"再帰ではこんな感じか。 def search[T]( l:List[T],v:T ):Int = l match { case Nil => -1; case `v` ::xs => xs.length;case x::xs => search( xs , v) }"

@yuroyoro

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@yuroyoro's (ゆろよろ(オザキトモヒト)) tweet from about 1 month ago...

再帰ではこんな感じか。 def search[T]( l:List[T],v:T ):Int = l match { case Nil => -1; case `v` ::xs => xs.length;case x::xs => search( xs , v) }

@yuroyoro

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