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implicit type information
Sun, 2009-01-04, 10:47
I've learned to use the Manifest type for getting parametrized type information, but I can't do the following:
class MyType {
val foo: String = "hello"
}
class MyService {
def bar[T](implicit m: scala.reflect.Manifest[T]): Unit = {
println(m.erasure)
}
}
class MyProvider[T] {
val s = new MyService
def foo(): Unit = {
s.bar[T]
}
}
object ParameterTypes {
def main(args: Array[String]): Unit = {
val p = new MyProvider[MyType]
p.foo
}
}
I realize the Manifest type is experimental, but this type of parametrization seem really useful. Any suggestions?
class MyType {
val foo: String = "hello"
}
class MyService {
def bar[T](implicit m: scala.reflect.Manifest[T]): Unit = {
println(m.erasure)
}
}
class MyProvider[T] {
val s = new MyService
def foo(): Unit = {
s.bar[T]
}
}
object ParameterTypes {
def main(args: Array[String]): Unit = {
val p = new MyProvider[MyType]
p.foo
}
}
I realize the Manifest type is experimental, but this type of parametrization seem really useful. Any suggestions?
val s = new MyService
def foo(): Unit = { s.bar[T] }}
class MyService {
def bar[T](implicit m: scala.reflect.Manifest[T]): Unit = { println(m.erasure) }}
Just make sure that you have a manifest before T gets erased.
On Sun, Jan 4, 2009 at 1:46 AM, Erick Fleming <efleming969@gmail.com> wrote:
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