On Sat, 27 Jan 2024 07:52:56 GMT, David Alayachew <d...@openjdk.org> wrote:
>> Adding a function to Objects in order to facilitate equality checking and >> enhance readability. You simply specify the 2 objects that you want to check >> for equality, and then provide the functions which will be used to provide >> the values that we will check for equality. > > David Alayachew has updated the pull request incrementally with one > additional commit since the last revision: > > Rather than reiterating the precondition, let's explain why the method > failed > If you want a simpler, straightforward approach in case your getters change > as often as the objects you compare, you can do: > > ```java > getters.stream().allMatch(g -> Objects.equals(g.apply(a), g.apply(b))); > ``` Oh, I did not see this when I clicked post. So, this solution is great if I want all the fields. But again, ad-hoc. I don't always want all the fields. I want the user to be able to choose, at use-site, which methods to use to perform equality checking on. Furthermore, not every method will be present in the class. What if I want to compare 2 objects for the length of their `String` field? I don't want to compare if the 2 are equal, but if the lengths of them are equal. ------------- PR Comment: https://git.openjdk.org/jdk/pull/17603#issuecomment-1913267350
