Hello All!
I have a string:
str = "xxxy"
and a regular expression:
re=/y/
I know that if I do a gsub!, the variable that gets passed into the
block acts as the matched string in str; and I can do something to
this matched string; so:
str.gsub!(re){|s|
s.upcase
}
#=> "xxxY"
But what can I do to be able to manipulate the pre-match? is it the
$`? I tried
str.gsub!(re){|s|
$`.upcase
}
It wouldn't work.
Thank you for your help!
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