1. strings和strconv使用
b := strings.HasSuffix(str, "haha")
fmt.Println("結尾=>", b)
- strings.Index(s string, str string) int:判斷str在s中首次出現的位置,如果沒有出現,則傳回-1
c := strings.Index(str, "haha")
fmt.Println("包含=>", c)
- strings.LastIndex(s string, str string) int:判斷str在s中最後出現的位置,如果沒有出現,則傳回-1
d := strings.LastIndex(str, "haha")
fmt.Println("最後出現的位置=>", d)
- strings.Replace(str string, old string, new string, n int):字元串替換
e := strings.Replace(str, "haha", "123", )
fmt.Println("替換=>", e)
- strings.Count(str string, substr string)int:字元串計數
f := strings.Count(str, "ha")
fmt.Println("計數出現次數=>", f)
- strings.Repeat(str string, count int)string:重複count次str
g := strings.Repeat(str, )
fmt.Println("字元串加倍=>", g)
- strings.ToLower(str string)string:轉為小寫
h := strings.ToLower(str)
fmt.Println("轉小寫=>", h)
- strings.ToUpper(str string)string:轉為大寫
i :=strings.ToUpper(str)
fmt.Println("轉大寫=>", i)
- strings.TrimSpace(str string):去掉字元串首尾空白字元
j := strings.TrimSpace(str)
fmt.Println("去掉收尾空白字元串=>",j)
- strings.Trim(str string, cut string):去掉字元串首尾cut字元
k :=strings.Trim(str,"hua") //隻要前後在倆面就會處理
fmt.Println("去掉字元串前後=>",k)
- strings.TrimLeft(str string, cut string):去掉字元串首cut字元
l :=strings.TrimLeft(str,"hua")
fmt.Println("去掉字元串首=>",l)
- strings.TrimRight(str string, cut string):去掉字元串首cut字元
m :=strings.TrimRight(str,"hua")
fmt.Println("去掉字元串尾=>",m)
- strings.Field(str string):傳回str空格分隔的所有子串的slice
n :=strings.Fields(str)
fmt.Println("傳回str空格分隔的所有子串的slice=>",n)
- strings.Split(str string, split string):傳回str split分隔的所有子串的slice
o := strings.Split(str,"")
fmt.Println("split分隔的所有子串的slice=>",o)
- strings.Join(s1 []string, sep string):用sep把s1中的所有元素連結起來
s := []string{"jiqimao","kabuda",}
p := strings.Join(s,"")
fmt.Println(p,str)
- strconv.Itoa(i int):把一個整數i轉成字元串
fmt.Println(strconv.Itoa())
- strconv.Atoi(str string)(int, error):把一個字元串轉成整數
q,_ := strconv.Atoi("56")
fmt.Println(q)