In common with many other languages, Ruby has a syntactic shortcut:
a=a+2 may be written as
a+=2.
The second form is converted internally to the first. This means that
operators that you have defined as methods in your own classes work as
you'd expect.
class Bowdlerize
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def initialize(aString)
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@value = aString.gsub(/[aeiou]/, '*')
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end
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def +(other)
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Bowdlerize.new(self.to_s + other.to_s)
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end
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def to_s
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@value
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end
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end
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a = Bowdlerize.new("damn ")
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� |
d*mn
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a += "shame"
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� |
d*mn sh*m*
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