仅当两个以上的分组匹配时，如何使正则表达式匹配？

Question

How do I make quantifier only match if at least 2 of the grouped words are found?

I need this to match: ((?i:\bjack\b)|(?i:\bjill\b)|(?i:\bjohn\b)){2,}

And I need this to not match:

Match if >= 2 of the words are found, in any order and case

How do I go about doing that? After a few hrs I'm tired of reading regex. Thanks!

Answer 1

You could do:

re, _ := regexp.Compile(`\b(?i:jack|jill|john)\b`)
ma := re.FindAllString("Jill is friends with John. But Jack doesn't know.", -1)
if len(ma) < 2 //...then there aren't enough matches.

Alternatively, (\b(?i:jack|jill|john)\b.*){2,} does what you want, I think.