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Abstract class inheritance w/o type params -- a possible feature?
Thu, 2011-05-12, 07:37
Dear all,
as highly attractive as Scala appears for stepwise replacement for Java legacy code, classes with multiple non-substitutable constructors seem to be a hindrance.
Abstract class inheritance without type parameters appears to be a straightforward way to achieve this -- were there not the «overloaded method constructor ... cannot be applied to ()» messages.
Is there a principal hindrance to introducing a kind of abstract class that can inherit without type parameters?
Are there any arguments speaking against this?
Cheers, Nick
as highly attractive as Scala appears for stepwise replacement for Java legacy code, classes with multiple non-substitutable constructors seem to be a hindrance.
Abstract class inheritance without type parameters appears to be a straightforward way to achieve this -- were there not the «overloaded method constructor ... cannot be applied to ()» messages.
Is there a principal hindrance to introducing a kind of abstract class that can inherit without type parameters?
Are there any arguments speaking against this?
Cheers, Nick
Thu, 2011-05-12, 13:47
#2
Re: Abstract class inheritance w/o type params -- a possible fe
>>>>> "Nick" == Nick Rudnick writes:
Nick> Dear all, as highly attractive as Scala appears for stepwise
Nick> replacement for Java legacy code, classes with multiple
Nick> non-substitutable constructors seem to be a hindrance.
I used to angst about this sometimes, but then I found the following trick:
http://stackoverflow.com/questions/3299776/in-scala-how-can-i-subclass-a...
Sure, abstract classes may inherit (be inherited...) without type
parameters. Could you give an example for what you mean?