Golang：要计算Go中某个字符串中一个或多个子字符串的出现？

Question

I know that for counting the occurrence of one substring I can use "strings.Count(, )". What if I want to count the number of occurrences of substring1 OR substring2? Is there a more elegant way than writing another new line with strings.count()?

Answer 1

Use a regular expression:

https://play.golang.org/p/xMsHIYKtkQ

aORb := regexp.MustCompile("A|B")

matches := aORb.FindAllStringIndex("A B C B A", -1)
fmt.Println(len(matches))