kalmar/GroupRings.jl
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reverse_dict function for fast basis element lookup

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kalmar 2017-05-16 18:46:30 +02:00
parent d13a8b27df
commit 70817a8fbc
1 changed files with 2 additions and 0 deletions
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src/GroupAlgebras.jl
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@ -191,6 +191,8 @@ function rationalize{T<:Integer, S<:Number}(::Type{T}, X::GroupRingElem{S};
return GroupRingElem(v, parent(X))
end
function reverse_dict(a::AbstractVector)
return Dict{eltype(a), Int}(x => i for (i,x) in enumerate(a))
end