ruby - 在 ruby​​ 中使用 RegEx 查找子字符串

Question

'Open Source man Is Pretty Brilliant'.match(/ ./)

'Open source man Is Pretty Brilliant'.match(/ ./, 9)

我正在关注这个：http ://rubymonk.com/learning/books/1-ruby-primer/chapters/5-strings/lessons/8-string-advanced

有人可以解释一下吗，我无法理解。

谢谢你。

Answer 1

和尚清楚地说

When the second parameter is present, it specifies the position 
in the string to begin the search.

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更新

'Open Source man Is Pretty Brilliant'.match(/ ./) #=> only one parameter
'Open Source man Is Pretty Brilliant'.match(/ ./, 9) #=> 9 is the second parameter.

大师说：

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Outside this there is no Ruby, there is no Java"