juan_gandhi | Entries tagged with null

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Reload page in style: light

  @Test public void null_is_null() {
    Double Null = ((Double)null);
    boolean itis = Null instanceof Double;
    assertTrue(itis);
  }

Comments? I'm pretty much lost here.

scala> class A[T] { var x:T = _ }
defined class A

scala> val aInt = new A[Int]
aInt: A[Int] = A@36f6e879

scala> aInt.x
res2: Int = 0

  Until you take a closer look:

scala> class A[T] { var x:T = _; println(x) }
defined class A

scala> val aInt = new A[Int]
null
aInt: A[Int] = A@3fee9989

scala> aInt.x
res3: Int = 0

null magically turns into 0.