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Any abstraction leaks. Good abstractions do not leak for common use cases and provide necessary access to the internals for uncommon use cases.

• harry8 6y ago
  Which os is a good abstraction by this metric? Yes that's a leading question.
  • hakre 6y ago
    Which metric? Leaky abstractions is a "Law", not a metric. Are you looking for experience? [ see Wikipedia for contextual meaning of law here, https://en.wikipedia.org/wiki/Law_(principle) https://en.wikipedia.org/wiki/Law_(principle) ]
    • mishac 6y ago
      I think by "metric" he means your definition of a good abstraction, not the fact that all abstractions leak.
  • pcr910303 6y ago
    I consider the libraries of the languages that allow the programmers to do everything (e.g. Python or JavaScript) are good at this: The library authors signal that these functions should not be called and these can be, but ultimately if you’re monkeypatching or something you can really do this. Obj-C is also a good language in doing this too…