Question

我正在尝试编写以下内容：

val value: Int = 3
val tpe = typeOf(value)    // This is pseudocode. What should
                           // actually go on this line?
q"""
type U = $tpe
val v: U = $value
"""

基本上，我需要捕获value中Int（tpe）的类型并将其分配给U。如何做到这一点？

Answer 1

尝试

import scala.reflect.runtime.universe._
def getType[A: TypeTag](a: A): Type = typeOf[A]

val value: Int = 3
val tpe = getType(value) // Int

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