Get the enumerate type components from the string counterpart

General Usage
11

I also would like this kind of functionality for all my Enums, but I don’t like declaring constants for every enum.

I’ve arrived so far on the solution below. But I should probably write my own enum macro, similar to this discussion on enum dot access:

function get_instance(enum::DataType, str::String)
	idx = findfirst(x -> x==str, instance_names(enum))
	if idx == nothing
		throw(ArgumentError("invalid value for Enum $enum: $str"))
	else
		return enum(idx-1)
	end
end
instance_names(enum::DataType) = string.(instances(enum))

@enum Fruits begin
    apple
	pear
	banana
end
Fruits(str::String) = get_instance(Fruits, str)
Base.convert(::Type{Fruits}, str::String) = Fruits(str)

Now this works fine:

julia> Fruits("banana")
banana::Fruits = 2

julia> Fruits("monkey")
ERROR: ArgumentError: invalid value for Enum Fruits: monkey

I had to add the Base.convert since I am creating an enum instance from a constructor:

struct FruitBowl
   fruit::Fruits
end

julia> bowl = FruitBowl("banana")
julia> bowl.fruit
banana::Fruits = 2

I do not know why I could not dispatch on the Enum type though. typeof(Fruits) returned Datatype, not Enum.