Created
January 5, 2014 13:16
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string interpolation with "creatively" named values
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| // intended for boilerplate.scala in shapeless... | |
| val arity = 3 | |
| val N = arity | |
| val typeVars = (0 until arity) map (n => (n+'A').toChar) | |
| // = Vector(A, B, C) | |
| val `A..Z` = typeVars.mkString(", ") | |
| // = "A, B, C" | |
| val `A::Z` = typeVars.mkString("", " :: ", " :: HNil") | |
| // = "A :: B :: C :: HNil" | |
| s"implicit def fnFromProduct${N}[${`A..Z`}]: Aux[(${`A::Z`}) => Res, (${`A..Z`}) => Res] = new FnFromProduct[(${`A::Z`}) => Res] {" | |
| // = implicit def fnFromProduct3[A, B, C]: Aux[(A :: B :: C :: HNil) => Res, (A, B, C) => Res] = new FnFromProduct[(A :: B :: C :: HNil) => Res] { | |
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