I have a namedtuple data = (;a=1,b=2,c=3) and a function f that takes kwargs ;a,b. I want to call f with f(;a,b) f(;a,b) = a+b data = (;a=1,b=2,c=3) (;a,b) = data f(;a,b) But there I have to specify a and b twice: once in the unpacking and once at the call site. Is it possible to specify them only…

This should work: f(; data[(:a, :b)]...).

Concise unpacking syntax

jzr January 3, 2022, 10:10pm 3

That requires changing the function, which isn’t what I want.

julia> f(;((;a,b) = data)...)
ERROR: MethodError: no method matching f(; a=1, b=2, c=3)

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