mauro3/Parameters.jl

@unpack stopped working

juliohm opened this issue · 1 comments

juliohm commented 
julia> using Parameters

julia> @with_kw struct Foo
         a
         b
         c
       end
Foo

julia> f = Foo(a=1,b=2,c=3)
Foo
  a: Int64 1
  b: Int64 2
  c: Int64 3


julia> a, b, c = @unpack f
ERROR: LoadError: type Symbol has no field head
Stacktrace:
 [1] getproperty(::Symbol, ::Symbol) at ./Base.jl:33
 [2] @unpack(::LineNumberNode, ::Module, ::Any) at /home/juliohm/.julia/packages/UnPack/EkESO/src/UnPack.jl:93
in expression starting at REPL[7]:1

Parameters.jl v0.12.1

mauro3 commented

You have to:

julia> @unpack a, b, c = f
Foo
  a: Int64 1
  b: Int64 2
  c: Int64 3

(also note that UnPack.jl is its own package, and that you can also unpack ordinary structs.)

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