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需要帮助来匹配字符串中的所有模式。
s1 = " countries like US, Japan, Korea, Vietnam, Germany"
s2 = " countries like Holland, China, Korea, Thailand, UK"
从上面的字符串需要匹配特定的亚洲国家
regex = /(Japan)|(Korea)|(Vietnam)|(Cambodia)|(China)|(Thailand)/
irb(main):157:0> s1.match(regex)
=> #<MatchData "Japan" 1:"Japan" 2:nil 3:nil 4:nil>
有没有办法得到下面的输出？
s1.some_regex_operation # => Japan, Korea, Vietnam
s2.some_regex_operation # => China, Korea, Thailand
最佳答案
使用String#scan :
s1 = " countries like US, Japan, Korea, Vietnam, Germany"
s2 = " countries like Holland, China, Korea, Thailand, UK"
s1.scan(/Japan|Korea|Vietnam|Cambodia|China|Thailand/)
# => ["Japan", "Korea", "Vietnam"]
s2.scan(/Japan|Korea|Vietnam|Cambodia|China|Thailand/)
# => ["China", "Korea", "Thailand"]
关于Ruby - 匹配字符串中的所有模式，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22003531/