On Wed, Jan 29, 2003 at 04:40:21PM +0900, Gavin Sinclair wrote:
> Could this be made a solution to the block parameter scoping problem?
> (I don't remember any concrete decision on that.)  That is, make all

matz has already explained his plans on this [52440].
They might change, though.

> parameters local, and then use "export" to export the one(s) you want
> to be visible from outside?

To summarize:
 '=' refers to variables in the current method / class scope.
 ':=' refers to local vars
 block arguments are assigned with ':='
 in case of shadowing a warning is issued.

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