avi at beta4.com
Fri Jan 30 20:25:03 UTC 2004
On Jan 30, 2004, at 12:06 PM, David Farber wrote:
> What is implict-context-receiver syntax?
If no receiver is specified, it's assumed to be thisContext.
Self uses this in two ways that I know of:
- instead of assignment, temps are set through accessors on the current
which is equivalent to
thisContext x: 2
Squeak probably can't emulate that because having a separate
MethodContext class for each possible combination of args and temps
would be a little much.
- return isn't special syntax, but is a binary method on MethodContext,
^ (bar + 1)
is equivalent to
thisContext ^ (bar + 1)
Squeak could certainly do that, we already have MethodContext>>return:.
But I'm not at all sure we'd want to.
Note that those parens are required in Self, because of precedence.
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