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}
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@@ -25,5 +25,5 @@ func Min(a ...int) int {
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/*
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The minimum is: 0
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The minimum in the array arr is: 1
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The minimum in the slice is: 1
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*/
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