Go 字符串统计

统计字符串每个字符出现次数！

package mainimport (    "fmt")func WordCount(s string) map[string]int {    var word string    m := make(map[string]int)    for i := 0; i < len(s); {        word = s[i : i+1]        fmt.Println(word)        v, ok := m[word]        if ok != false {            m[word] = v + 1        } else {            m[word] = 1        }        i += 1    }    return m}func main() {    var str = "stringsg"    fmt.Println(WordCount(str))}