#implicit-conversion

Solution: Where does Scala look for implicits? #fix #it #solution

Where does Scala look for implicits?

An implicit question to newcomers to Scala seems to be: where does the compiler look for implicits? I mean implicit because the question never seems to get fully formed, as if there weren’t words for it. :-) For example, where do the values for integral below come from?

scala> import scala.math._ import scala.math._ scala> def foo[T](t: T)(implicit integral:…

How to: Why can I pass 1 as a short, but not the int variable i?

Why can I pass 1 as a short, but not the int variable i?

Why does the first and second Write work but not the last? Is there a way I can allow all 3 of them and detect if it was 1, (int)1 or i passed in? And really why is one allowed but the last? The second being allowed but not the last really blows my mind.

Demo to show compile error

using System; class Program { public static void…

How to: Where does Scala look for implicits?

Where does Scala look for implicits?

An implicit question to newcomers to Scala seems to be: where does the compiler look for implicits? I mean implicit because the question never seems to get fully formed, as if there weren’t words for it. :-) For example, where do the values for integral below come from?

scala> import scala.math._ import scala.math._ scala> def foo[T](t: T)(implicit integral:…