Ruby Regexp using gsub is there an equivalent to self keyword?
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String#gsub accepts an optional block. The return value of the block is used as a replacement string.
str.gsub(/[a-z]/) { |x| x.next }# => "bcd123"Shorter version using &:next syntax:
str.gsub(/[a-z]/, &:next)# => "bcd123" 0 0
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