Optional arguments+splatting

[Christopher_Fisher]

@Philippe_Maincon1

struct T
    a
    b
end
f(;a=0,b=0) = T(a,b)
g(foo,s...) = foo(s...)
r=g(f,(a=2))

Building up DFN’s answer, I think you want the following:

struct T
  a
  b
end
f(;a=0, b=0) = T(a ,b)
g(foo, s) = foo(;s...)
r = g(f,(a=2,))

Note that (a=2,) requires a comma because there is only 1 element. Otherwise, the parentheses are omitted. Also, I removed the splatting on s in g