kalmar/Groups.jl
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constructing NTuple is faster than deepcopying it?

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This commit is contained in:
kalmarek 2018-03-25 19:12:29 +02:00
parent 81b580a92b
commit c89ffbb4b4
1 changed files with 3 additions and 4 deletions
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7
src/AutGroup.jl
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@ -35,7 +35,6 @@ AutGroupElem = GWord{AutSymbol}
mutable struct AutGroup{N} <: AbstractFPGroup mutable struct AutGroup{N} <: AbstractFPGroup
objectGroup::FreeGroup objectGroup::FreeGroup
gens::Vector{AutSymbol} gens::Vector{AutSymbol}
domain::NTuple{N, FreeGroupElem}
end end
export AutGroupElem, AutGroup export AutGroupElem, AutGroup
@ -130,7 +129,7 @@ function perm_autsymbol(a::Vector{T}) where T<:Integer
return perm_autsymbol(G(Vector{Int8}(a))) return perm_autsymbol(G(Vector{Int8}(a)))
end end
domain(G::AutGroup) = deepcopy(G.domain) domain(G::AutGroup)= NTuple{length(G.objectGroup.gens), FreeGroupElem}(gens(G.objectGroup))
############################################################################### ###############################################################################
# #
@ -140,7 +139,7 @@ domain(G::AutGroup) = deepcopy(G.domain)
function AutGroup(G::FreeGroup; special=false) function AutGroup(G::FreeGroup; special=false)
n = length(gens(G)) n = length(gens(G))
n == 0 && return AutGroup(G, AutSymbol[], NTuple{n, FreeGroupElem}()) n == 0 && return AutGroup{n}(G, AutSymbol[])
S = AutSymbol[] S = AutSymbol[]
indexing = [[i,j] for i in 1:n for j in 1:n if i≠j] indexing = [[i,j] for i in 1:n for j in 1:n if i≠j]
@ -157,7 +156,7 @@ function AutGroup(G::FreeGroup; special=false)
append!(S, [flips; syms]) append!(S, [flips; syms])
end end
return AutGroup{n}(G, S, NTuple{n, FreeGroupElem}(G.(G.gens))) return AutGroup{n}(G, S)
end end
############################################################################### ###############################################################################