AMDG Joel de Guzman wrote:
Yep. Phoenix can do that. A local variable may hide an outer local variable. Here, we just reuse the locals for arguments to the lambda as well. So, in current terms, this:
lambda( _x, _y )[ _x + _y ]
is just this:
lambda( _x = _1, _y = _2 )[ _x + _y ]
Am I misunderstanding something? I thought that this would give lambda( _x = _1, _y = _2 )[ _x + _y ] (1, 2)() == 3 instead of lambda( _x = _1, _y = _2 )[ _x + _y ] ()(1, 2) == 3
Very cool suggestion, Peter!
I don't think it is quite the same if you use an arbitrary expression instead of _x + _y. For instance, what should this mean: lambda(_x, _y) [ _x + _y + _1 ] I'm inclined to think that _1, &c. should be reserved for the top level placeholders. This allows each placeholder to have a unique meaning in the full lambda expression, rather than having different placeholders refer to the same object and having the same placeholder refer to multiple objects. lambda(_o = _1) [ let(_x = _1, _y = _2) [ _x + _y + _o ] ] In Christ, Steven Watanabe