How to get two dictionaries with the same ordering of the keys

New to Julia
1

Let’s say I have two dictionaries with the same keys but different values and different ordering:

D1 = Dict("B" => 10, "A" => 15, "C" => 17)
D2 = Dict("C" => 14, "B" => 11, "A" =>0)

I want to order dictionary D2 with the same key ordering as in dictionary D1. So I want to get:

D2= "B" => 11
    "A" => 0
    "C" => 14
2

The Dict type in Base is unordered. If you care about order of elements you should use some other data structures, for example like OrderedDict from OrderedCollections.jl.

3 Likes
3

Thank you for your relpy!
I had ordered D1 based on its values using:
D1= sort(unordered_D1; byvalue=true)
Are you saying even that ordering is not kept?

4

So the idea was to order D1 first based on its values and then order D2 based on D1 keys.

5

Yes, that’s not reliable, because Dict isn’t sorted, trying to later access the items you can get them in different order. Again, if order is really important you should use something else.

4 Likes
6

Another option is Dictionaries.jl

2 Likes