3 ms·

You can do the same with statics in Java

• kelnos 4y ago
  Not with that syntax. That syntax declares 'bar' as an instance variable. and 'foo' there is a null pointer, so trying to dereference it like that should produce a NullPointerException. Sure, you could change the declaration of 'bar' to include 'static', and change the access of 'bar' from 'foo.bar' to 'Foo.bar', but... that's not what the code says.
  • twic 4y ago
    I think you can do the same in C++, or at least something very similar. If a method isn't virtual and doesn't touch the object's fields, you can invoke it on null quite happily. Doesn't Go do this too?
    • panzi 4y ago
      Yeah, but it is a field, not a method.
    • jenadine 4y ago
      I'm pretty sure that would be an "Undefined Behaviour" in C++. And you can make lots of "Wat" moments by invoking UB.