Created
January 11, 2012 14:37
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Weird RegExp
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| # Can anybody explain why this happens? | |
| name = "John Doe" | |
| name.gsub(/John/, "\\'") | |
| # " Doe Doe" |
Oh, great. I'd have had no idea.
I never would say \' meant something special… #nicetoknow
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The same way one can do
name.gsub(/J(o)hn/, "\\1")and haveJohnreplaced by the matcho, you can also do"\\'"and replace the match by the right side of the match in the string itself. This API is similar to Ruby's special variables$',$1for regexps (i.e.$'means the same as\\'). You can check what Ruby's special variables do here: http://www.zenspider.com/Languages/Ruby/QuickRef.html