https://blog.youkuaiyun.com/lanourleezh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/lanourlee/article/details/8762652https://blog.youkuaiyun.com/lanourlee/article/details/8762652lanourleeFri, 05 Apr 2013 21:53:06 +0800 integer   2.判断字符串中是否包含另一个串 str.include? other_str => true or false "hello".include? "lo" #=> true "hello".include? "ol" #=> false "hello".include? ?h #=> true   3.字符串]]>https://blog.youkuaiyun.com/lanourlee/article/details/8762194https://blog.youkuaiyun.com/lanourlee/article/details/8762194lanourleeFri, 05 Apr 2013 19:41:20 +0800 Downloads.]]>