Why scala not allowing '$' identifier in case statement?
- by Alex R
this works as expected
scala 3 match { case x:Int = 2*x }
res1: Int = 6
why does this fail?
scala 3 match { case $x:Int = 2*$x }
:1: error: '=' expected but ':' found.
3 match { case $x:Int = 2*$x }
^
scala 3 match { case `$x`:Int = 2*$x }
:1: error: '=' expected but ':' found.
3 match { case `$x`:Int = 2*$x }
^
scala 3 match { case `$x` : Int = 2*$x }
:1: error: '=' expected but ':' found.
3 match { case `$x` : Int = 2*$x }
'$' is supposed to be a valid identifier character, as demonstrated here:
scala var y = 1
y: Int = 1
scala var $y = 2
$y: Int = 2
Thanks
