kalmar/Groups.jl
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Never override hash(::T) -- always hash(::T, ::UInt)

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kalmar 2017-01-25 15:40:50 +01:00
parent 7d5973b11c
commit de4d91a56a
1 changed files with 4 additions and 1 deletions
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5
src/Groups.jl
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@ -96,7 +96,10 @@ end
freegroup_reduce(W::GWord) = freegroup_reduce!(deepcopy(W))
hash{T}(W::GWord{T}) = (W.modified && freegroup_reduce!(W); W.savedhash)
function hash{T}(W::GWord{T}, h::UInt)
W.modified && freegroup_reduce!(W)
return W.savedhash) + h
end
function (==){T}(W::GWord{T}, Z::GWord{T})
W.modified && freegroup_reduce!(W) # reduce clears the flag and recalculate the hash