How do I compare two arrays in scala?

arrays scala pattern-matching
Phil H picture Phil H · Mar 22, 2011 · Viewed 39k times · Source 
val a: Array[Int] = Array(1,2,4,5)
val b: Array[Int] = Array(1,2,4,5)
a==b // false

Is there a pattern-matching way to see if two arrays (or sequences) are equivalent?

Answer

Moritz picture Moritz · Mar 22, 2011

You need to change your last line to

a.deep == b.deep

to do a deep comparison of the arrays.

Related questions

Appending an element to the end of a list in Scala

I can't add an element of type T into a list List[T]. I tried with myList ::= myElement but it seems it creates a strange object and accessing to myList.last always returns the first element that was put inside …

Read More
Scala: what is the best way to append an element to an Array?

Say I have an Array[Int] like val array = Array( 1, 2, 3 ) Now I would like to append an element to the array, say the value 4, as in the following example: val array2 = array + 4 // will not compile I can of course use …

Read More
Difference between Array and List in scala

In what cases I should use Array(Buffer) and List(Buffer). Only one difference that I know is that arrays are nonvariant and lists are covariant. But what about performance and some other characteristics?

Read More