Upstream BiDictMap to DataStructures.jl?

[dehann]

This is most useful when trying to make LightGraphs SimpleGraph using Symbol labels, so perhaps BiDictMap should be a feature of their upstream DataStructures.jl so that we can just use downstream in more than one repo?

(i.e. move the whole file over)

https://github.com/JuliaRobotics/DistributedFactorGraphs.jl/blob/b2ae67eb1677af6881205a46a14ec014196a7d19/src/LightDFG/FactorGraphs/BiMaps.jl#L2

[Affie]

Way back when I wrote this there wasn't another solution, this was basically what i found: https://discourse.julialang.org/t/invertable-dict-structure/7225

With a quick search it looks like there might be some options available now (I haven't actually looked in detail at one of them): https://discourse.julialang.org/t/datastructure-for-two-way-map/52735 https://github.com/scheinerman/Bijections.jl https://github.com/rikhuijzer/BidirectionalMaps.jl https://github.com/JuliaData/CategoricalArrays.jl

[dehann]

Since you wrote Johan (don't want to steal your thunder), perhaps good to just make it known on those threads ... perhaps even better to just do a PR with test to DataStructures.jl and then also xref with each of the threads you point out. Someone should just start a BiMap and then the world will start hacking at it. I looked at DataStructures.jl the other day and did not see a BiMap/BiDict hence this issue. Would you be up for something like that?