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Basically, I would like to be able to build a custom extractor without having to store it in a variable prior to using it. This isn't a real example of how I would use it, it would more likely be used in the case of a regular expression or some other string pattern like construct, but hopefully it explains what I'm looking for: def someExtractorBuilder(arg:Boolean) = new { def unapply(s:String):Option[String] = if(arg) Some(s) else None } //I would like to be able to use something like this val {someExtractorBuilder(true)}(result) = "test" "test" match {case {someExtractorBuilder(true)}(result) => result } //instead I would have to do this: val customExtractor = someExtractorBuilder(true) val customExtractor(result) = "test" "test" match {case customExtractor(result) => result} When just doing a single custom extractor it doesn't make much difference, but if you were building a large list of extractors for a case statement, it could make things more difficult to read by separating all of the extractors from their usage. I expect that the answer is no you can't do this, but I thought I'd ask around first :D

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