ruby 代码
- >> str2 = "Acapulca, Mexico"
- => "Acapulca, Mexico"
- >> sub2 = str2.scan(/(.)(c.)/)
- => [["A", "ca"], ["l", "ca"], ["i", "co"]]
- >> str1 = "abracaabra"
- => "abracaabra"
- >> sub1 = str1.scan(/a./)
- => ["ab", "ac", "aa"]
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