Enums are not indexable with integers anymore with Julia 0.7

[s-celles]

Hello,

I noticed that enums are not indexable anymore with Julia 0.7.

Julia 0.6

               _
   _       _ _(_)_     |  A fresh approach to technical computing
  (_)     | (_) (_)    |  Documentation: https://docs.julialang.org
   _ _   _| |_  __ _   |  Type "?help" for help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 0.6.4 (2018-07-09 19:09 UTC)
 _/ |\__'_|_|_|\__'_|  |  Official http://julialang.org/ release
|__/                   |  x86_64-apple-darwin14.5.0

julia> @enum Fruit apple orange kiwi

julia> Fruit
Enum Fruit:
apple = 0
orange = 1
kiwi = 2

julia> Fruit[2]
1-element Array{Fruit,1}:
 kiwi

julia> Fruit[2][1]
kiwi::Fruit = 2

Julia 0.7

               _
   _       _ _(_)_     |  A fresh approach to technical computing
  (_)     | (_) (_)    |  Documentation: https://docs.julialang.org
   _ _   _| |_  __ _   |  Type "?" for help, "]?" for Pkg help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 0.7.0 (2018-08-08 06:46 UTC)
 _/ |\__'_|_|_|\__'_|  |  Official http://julialang.org/ release
|__/                   |  x86_64-apple-darwin14.5.0

julia> @enum Fruit apple orange kiwi

julia> Fruit
Enum Fruit:
apple = 0
orange = 1
kiwi = 2

julia> Fruit[2]
ERROR: MethodError: Cannot `convert` an object of type Int64 to an object of type Fruit
Closest candidates are:
  convert(::Type{T}, ::T) where T at essentials.jl:154
  Fruit(::Integer) at Enums.jl:131
Stacktrace:
 [1] setindex!(::Array{Fruit,1}, ::Int64, ::Int64) at ./array.jl:769
 [2] getindex(::Type{Fruit}, ::Int64) at ./array.jl:366
 [3] top-level scope at none:0

Is there any workaround? because I need to get key from value like it was previously possible.

Kind regards

[yuyichao]

Fruit[2][1]

That was a overly complicated way to spell Fruit(2).

[s-celles]

Thanks @yuyichao

[s-celles]

I have just created a PR to improve docstring of enum #28769

Something else is missing in the doc...
How can we get the underlying type of an enum ?

julia> @enum Fruit apple=1 orange=2 kiwi=3

julia> typeof(Int(apple))
Int64

julia> typeof(Integer(apple))
Int32

This is probably obvious for you... but not for me...
and it could help JuliaIO/LibSerialPort.jl#19