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Bug? Null comparison results in error

Discussion in 'Bugs & wishlist' started by wonder, May 8, 2019.

  1. wonder

    wonder Expert Licensed User

    Comparing an object with Null (or null object) works, but comparing Null with an object doesn't work.


    Is this normal?

    Here's Python for comparison (no errors):

    It happens in both B4A and B4J.

    Another example:
    Dim A As Object  
    Dim B As Map
    Log(A == B.GetDefault("KEY"Null)) 'Works
    Log(B.GetDefault("KEY"Null) == A) 'Crashes
    Last edited: May 8, 2019
  2. Erel

    Erel Administrator Staff Member Licensed User

    This is expected as the = operator is not implemented as an identity comparison (with one exception, when the right side is the Null keyword).
    wonder likes this.
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