Efficient way to define new variables by iterating a dictionary (Julia)

Question

Consider a dictionary d in Julia which contains a thousand of keys. Each key is a symbol and each value is an array. I can access to the value associated with the symbol :S1 and assign it to the variable k1 via

k1 = d[:S1]

Now assume I want to define the new variables k2, k3, k4, ..., k10 by repeating the same procedure for the special keys :S1 ... :S10 (not for all the keys in the dictionary). What is the most efficient way to do it? I have the impression this can be solved using metaprogramming but not sure about that.

Answer 1

The easy way is to use Parameters.jl.

using Parameters
d = Dict{Symbol,Any}(:a=>5.0,:b=>2,:c=>"Hi!")
@unpack a, c = d
a == 5.0 #true
c == "Hi!" #true

BTW, this doesn't use eval.