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Implement DoubleDicts #1126

Merged
merged 12 commits into from
Jul 24, 2020
7 changes: 6 additions & 1 deletion src/Utilities/CleverDicts.jl
Original file line number Diff line number Diff line change
Expand Up @@ -46,7 +46,7 @@ index_to_key(::Type{MyKey}, i::Int) = MyKey(i)
key_to_index(key::MyKey) = key.x
```
"""
mutable struct CleverDict{K, V}
mutable struct CleverDict{K, V} <: AbstractDict{K, V}
last_index::Int
vector::Union{Nothing, Vector{V}}
dict::Union{Nothing, OrderedCollections.OrderedDict{K, V}}
Expand Down Expand Up @@ -153,6 +153,7 @@ end
function Base.delete!(c::CleverDict{K, V}, key::K)::Nothing where {K, V}
if c.dict === nothing
c.dict = OrderedCollections.OrderedDict{K, Union{Nothing, V}}()
sizehint!(c.dict, length(c.vector))
for (i, info) in enumerate(c.vector)
c.dict[index_to_key(K, i)] = info
end
Expand Down Expand Up @@ -228,4 +229,8 @@ function Base.keys(c::CleverDict{K, V}) where {K, V}
return c.dict === nothing ? index_to_key.(K, 1:length(c)) : keys(c.dict)
end

function Base.sizehint!(c::CleverDict{K, V}, n) where {K, V}
return c.dict === nothing ? sizehint!(c.vector, n) : sizehint!(c.dict, n)
end

end
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