how to assign array values to individual int variables using scala

Question

I am trying achieve the below in scala

var date="12/01/2021"
var a,b,c = date.split("/")
print(a,b,c)

//expected result 
12,01,2021

Seth Tisue · Accepted Answer · 2022-03-05 15:03:06Z

2

There's no way you know for sure the size of the array after splitting, which is why you cannot destructure it like this.

However you can use pattern matching:

date.split("/") match {
  case Array(a, b, c) => print(...)
  case _ => print("invalid format")
}

Or just access the array by index (not safe):

val arr = date.split("/")
val (a, b, c) = (arr(0), arr(1), arr(2))

Seth Tisue

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answered Mar 5, 2022 at 9:37

Gaël J

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Comments

Arnon Rotem-Gal-Oz · Accepted Answer · 2022-03-05 10:57:07Z

1

You can write

val Array(a,b,c) = date.split("/")

or

val Array(a,b,c) = date.split("/").take(3)

However, the pattern match as @Gaël J suggested has the advantage of graceful handling of cases where the result doesn't have the 3 parts expected

answered Mar 5, 2022 at 10:57

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ccheneson · Accepted Answer · 2022-03-07 09:38:12Z

0

You can pattern match directly on the date String (based on Gaël's answer)

val date = "12/01/2021"
date match {
  case s"$a/$b/$c" => print(a, b, c)
  case _ => print("invalid format")
}

answered Mar 7, 2022 at 9:38

ccheneson

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