kalmar/Groups.jl
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add comment why specialized deepcopy for GWords is necessary

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kalmarek 2018-07-30 15:20:12 +02:00
parent 7f25d96038
commit d373a0c7c2
1 changed files with 1 additions and 0 deletions
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src/Groups.jl
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@ -98,6 +98,7 @@ function hash(W::GWord, h::UInt)
return xor(W.savedhash, h) return xor(W.savedhash, h)
end end
# WARNING: Due to specialised (constant) hash function of GWords this one is actually necessary!
function deepcopy_internal(W::T, dict::ObjectIdDict) where {T<:GWord} function deepcopy_internal(W::T, dict::ObjectIdDict) where {T<:GWord}
G = parent(W) G = parent(W)
return G(T(deepcopy(W.symbols))) return G(T(deepcopy(W.symbols)))