Array basics

New to Julia
13

You can also use InitialValues.jl together with BangBang.jl

using InitialValues
using BangBang

g(x) = x*x

function f(x)
    res = InitialValue(push!!)
    for el in x
        res = push!!(res, g(el))
    end

    return res
end

with the following result

julia> x1 = [1, 2, 3]
3-element Vector{Int64}:
 1
 2
 3

julia> f(x1)
3-element Vector{Int64}:
 1
 4
 9

julia> x2 = ["a", "b", "c"]
3-element Vector{String}:
 "a"
 "b"
 "c"

julia> f(x2)
3-element Vector{String}:
 "aa"
 "bb"
 "cc"

Be warned though, that the usage of push!! adds small overhead which may be or may be not crucial for you.