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== for immutables should recursively call == on its fields

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#4,648 opened on 2013年10月26日

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breakingequalityhelp wantedneeds decision

説明

This doesn't make much sense:

julia> immutable Foo{T}
         bar::T
       end

julia> Foo("baz") == Foo("baz")
false

julia> Foo("baz").bar == Foo("baz").bar
true

julia> Foo(1) == Foo(1)
true

If the fields are == to each other then the objects should be == to each other.

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