CODEWITHSUNDEEP
stringscala
blue-sky
blue-sky

Reputation: 53896

Unable to split String using |

When I split a String using , works as expected : 

  val line1 = "this,is,a,test"                    //> line1  : String = this,is,a,test
  val sLine = line1.split(",")

however if I use | the String is split into its character elements and added to array : 

val line1 = "this|is|a|test"                    //> line1  : String = this|is|a|test
val sLine = line1.split("|")                    //> sLine  : Array[String] = Array("", t, h, i, s, |, i, s, |, a, |, t, e, s, t)

Why is this occurring because of | character ?

Upvotes: 5

Views: 147

Answers (3)

user1907906
user1907906

Reputation: 

scala>  val line1 = "this,is,a,test"
line1: java.lang.String = this,is,a,test

scala> line1.split(",")
res2: Array[java.lang.String] = Array(this, is, a, test)

scala> var line2 = "this|is|a|test"
line2: java.lang.String = this|is|a|test

scala> line2.split("\\|")
res3: Array[java.lang.String] = Array(this, is, a, test)

Upvotes: 1

Vorsprung
Vorsprung

Reputation: 34457

possible solutions

val sLine2 = line1.split('|')

because ' denotes a character, a single character, split does not treat it as a regexp

val sLine2 = line1.split("\\|")

to escape the special alternation | regexp character. This is why it isn't working. split is treating | as a zero width regexp and so the string is vapourized into its component characters

Upvotes: 4

cmbaxter
cmbaxter

Reputation: 35463

As pipe is a special regex character, I believe you need to escape it like so "\\|" in order for it to work

Upvotes: 3

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