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Overriding Comparison Operators in Groovy

I would like to override the> = operator in Groovy, found this page , but I'm still not sure how to do it, I have a Banknote class with serial and quantity properties, and I want to implement comparison bases on the amount property.

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You are not overriding the operator >=

, you are implementing compareTo

:



class Foo implements Comparable {
  int val
  int compareTo(Object o) { return val <=> ((Foo) o).val }
}

f1 = new Foo(val: 5)
f2 = new Foo(val: 10)
println f1 <= f2
=> true
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