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  1. interface BinaryOp<T> {
  2.   public T apply(T x, T y);
  3. }
  4.  
  5. enum BinOps implements BinaryOp<Double> {
  6.   Add {
  7.     public Double apply(Double x, Double y) { return x + y; }
  8.   },
  9.   Sub {
  10.     public Double apply(Double x, Double y) { return x - y; }
  11.   },
  12.   Mult {
  13.     public Double apply(Double x, Double y) { return x * y; }
  14.   },
  15.   Div {
  16.     public Double apply(Double x, Double y) { return x / y; }
  17.   }
  18. }
  19.  
  20. class Main {
  21.   public static void main(String... args) {
  22.     for (BinaryOp<Double> op: BinOps.values()) {
  23.       System.out.println(op.apply(3.14159265358979, 100500.0));
  24.     }
  25.   }
  26. }
Success #stdin #stdout 0.03s 245632KB
comments (?)
stdin 
Standard input is empty
stdout 
100503.14159265358
-100496.85840734642
315730.0616857739
3.1259628393928255E-5
https://ideone.com/tHfxh
language:
Java (HotSpot 12)
created:
14 years ago
visibility:
public

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