带尖括号（<>）的方法 [英] method with angle brackets (<>)

问题描述

在方法名称中是否可以有尖括号，例如：

Is it possible to have angle brackets in method names , e.g. :

class Foo(ind1:Int,ind2:Int){...}
var v = new Foo(1,2)
v(1) = 3 //updates ind1
v<1> = 4 //updates ind2

实际情况显然比这复杂得多！提供方便的用户界面。

The real situation is obviously more complicated than this!!I am trying to provide a convenient user interface.

推荐答案

此响应并不意味着太严重，而只是证明可以使用一些hack几乎实现。

This response is not meant too serious and is just a proof that this can almost be achieved using some hacks.

class Vector(values: Int*) {
  val data = values.toArray
  def < (i:Int) = new {
    def `>_=`(x: Int) {
      data(i) = x
    }
    def > {
      println("value at "+ i +" is "+ data(i))
    }
  }
  override def toString = data.mkString("<", ", ", ">")
}

val v = new Vector(1, 2, 3)
println(v) // prints <1, 2, 3>
v<1> = 10
println(v) // prints <1, 10, 3>
v<1> // prints: value at 1 is 10

使用此类，我们可以得到一个使用<$的向量c $ c><> 代替（）的读和写访问权限。
如果> 返回值，则编译器（2.9.0.1）崩溃。可能是错误，也可能是由于误用了> 。

Using this class we can have a vector that uses <> instead of () for "read" and write access. The compiler (2.9.0.1) crashes if > returns a value. It might be a bug or a result of misusing >.

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