'John Merlino' via Ruby on Rails: Talk wrote in post #1155178:
> I thought the ? matches zero or one occurrence of a pattern. However in
> this example:
>
> def show_regexp(string, pattern)
> match = pattern.match(string)
> if match
> "#{match.pre_match}->#{match[0]}<-#{match.post_match}"
> else
> "no match"
> end
> end
>
> a = "The moon is made of cheese"
> show_regexp(a, /\s.*?\s/) #=> The-> moon <-is made of cheese
>
> What exactly is the ? doing?
*? -- 0 or more, lazy. Matches will be as small as possible.
/\s.*\s/.match(searchText) (not lazy)
/\s.*?\s/.match(searchText) (lazy)
/\s.*\s/ (not lazy)
The-> moon is made of <-cheese (1 match)
/\s.*?\s/ (lazy)
=> The-> moon <-is-> made <-of cheese (2 matches)
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