Bug? Null comparison results in error

wonder · May 8, 2019

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:

B4X:

Dim A As Object  
Dim B As Map
B.Initialize
Log(A == B.GetDefault("KEY", Null)) 'Works
Log(B.GetDefault("KEY", Null) == A) 'Crashes

Erel · May 9, 2019

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

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