tulz-app / tuplez   0.4.0

// tupleN + scalar, scalar + tupleN, tupleN + tupleM, up to Tuple22
"app.tulz" %%% "tuplez-full" % "0.4.0"

// or

// tupleN + scalar, scalar + tupleN, tupleN + tupleM, up to Tuple10
"app.tulz" %%% "tuplez-full-light" % "0.4.0"

// or

// tupleN + scalar, up to Tuple22
"app.tulz" %%% "tuplez-basic" % "0.4.0"

// or

// tupleN + scalar, up to Tuple10 
"app.tulz" %%% "tuplez-basic-light" % "0.4.0" 

// utilities to build API's that allow using a FunctionN[A, B, C, ... Out] instead of Function1[TupleN[A, B, C, ...], Out] 
"app.tulz" %%% "tuplez-apply" % "0.4.0"

abstract class Composition[L, R] {
  type Composed
  val compose: (L, R) => Composed
  def decompose(c: Composed): (L, R)
}

object TupleComposition {

  def compose[L, R](l: L, r: R)(implicit composition: Composition[L, R]): composition.Composed = composition.compose(l, r)
  def decompose[L, R, C](c: C)(implicit composition: Composition.Aux[L, R, C]): (L, R)         = composition.decompose(c)

}

import app.tulz.tuplez.TupleComposition

TupleComposition.compose( Tuple1(1), Tuple1(2) ) // (1, 2)
TupleComposition.compose( 1, 2 ) // (1, 2)
TupleComposition.compose( (1, 2, 3, 4), (5, 6) ) // (1, 2, 3, 4, 5, 6)
TupleComposition.compose( (1, 2, 3), 4 ) // (1, 2, 3, 4)
TupleComposition.compose( 1,  (2, 3, 4) ) // (1, 2, 3, 4)
TupleComposition.compose( (1, 2, 3), Tuple1(4) ) // (1, 2, 3, 4)
TupleComposition.compose( Tuple1(1),  (2, 3, 4) ) // (1, 2, 3, 4)
TupleComposition.compose( (1, 2, 3), () ) // (1, 2, 3)
TupleComposition.compose( (),  (1, 2, 3) ) // (1, 2, 3)
// etc

import app.tulz.tuplez._

object instances extends ApplyConverters[String] 
// in order to make type and implicits resolution possible, the apply converters are generated for a fixed output type
import instances._

val acceptingTupledFunc: ((Int, Int, Int, Int) => String) => String = func => func((1, 2, 3, 4))
val nonTupledFunction = (x1: Int, x2: Int, x3: Int, x4: Int) => s"I return [${x1}, ${x2}, ${x3}, ${x4}]"
assert(acceptingTupledFunc(toTupled4(nonTupledFunction)) == "I return [1, 2, 3, 4]")

import app.tulz.tuplez._

case class MyStructure[T](
  data: T
) {

  def appendScalar[U](value: U)(implicit composition: Composition[T, U]): MyStructure[composition.Composed] = 
    copy(data = composition.compose(data, value)) 
 // or 
 // copy(data = TupleComposition.compose(data, value))

}