mechanism for obtaining local variable names and values

[JeffBezanson]

It could be useful for debugging to be able to easily get the names and values of all variables in scope, e.g. so you don't have to manually write them all in a call to @show. This could be provided as a macro @locals (though needs to be implemented specially in lowering, since the set of variables in scope is not available during macro expansion), returning a dictionary, similar to locals() in python: https://docs.python.org/3/library/functions.html#locals

Thoughts?

[ararslan]

Is this different from varinfo()?

[JeffBezanson]

varinfo only applies to globals. For locals, it can't be implemented as a function, and you'd also probably rather get the values themselves rather than a table summarizing them. names and eval give you everything you need for globals.

[mattcbro]

This would be super useful. I see some code here but does it actually exist in any version of Julia? I can't seem to find it in Julia 1.0.3. @Locals is not defined in Base.

[KristofferC]

It exists in the downloadable release candidate for julia 1.1.0.