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Comment by Mithaldu | Hacker News Reader

Shouldn't that be:

  Foo value = ( someCondition() ? map1 : map2 ).computeIfAbsent("key", defaultValueProvider);

Or some kind of moral equivalent?

Could be, though this is an artifact of a simplified example that I didn't mean to be relevant here.

For clarity, let's rewrite it as:

  Foo value = someCondition()
              ? map1.computeIfAbsent("key", defaultValueProvider)
              : list1.get(42);