Scala Semantic Equality

Asked Jul 01 '20 at 05:23

Active Jul 01 '20 at 05:23

Viewed 31 times

I have this code:

case class BooleanArr( a1: Array[Boolean] )

val ba1 = BooleanArr(Array(true,false))
val ba2 = BooleanArr(Array(true,false))
println(ba1 == ba2)

This prints false, of course. How can I test equality so that it is true? I mean--I know that these are two different instances in memory so they're not "equal" (the same), but I want a way to see that they're "equal" (having same values). Is that possible without a field-by-field hand-coded check?

(Oddly... I learned this works as I'd wish if I use List instead of Arrays... but my use case requires Array, unfortunately.)

asked Jul 01 '20 at 05:23

Greg

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See linked answer about using `sameElements` to compare `Array` for equality. – Tim Jul 01 '20 at 05:44
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I guess he is looking for class equality not array, an array is just a part of that case class so the concept is important – Nitesh Sharma Jul 01 '20 at 05:45
Why do you need **Arrays** instead of **Lists** or **ArraySeqs** or any other real collection? – Luis Miguel Mejía Suárez Jul 01 '20 at 16:12

Scala Semantic Equality

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