Julia’s creators say they are greedy - so am I. I want to create a function g that accepts a list of arguments (I am trying with a named tuple), and passes it on to a function f. I have 3 requirements
- The user of g must provide “named arguments” as in “a=3”, for readability of the code calling g
- Arguments must be optional, with fallback on a default value
- and here comes the crunch: g must not be concerned with the details of this argument list.
Why would I ever want to do that? Well, in the real world, g does a bit of work behind the scenes.
I try
struct T
a
b
end
f(;a=0,b=0) = T(a,b)
g(foo,s...) = foo(s...)
r=g(f,(a=2))
but splatting was clearly not intended for named tuples. Any ideas that do not involve metaprogramming? 
I am knocking off for the day, but I am wondering if g could become a macro… metaprogramming-light.
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