On Tue, Sep 27, 2016 at 7:47 AM, Marius Millea <mariusmil...@gmail.com> wrote:
>> Macros are functions evaluated at parse-time. The runtime scope doesn't
>> even exist when the macro is called.
>
>
> That's right, the answer may well have nothing to do with marcos (maybe I
> obscured the question by even mentioning them in an attempt to give bigger
> context to what I'm trying to accomplish).
No.
>
> I guess it really boils to just "is there a way to eval something in the
> current scope". Not knowing much about the internals of all of this, given
> that "eval" does exactly that in the global scope, I guess it wouldn't seem
> like such a stretch that something exists for the current scope. For
> example, in Python it exists,
>
> In [1]: def f(x):
> ...: return eval("x+1")
>
>
> In [2]: f(3)
> Out[2]: 4
>
>
>
> But perhaps the JIT requirements make it impossible in Julia?
It's not the JIT requirement, rather the performance trade off
>
> julia> function f(x)
> eval(:(x+1))
> end
> f (generic function with 1 method)
>
>
> julia> f(3)
> ERROR: UndefVarError: x not defined
> in eval(::Module, ::Any) at ./boot.jl:234
> in f(::Int64) at ./REPL[1]:2
>
>
>
