Functional Syntax?

Language Design
38

Don’t laugh but I’m wondering why print-tab says

scala> - -42 //print
-.`unary_-` // : <error>

So what I’d like in REPL is a mode to show me the parse tree or expression tree with values, similar to expecty power asserts.

Someone was just asking about mixing operators such as this artificial example:

scala> 42 $plus 1 == 43
          ^
       error: overloaded method + with alternatives:
         (x: Double)Double <and>
         (x: Float)Float <and>
         (x: Long)Long <and>
         (x: Int)Int <and>
         (x: Char)Int <and>
         (x: Short)Int <and>
         (x: Byte)Int <and>
         (x: String)String
        cannot be applied to (Boolean)

but the OP op was an ordinary method name.

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