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August 29, 2015 14:20
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Using unapply to match strings that are valid filenames with an extension
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| object FileExt { | |
| def unapply(s: String): Option[String] = { | |
| val parts: Array[String] = s.split('.') | |
| if(parts.length < 2) None | |
| else Some(parts.last) | |
| } | |
| } | |
| List("some/file.jpg", "file.txt", "none", "none.", "").map(s => s match { | |
| case FileExt(s) => s | |
| case _ => "" | |
| }) |
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