how to find the implicit function or variables in scala

Question

I can\'t find the implicit conversions or implicit argument values being used in Scala code. This makes reading open source projects very confusing.

The implic

Answer 1

One trick that has been covered on SO:

scala> import reflect.runtime._,universe._
import reflect.runtime._
import universe._

scala> reify { "abc".size }
res1: reflect.runtime.universe.Expr[Int] = Expr[Int](Predef.augmentString("abc").size)

Recent REPL:

scala> 3 until 4 //print<hit tab completion>
   scala.Predef.intWrapper(3).until(4) // : scala.collection.immutable.Range

Answer 2

You can also use the Scala Plugin for IntelliJ IDEA. The implicit conversions are underlined like this (where Int 1 is converted to BigInt):

The above example is taken from https://www.jetbrains.com/help/idea/2016.1/working-with-scala-implicit-conversions.html?origin=old_help#highlight. You can read more on that page.