Julia 0.5 Highlights(julialang.org)

    julia> xs = ["foo", "bar"]
    2-element Array{String,1}:
     "foo"
     "bar"

    julia> push!(xs, 42)
    ERROR: MethodError: Cannot `convert` an object of type Int64 to an object of type String
    This may have arisen from a call to the constructor String(...),
    since type constructors fall back to convert methods.
     in push!(::Array{String,1}, ::Int64) at ./array.jl:479
    
    julia> xs = Any["foo", "bar"]
    2-element Array{Any,1}:
     "foo"
     "bar"

    julia> push!(xs, 42)
    3-element Array{Any,1}:
       "foo"
       "bar"
     42