60 lines
1.3 KiB
Go
60 lines
1.3 KiB
Go
package main
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import (
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"fmt"
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"unicode/utf8"
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)
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func main() {
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array := []string{"a", "b", "c", "d", "e"}
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fmt.Println(array)
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for i := 0; i < len(array); i++ {
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fmt.Printf("数组索引: %d，对应值: %s\n", i, array[i])
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}
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for i, v := range array {
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fmt.Printf("数组索引: %d, 对应值: %s\n", i, v)
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}
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for _, v := range array {
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fmt.Printf("数组值: %s\n", v)
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}
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// 切片slice
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slice := array[2:4] // 包含索引2，不包含索引4
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fmt.Println(slice)
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slice1 := make([]string, 4)
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slice2 := make([]string, 4, 8)
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slice2 = append(slice1, "f")
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fmt.Println(slice2)
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// 映射map
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nameAgeMap := make(map[string]int)
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nameAgeMap["Snowfay"] = 20
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fmt.Println(nameAgeMap)
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age := nameAgeMap["Snowfay"]
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fmt.Println(age)
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age, ok := nameAgeMap["Snowfay"]
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if ok {
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fmt.Println(age)
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} else {
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fmt.Println(ok)
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}
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nameAgeMap["飞雪无情"] = 50
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fmt.Println(nameAgeMap)
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delete(nameAgeMap, "飞雪无情")
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fmt.Println(nameAgeMap)
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nameAgeMap["Hello"] = 22
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nameAgeMap["Allen"] = 33
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for k, v := range nameAgeMap {
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fmt.Println("Key is", k, "Value is", v)
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}
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fmt.Println(len(nameAgeMap))
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// string
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s := "Hello飞雪无情"
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bs := []byte(s)
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fmt.Println(bs)
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fmt.Println(s[0], s[1], s[15])
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fmt.Println(len(s))
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fmt.Println(utf8.RuneCountInString(s))
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for i, r := range s {
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fmt.Printf("%d %c\n", i, r)
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}
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}
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