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Editorial Team
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Asked: 2026-06-14T17:57:59+00:00

I’d like to know which is the simplest and most elegant way to process

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I’d like to know which is the simplest and most elegant way to process a text file with email addresses in it and extract them using Scala.

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  1. Editorial Team

    Here is my own attempt at it:

    scala> import scala.io.Source.fromFile

scala> val r = """(?i)\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b""".r

scala> fromFile("./mails").getLines.flatMap { r.findAllIn _ }.toList
res29: List[String] = List(address@domain.com, anotheraddress@domain.com, address2@domain.com)

    Source for the RegEx.

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