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scalaregexp-replace

How to access the replaceAllIn() counter?

I am using 

val str2 = regex.replaceAllIn(str1, "other")

and need to count the number of replaces... There are a way retrieve the value of the internal replaceAllIn counter?

PS: this is usual in other languages (example), so I am supposing that Scala offer similar thing.

Solution 
  • scala> val r = "x".r
r: scala.util.matching.Regex = x

scala> var i = 0
i: Int = 0

scala> r.replaceAllIn("xooxxox", m => { i += 1 ; "X" })
res0: String = XooXXoX

scala> i
res1: Int = 4

    will do appendReplacement under the hood.